MYERS Illuminator System CIII Series User manual

114201I - System Installation Manual
Illuminator™System
Series CIII
16.7 kW (2hr Run) – 50 kW
Installation Guide
44 South Commerce Way, Bethlehem, PA 18017
1-800-526-5088 •[phone] •Fax: [phone]
Service: [phone]
www.myerseps.com

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This unit contains LETHAL VOLTAGES. All repairs and service should be performed by
AUTHORIZED SERVICE PERSONNEL ONLY! There is NO USER SERVICEABLE PARTS
inside this unit.
IMPORTANT SAFEGUARDS
When using electrical equipment, you should always follow basic safety
precautions, including the following:
1. READ AND FOLLOW ALL SAFETY
INSTRUCTIONS.
2. Do not install the system outdoors.
3. Do not install near gas or electric heaters or in other high-temperature
locations.
4. Use caution when servicing batteries. Depending on battery type, batteries
contain either acid or alkali and can cause burns to skin and eyes. If
battery fluid is spilled on skin or in the eyes, flush with fresh water and
contact a physician immediately.
5. Equipment should be mounted in locations where unauthorized personnel
will not readily subject it to tampering.
6. The use of accessory equipment not recommended by Manufacturer may
cause an unsafe condition and void the warranty.
7. Do not use this equipment for other than its intended use.
8. Qualified service personnel must perform all servicing of this equipment.
SAVE THESE INSTRUCTIONS
The installation and use of this product must comply with all national, federal,
state, municipal, or local codes that apply. If you need help, please call
Service.

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C A U T I O N
READ ENTIRE MANUAL AND REVIEW ALL DOCUMENTATION BEFORE ATTEMPTING SYSTEM
INSTALLATION!
FOR SERVICE OR INSTALLATION INFORMATION:
TELEPHONE: [phone] (24 HR. HOTLINE)
FAX: [phone]
FOR YOUR PROTECTION....
PLEASE COMPLETE AND RETURN WARRANTY REGISTRATION CARD IMMEDIATELY.

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C H A P T E R 1
SAFETY WARNINGS
Read the following precautions before you install the UPS.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS. This manual contains important instructions that you should
follow during installation and maintenance of the system and batteries. Please read all instructions
before operating the equipment and save this manual for future reference.
DANGER
This system contains LETHAL VOLTAGES. AUTHORIZED SERVICE PERSONNEL should
perform all repairs and service ONLY. There is NO USER SERVICEABLE PARTS inside the
UPS.
WARNING
•Do not install the system outdoors.
•Do not install near gas or electric heaters or in other high-temperature locations.
•Use caution when servicing batteries. Battery acid can cause burns to skin and eyes. If acid is
spilled on skin or in the eyes, flush with fresh water and contact a physician immediately.
•Equipment should be mounted in locations where it is not readily subjected to tampering by
unauthorized personnel.
•The use of accessory equipment not recommended by the manufacturer may cause an unsafe
condition.
•Do not use this equipment for other than intended use.
•Only qualified service personnel (such as a licensed electrician) should perform the system and
battery installation and initial startup. Risk of electrical shock.

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C H A P T E R 2
INTRODUCTION
Please read this manual thoroughly before operating your safety system. Keep this manual and
the system User’s Guide in the folder mounted inside the unit’s door.
WARNING
Only qualified service personnel (such as a licensed electrician) should perform the system
and battery installation and initial startup. Risk of electrical shock exists.
Please record your unit’s part number, serial number, and model number below. You can find
these numbers on the labels on the inside of the system’s right door.
Part Number __________________________
Serial Number __________________________
Model Number __________________________

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C H A P T E R 3
BEFORE INSTALLING THE UNIT
Installation Dimensions and Clearances
Figure 3.0 System Dimensions
Table 3.1 Dimensions
Unit Height
(A) Width (B) Depth (C) (D) (E) (F) (G) (H)
Electronics
Cabinet 72” (183.0 cm) 44” (112.0 cm) 31” (79.0 cm) 27.75” (70.48 cm)
24.25”
(62.6 cm) 19.5” (49.53 cm) 6.75” (17.15 cm) 9.5” (24.13 cm)
Table 3.1 Dimensions
Unit (J) (K) (L) (M) (N) (P) (R)
Electronics
Cabinet 22.65” (57.53 cm) 7” (17.78 cm) 1.15” (2.92 cm) 8.5” (21.59 cm) 6.75” (17.15 cm) 1.8” (4.57 cm) 5.5” (13.97 cm)
Table 3.2 Required Clearances Table 3.3 Conduit Knockouts
Sides Top Front All
0”
(0.0 cm) 12” (30.5 cm) 39” (100.0 cm) 1 ¾” / 2” (4.45 cm / 5.09 cm)

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Location Guidelines
Keep the following guidelines in mind when choosing the location for your system and batteries:
•Verify that the environment meets the requirements in “Storage and Operating Environment” on
page 7. The environment can affect the reliability and performance of both the unit and the
batteries.
•Install any separate battery cabinets as close as possible to the unit to reduce the cost of DC
wiring and to improve battery performance. We recommend no clearance between the unit and
the battery cabinet; in other words, the battery cabinet should be next to (against) the right side of
the unit (when you face the front of the unit). If you must place the battery cabinet away from the
unit, you must supply the proper length, gauge, and type of battery cables, and you must make
sure the installation meets the applicable NEC or (CEC) requirements.
•Choose a permanent location for the unit and any battery cabinets. Attempting to move them after
you have installed the batteries can damage the batteries and the cabinet.
CAUTION
Do not move the unit or the battery cabinet after you install the batteries. If you do, the unit or
battery cabinet and batteries may be damaged.
CEC requires the unit to be located in a service room. If the room is equipped with a sprinkler
system, the unit must be provided with sprinkler proof covers.
This equipment is heavy. Refer to Table 3.4 when you choose a site to make sure that the floor
can support the weight of the system, the batteries, any separate battery cabinets, and any other
necessary equipment.
Table 3.4 System Weight [in lbs. (kg)]
Receiving and Moving the Unit and the Batteries
Systems weigh several hundred pounds; separate battery cabinets are also heavy (see Table 3.4;
ask your sales representative for additional information). Make sure you are prepared for these
weights before you unload or move the unit or the batteries. Do not install any batteries until you have
permanently installed the unit and any battery cabinets and connected all conduit and wiring.
90-Minute System Models 120-Minute System Models
24kw 33kw 40kw 50kw 16.7kw 24kw 33kw 40kw
Inverter 1250
(567) 1250
(567) 1450 (658) 1460 (663) 1250 (567) 1250 (567) 1450 (658) 1460 (663)
Battery Cabinet(s)
with Standard SLC
Batteries
5140
(2332) 7380
(3348) 8700 (3947) 10520 (4772) 5140 (2332) 7380 (3348) 8700 (3947) 10520 (4772)
Battery Cabinet(s)
without Batteries 700 (318) 1300
(590) 1300 (590) 1400 (636) 700 (318) 1300 (590) 1300 (590) 1400 (636)

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Storage and Operating Environment
Make sure you store and install the system in a clean, cool, dry place with normal ventilation for
human habitation and level floors.
Storage Temperature
Store the batteries (in the system or battery cabinet) at -18 to 40°C (0 to 104°F). Batteries have a
longer shelf life if they are stored below 25°C (77°F). Keep stored batteries fully charged. Recharge
the batteries every 90–120 days. The system or battery cabinet without batteries may be stored at -
20 to 70°C (-4 to 158°F).
Ventilation
The air around the unit must be clean, dust-free, and free of corrosive chemicals or other
contaminants. Do not place the system or batteries in a sealed room or container.
Operating Temperature
System can operate from 20° to 30°C (68° to 86°F) and up to 95% relative humidity. The batteries’
service life is longer if the operating temperature stays below 25°C (77°F).
Batteries
The temperature should be near 25°C (77°F) for optimum battery performance. Batteries are less
efficient at temperatures below 18°C (65°F), and high temperatures reduce battery life. Typically, at
about 35°C (95°F), battery life is half of what it would be at a normal temperature of 25°C (77°F). At
about 45°C (113°F), battery life is one-fourth of normal.
Make sure that heaters, sunlight, air conditioners, or outside air vents are not directed toward the
batteries. These conditions can make the temperature within battery strings vary, which can cause
differences in the batteries’ voltages. Eventually, these conditions affect battery performance.
If the batteries are not in the system, remember that the batteries should be installed as close as
possible to the unit to reduce DC wiring costs and improve battery performance.
Do not allow tobacco smoking, sparks, or flames in the system location because hydrogen is
concentrated under the vent cap of each cell of the battery. Hydrogen is highly explosive, and it is
hard to detect because it is colorless, odorless, and lighter than air.
Every type of battery can produce hydrogen gas, even sealed maintenance-free batteries. The gas is
vented through the vent caps and into the air, mainly when the unit is charging the batteries. The
batteries produce the most hydrogen when maximum voltage is present in fully charged batteries; the
batteries do not produce hydrogen during float charging. The amount of current that the charger
supplies to the batteries (not the battery ampere-hour) determines how much hydrogen is produced.
High Altitude Operation
The maximum operating ambient temperature drops 1°C per 300m (2°F per 1000 ft) above sea level.
Maximum elevation is 3000m (10,000 ft).

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C H A P T E R 4
INSTALLATION OVERVIEW
Figure 4.0 shows typical installations of system
Figure 4.0 Typical Hardwired Installation
Inverter
Cabinet
44” Wide
Battery
Cabinets
48” Wide
AC Input &
AC Output

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C H A P T E R 5
ACINPUT &ACOUTPUT INSTALLATION
WARNING
Only qualified service personnel (such as a licensed electrician) should perform the AC
installation. Risk of electrical shock exists.
Read the following cautions before you continue.
CAUTION
•Unit contains hazardous AC and DC voltages. Because of these voltages, a qualified
electrician must install the system, AC line service, and batteries. The electrician must
install the AC line service according to local and national codes and must be familiar
with batteries and battery installation.
•Before you install, maintain, or service the unit, always remove or shut off all sources of
AC and DC power and shut off the system. You must disconnect AC line input at the
service panel and turn off the Installation Switch (S1), the Main AC Input Circuit
Breaker (CB1), and the Battery Fuse(s) to make sure the unit does not supply output
voltage.
•Whenever AC and/or DC voltage is applied, there is AC voltage inside the unit; this is
because the unit can supply power from AC line or from its batteries. To avoid
equipment damage or personal injury, always assume that there may be voltage inside
the unit.
•Remove rings, watches, and other jewelry before installing the AC wiring. Always wear
protective clothing and eye protection and use insulated tools when working near
batteries. Whenever you are servicing an energized unit with the inside panel open,
electric shock is possible; follow all local safety codes. TEST BEFORE TOUCHING!
•To reduce the risk of fire or electric shock, install the unit and its batteries in a
temperature- and humidity-controlled indoor area free of conductive contaminants. See
page 8 for operating environment specifications.
1. Open the unit’s doors. Make sure the installation switch and the input circuit breaker are off, and
the battery fuse removed inside the unit.
2. Look at the ID label on the inside right door. Write down the following information:
Input Voltage: ___________
Output Voltage: ___________
3. Now, make sure the input and output voltages are what you need.
The Input must be a 4 wire three phases – Neutral must be connected.
Does the input voltage available for the system at the AC service panel match the input voltage
shown on the unit’s ID label?

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Service Panel Voltage = _____________ Input Voltage ___Yes /___No
•Does the output voltage on the ID label match the voltage your loads (protected equipment)
need?
Load Voltage = ______________ Output Voltage ___Yes/___No
If you answered NO to either of the preceding questions, call SERVICE.
4. Now, use the information you wrote down in Step 2 to find the correct circuit breaker for the
service panel that is for your system.
Table 5.1 Recommended Circuit Breaker for Maximum Input Current
System Input Voltage (Vac) Max. Current Recommended
Circuit Breaker
16.7 KW 120 / 208 58 70
16.7 KW 277 / 480 25 35
24 KW 120 / 208 84 100
24 KW 277 / 480 36 45
33 KW 120 / 208 115 150
33 KW 277 / 480 50 60
40 KW 120 / 208 139 175
40 KW 277 / 480 60 80
50 KW 120 / 208 174 225
50 KW 277 / 480 75 90
** WARNING: THE EXTERNAL INPUT CIRCUIT BREAKER PROTECTING THE SYSTEM MUST
BE A “MOTOR START”, DELAYED TRIP TYPE. THIS IS DUE TO MAGNETIC INRUSH
CURRENT DRAWN DURING APPLICATION OF AC POWER. PLEASE NOTE THAT
THIS APPLIES TO ANY UNIT THAT HAS A DIFFERENCE BETWEEN THE INPUT AND
THE OUTPUT VOLTAGES.
5. Write down the circuit breaker value that applies to your system from Table 5.1:
6. Now, look at Table 5.2 below, and use the notes below to find the proper gauge wire or the
recommended circuit breaker recorded in step 5.
Table 5.2 Recommended Minimum Wire Sizes
Read These Important Notes! For this Input
Circuit Breaker
Size...
Use this Size 90°C
Copper Wire
This table lists the AWG and mm2 wire size for each circuit breaker size.
The minimum recommended circuit breaker sizes for each model and
voltage application are listed in Table 5.1. The temperature rating of
conductor must not be less than 90° C wire. Based on the ampacities
given in Tables 310-16 of the National Electrical Code, ANSI/NFPA 70-
1993 (Table 2 of the CEC), and NEC article 220 (CEC Section 4). Circuit
conductors, must be the same size (ampacity) wires and equipment-
grounding conductors must meet Table 250-95 of the National Electrical
Code. Code may require a larger wire size than shown in this table
because of temperature, number of conductors in the conduit, or long
service runs. Follow local code requirements.
AWG mm2
10, 15, 20 12 3.31
25, 30 10 5.26
35, 40, 45 8 8.36
50, 60 6 13.30
70, 80 4 21.15
90, 100 2 33.62
110 1 42.11
125 1/0 53.49
150, 175 3/0 67.43
225 4/0 74.40

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7. The input circuit breaker in the input service panel provides the means for disconnecting AC
to the unit. Only authorized persons shall be able to disconnect AC to the unit [see NEC 700-20
and 700-21(CEC Section 46)]. If you are using the input circuit breaker to disconnect AC, you
must make sure that only authorized persons have control of the circuit breaker panel to meet
the requirements of NEC 700-20 (CEC Section 46).
8. Read the following caution before removing conduit knockouts.
CAUTION
To prevent electrical shock or damage to your equipment, the Installation Switch (S1), the Main
AC Input Circuit Breaker (CB1), and the circuit breaker at the input service panel should all be
turned off. The Main DC Battery Fuse and the external DC Disconnect Fuse(s) (if you have
one) should be removed.
9. Remove knockouts for AC Input and AC Output in the top or left side of the system. AC input
conductors and AC output conductors must be installed in separate conduits, and emergency
and non-emergency output circuits must be installed in separate conduits.
CAUTION
Do not drill the cabinet; drill filings may damage the unit and keep it from operating. If you
need larger knockouts, use a chassis punch to punch out the appropriate knockout. Do not
create additional knockouts.
10. Install the conduit. You must run the AC input service conductors and AC output conductors
through separate conduits. Emergency output conductors and non-emergency output conductors
must also be run through separate conduits. Emergency output circuits shall be installed in
dedicated conduit systems and not shared with other electrical circuits as described in NEC 700-
9(b) [CEC Section 47-108].
The next step explains where to make the AC connections to the system.
INSTALLING AC INPUT WIRES:
11. Connect AC utility from the service panel to the system’s terminal block labeled “INPUT”.
Phasing must be clockwise Rotation – i.e. Phase B lags Phase A.
Connect each Line (hot) wire to each of the input block positions marked “Line”, connect the
Neutral (common) wire to the input block marked “Neutral” and the ground wire to the
compression lug next to the input terminal block.
INSTALLING AC OUTPUT WIRES:
**IF EXTERNAL MAINTENANCE BYPASS IS REQUIRED, SEE DEVIATION DRAWING FOR
WIRING OF LOAD OUTPUT.
12. Connecting load wires without system distribution circuit breakers – connect load wires to the
system’s terminal block labeled “OUTPUT”. Repeat as in step 11.
13. Connecting load wires with distribution circuit breakers – connect load wires directly to the
circuit breakers and the neutral wires to the neutral bar.

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Figure 5.0 AC Input and Output Locations

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C H A P T E R 6
INSTALLING BATTERIES AND DCWIRING
WARNING
Only qualified service personnel (such as a licensed electrician) should perform the
battery and DC wiring installation. Risk of electrical shock exists.
This section explains how to install system batteries, fuses, and cables. An electrician who is
familiar with battery installations and applicable building and electrical codes should install
the batteries.
WARNING
The batteries that will need to be installed in this system could cause you harm or severely
damage the electronics if proper precautions are not followed. Batteries connected in series
parallel configuration could produce lethal voltages with unlimited current. All batteries
should be inspected for damage prior to installation. Never install a battery that is leaking
electrolyte. Battery terminals should be cleaned with a wire brush to remove any oxidation.
All tools should be insulated. Rubber gloves and safety glasses are recommended. IN THIS
SYSTEM BATTERY NEGATIVE IS TIED TO GROUND INSIDE THE INVERTER. This
means that the battery cabinet and shelves are at ground potential as soon as negative
connections are made to the batteries. It is strongly recommended to make all negative
connections to the batteries the last step to prevent any chance of shorting battery positive to
ground. With the Battery Cabinet(s) fuse removed and the DC Breaker turned off, make
connections to battery positive first, working your way towards battery negative. Leave
individual strings of batteries open at the last battery negative until all batteries are installed.
Then connect each strings negative.
Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This section contains important instructions that a qualified service person should
follow during installation and maintenance of the system and batteries. ONLY a
qualified service person should work with the batteries.
CAUTION
Full voltage and current are always present at the battery terminals. The batteries used
in this system can produce dangerous voltages, extremely high currents, and a risk of
electric shock. They may cause severe injury if the terminals are shorted together or to
ground (earth). You must be extremely careful to avoid electric shock and burns
caused by contacting battery terminals or shorting terminals during battery installation.
Do not touch uninsulated battery terminals.

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A qualified electrician familiar with battery systems and required precautions must
install and service the batteries. Any battery used with this unit shall comply with the
applicable requirements for batteries in the standard for emergency lighting and power
equipment, UL 924 (Canada’s National Building Code). Cabinets are design to be used
with, and batteries must be replaced with, manufacturer battery number BAT-CG12105
for some models and battery number BAT-CG12205 for other models or a
manufacturer approved equivalent (see the battery wiring diagram that came with the
battery cables). If you substitute batteries not supplied by manufacturer, the unit’s UL
(cUL) listing is void and the equipment may fail. Installation must conform to national
and local codes as well. Keep unauthorized personnel away from batteries.
The electrician must take these precautions:
Wear protective clothing and eyewear. For battery systems >48vdc, wear rubber
gloves and boots. Batteries contain corrosive acids or caustic alkalis and toxic
materials and can rupture or leak if mistreated. Remove rings and metal wristwatches
or other metal objects and jewelry. Don’t carry metal objects in your pockets where the
objects can fall onto the batteries or into the system or battery cabinet.
Tools must have insulated handles and must be insulated so that they do not short
battery terminals. Do not allow a tool to short a battery terminal to another battery
terminal or to the cabinet at any time. Do not lay tools or metal parts on top of the
batteries, and do not lay them where they could fall onto the batteries or into the
cabinet.
Install the batteries as shown on the battery-wiring diagram provided with the system.
When connecting cables, never allow a cable to short across a battery’s terminals, the
string of batteries, or to the cabinet.
Align the cables on the battery terminals so that the cable lug does not contact any part
of the cabinet even if the battery is moved. Keep the cable away from any sharp metal
edges.
CAUTION
Install the battery cables so the battery cabinet or the system doors cannot pinch them.
External battery cabinet chassis ground (or earth) must be connected to the system’s
chassis ground (or earth). The ground conductor must be insulated. If you use conduit,
this ground conductor must be routed in the same conduit as the battery conductors.
Where conductors may be exposed to physical damage, protect conductors in
accordance with the National Electrical Code (NEC) or [Canadian Electrical Code
(CEC)].
If you are replacing batteries or repairing battery connections, follow the procedure in
the system user’s Guide to shut down your system and remove both AC and DC input
power.

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Before Installing the Batteries
Tools CAUTION
Always use insulated tools when you work with batteries. Always torque connections to
the manufacturer’s recommendations.
When you work with system batteries, you need the following tools. The tools must
be insulated so they do not short battery terminals to the cabinet. Wear the safety
equipment required by local code whenever the doors are open and whenever you
are working on batteries. Other tools may be necessary for optional batteries.
•Digital volt-ohm meter •Conductive grease or petroleum jelly
•7/16” socket wrench •Brush (to apply grease or petroleum jelly to terminals)
•3” extension socket •Safety equipment required by local codes
•Ratchet •Torque wrench calibrated in inch-pounds or Newton-meters
•Wire brush •Safety glasses with side shields
•Electrical tape
Battery Voltage (vdc)
Models 16.7k 24k 33k 40k 50k
Battery
Volts 240v 240v 240v 240v 240v
Battery Cable Sizing
The battery cable or wire used varies. For the 100 AH battery (SL-12105) the size is 6
AWG. For the 200 AH battery (SL-12205), the size is 4 AWG. This is because the
batteries string current varies with battery type.
If the batteries must be more than two feet (0.6 meters) from the system, you may
need to install larger battery cables between the battery cabinets and the system.
Using long cable runs and larger diameter cables require a modified installation of the
system; call SERVICE if you did not order the longer, larger-diameter cable with the
system.
DC Disconnect
Systems have a Main Battery Circuit Breaker inside the electronics cabinet; this breaker lets
you remove DC power from the batteries. Systems also have a fuse on each battery string
located in the battery cabinets.

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Installing and Connecting the Batteries
Battery Wiring Diagram
You should have received a battery-wiring diagram with your system. This battery-wiring
diagram shows how you should install the batteries, make terminal, and fuse connections. Use
the diagram as you follow the steps below.
Location
Before you start installing the batteries, you must install the system and any battery cabinets in
their permanent location. If you have not already done this, see “Location Guidelines” on
page 7 to choose a location.
CAUTION
To prevent damage to your equipment, do not move the system or separate battery
cabinets after the batteries are installed.
To make sure a location is acceptable for the system, review the requirements in Chapter 3.
Connecting the Cabinets
Wherever conductors may be exposed to physical damage, you must protect the conductors
in accordance with the NEC or (CEC). This includes battery cables between the system and a
separate battery cabinet and cables between battery cabinets (if you have more than one).
We recommend routing the battery cable through the chase nipples. The battery cables
shipped with the unit are designed for an installation with the battery cabinet immediately to
the right of (touching) the system.
If the cabinets must be farther apart, we recommend that you use conduit (cables not
included). Install the conduit for the battery cables according to local or national codes. If you
are using conduit, you must substitute your own cables for the cables shipped with the unit as
you follow the battery installation instructions. Remember that the terminal blocks supplied
with the unit and battery cabinets accept up to 4/0 AWG (21.15 mm2) wire. If code requires a
larger size cable, you must use cable splices. Perform the splices when the instructions
describe terminations at the terminal blocks. Use the correct type, length, and gauge of cable;
make sure your installation meets all applicable electrical codes.
Installing the Battery Cables between Cabinets
You must pull the battery cables and the equipment-grounding conductor through the
connecting nipple or through the conduit between the unit and the battery cabinet(s).
NOTE If you are using conduit, you must supply the correct length, gauge, and type of
battery cables.
Refer to the battery-wiring diagram to identify the battery cables you use to connect the unit to
the battery cabinet(s). Pull the cables through the nipple or conduit. Do not connect any cables
at this time.
If your unit has more than one battery cabinet, use the battery-wiring diagram to identify the
cables you use to connect the battery cabinets. Pull these cables through the connecting
nipple or conduit. Do not connect the cables.

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Making the Equipment Ground Connection
Each battery cabinet ground (or earth) must be connected to the system’s chassis ground.
You can make this connection at the ground terminals inside the system and the battery
cabinet as follows.
CAUTION
All grounding conductors should be insulated. If you are using non-insulated grounding
conductors, take special care to make sure that the grounding conductors cannot
accidentally contact live wires or the batteries.
In the system, find the ground compression lug labeled “GROUND”. This terminal is
next to the AC terminal blocks.
1. You must supply the equipment-grounding conductor that connects the system
to the nearest (or only) battery cabinet. Strip 0.5” (1.3 cm) of insulation from each
end of the equipment-grounding conductor. Then, connect one end of the
conductor to the ground lug in the system.
2. At the battery cabinet’s ground lug. Connect the end of the grounding conductor
to this lug.
3. If the unit has two battery cabinets, you must supply the grounding conductor
that connects the cabinets. Strip 0.5” (1.3 cm) of insulation from each end of this
grounding conductor. Connect one end to the ground lug in the first battery
cabinet, and connect the other end to the matching ground lug in the next battery
cabinet. Repeat this step if you have more than two battery cabinets.
NOTE When you connect a separate equipment-grounding conductor directly to building
steel, use the knockouts that are already on the unit. Do not make a knockout anywhere
on the cabinet where there is not already a knockout.
Electronics Cabinet Battery Block Connections
Do not connect any battery cables at this time. In the following procedure, you should
only make connections to the electronics cabinet’s battery block. Use the battery-wiring
diagram shipped with the battery cables as you follow these steps.
1. Find the positive battery cable pulled between the electronics cabinet and the
battery cabinet. At the ends of the cable, strip off 0.5” (1.3 cm) of insulation.
Now, look at the battery-wiring diagram. Notice that this cable is connected from
the positive position of the battery terminal block inside the electronics cabinet to
the outside of the fuse block inside of the battery cabinet. Insert the positive (+)
cable into fuse block and into the terminal block. Tighten the connections as
shown on the battery-wiring diagram.
2. Find the negative battery cable pulled between the electronics cabinet and the
battery cabinet. At the bare end of the cable, strip off 0.5” (1.3 cm) of insulation.
Now, look at the battery-wiring diagram. Notice that this is connected from the
negative position of the battery terminal block inside the electronics cabinet to a
battery inside of the battery cabinet. Insert the negative (-) cable into the
terminal block and insulate the other end that is in the battery cabinet. Tighten
the connection as shown on the battery-wiring diagram.
3. Repeat step 1 and 2 for each additional battery string (See battery layout
drawing for quantity of battery strings).

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Interconnect Connections between Battery Cabinets
Systems that split a battery string between 2 battery cabinets (50.0 kW system):
Find the battery cable that connects to the fuse block. At the bare end of the
cable, strip off 0.5” (1.3 cm) of insulation. Insert the cable into the fuse block.
Tighten the connection as shown on the battery-wiring diagram.
Fuse
All systems come with a fuse for each battery cabinet to protect the system. The
battery-wiring diagram shows the fuse location; a label inside the battery cabinet
shows the fuse size. The system itself has a DC fuse. At each battery cabinet,
find the cable that is connected to the other end of the fuse block. Insert the
cable. Tighten the connection as shown on the battery-wiring diagram.
Repeat this step for each cabinet.
Verify that the DC Breaker in the electronics cabinet is off and the fuse(s) in
the battery cabinet(s) are removed before connecting the batteries.
Arranging the Batteries
NOTE As you arrange the batteries, you must be wearing the required safety
equipment.
Arrange the batteries in the cabinet or the system only as shown in the battery-wiring
diagram. This arrangement is designed to maximize airflow around the batteries. The
cabinets are designed so that battery cases should never touch. Air should be free to
circulate. Clean the entire surface of all battery terminals with the wire brush before you
install the batteries to create good contact points.
Load the batteries into the system or battery cabinet(s). Starting with the bottom shelf,
load one shelf at a time.
CAUTION
Never install the batteries in an airtight enclosure.
Connecting the Cables Between Batteries
When you make battery terminal connections, use the torque wrench to tighten the
battery terminal connections securely. For most batteries, you can find out what torque
value to use by finding the battery number on the top of the battery. Then, use Table 6.1
to find the torque value for that battery.

114201I – System Installation Manual
19
Table 6.1 Battery Torque
Battery Type Torque
BAT-CG12105 or SL-12105 Torque to 120 in lbs.
(
13.6 Nm
)
BAT-CG12105A or SL-12105M Torque to 120 in lbs.
(
13.6 Nm
)
BAT-CG12105B Torque to 55 in lbs.
(
6.5 Nm
)
BAT-CG12105E or 12AVR100-3ET Torque to 100 in lbs. (11.3 Nm)
BAT-CG12105G Torque to 100 in lbs.
(
11.3 Nm
)
BAT-CG12105H or FT12-105 Torque to 110 in lbs. (12.4 Nm)
BAT-CG12205 or SL-12205 Torque to 120 in lbs.
(
13.6 Nm
)
BAT-CG12205B Torque to 60 in lbs. (6.8 Nm)
Now, follow these steps to connect the cables:
1. Using the battery-wiring diagram, determine which batteries belong to each
battery string.
2. Clean the cable connectors with the wire brush before you make the battery
connections.
NOTE As you carry out the following step, use these guidelines:
If you are using conductive grease, apply a thin coating of high-temperature
conductive grease on each post and every cable connector before you assemble
and torque the connection to slow corrosion.
If you use nonconductive grease like petroleum jelly, do not apply any grease
before you make the connections and torque them. Instead, make the connection
first; then, torque it to the value shown in Table 6.1. After you make the connection;
apply a coating of the nonconductive grease to the hardware at the battery
terminals.
3. In each battery string, connect the battery cables between the batteries as
shown in the battery-wiring diagram (positive terminal to negative terminal).
Torque the connections to the value shown for your battery in Table 6.1.
4. Connect the battery cables from one shelf to the next as shown on the battery-
wiring diagram.
5. Connect the fuse block to the positive of the battery as shown on the battery-
wiring diagram.
CAUTION
Hazardous voltage is present! System batteries are high current sources. These
batteries can produce dangerous voltages, extremely high currents, and a risk of
electric shock.
6. Install the battery cabinet(s) fuse(s). Next, use the voltmeter to check the DC
voltage between the positive (+) position on the battery block inside the
electronics cabinet and the unconnected battery negative terminal. This voltage
should be approximately the battery voltage record on the unit ID label. If it is
greater than + or – 5%, review the battery wiring diagram. Correct any wiring
errors and recheck the DC voltage; do not go on until your measurement is
within + or – 5%. If the measurement is too high and you cannot find the cause
of the problem, call SERVICE.