Staco Energy FirstLine User manual

The FIRSTLINE UPS
25KVA, 30KVA, AND 37.5KVA
Form No.003-2323 Rev B 09/04/2009
301 Gaddis Boulevard •Dayton, Ohio 45403
U.S. Toll Free 866-261-1191
[phone] •Fax: [phone]
Web site: www.stacoenergy.com
User’s Manual

Before Installing the UPS:
-Read all safety and installation instructions.
-Make sure that the UPS is the correct model for your application.
-Verify that the available power source matches the input rating of the UPS. Unless the
UPS is in the tall cabinet and is equipped with a transformer option, the source should be
120 volts line to neutral, three phase, ABC sequence, with a grounded neutral.
Before starting the UPS:
-Read all safety and operating instructions.
-Verify that the UPS is installed in a clean, temperature controlled area.
-If the UPS is installed at an altitude above 1000 meters, the output load capability must be
derated by 1% for each 100 meters above 1000 meters.
-Verify that the installation includes an input breaker of the proper rating.
-Verify that the wiring is correct and that all connections are neat and tight.
-Verify that the internal batteries have been connected.
-If an optional Extended Run Time Battery Cabinet is present, verify that it is equipped with
the optional breaker or that an external breaker has been provided as part of the
installation. The battery breaker should be closed before the UPS is started.
-Make sure that single phase loads are fairly evenly distributed across the three output
phases. Balanced operation maximizes efficiency and reliability. (Check the individual
output phase currents when the UPS is operating)
.

FirstLine UPS
Form No. 003-2323 Rev B
CONTENTS
Section 1.............................................................................................................................. 1
Introduction....................................................................................................................... 1
FirstLine UPS Part Number System ................................................................................. 2
Battery Option................................................................................................................... 2
Accessories...................................................................................................................... 3
Section 2.............................................................................................................................. 4
Safety Warnings ............................................................................................................... 4
Section 3.............................................................................................................................. 6
UPS Setup........................................................................................................................ 6
Inspecting The Equipment................................................................................................ 6
Floor Loading.................................................................................................................... 6
Clearances ....................................................................................................................... 6
Unloading the Cabinet(s).................................................................................................. 7
Placing The Cabinet ....................................................................................................... 10
Section 4............................................................................................................................ 11
Electrical Installation....................................................................................................... 11
Wiring Preparation.......................................................................................................... 11
Wiring Installation ........................................................................................................... 13
Wiring Specifications and Diagrams............................................................................... 15
Removing and Replacing The Front Panel..................................................................... 18
Connect The Internal Battery.......................................................................................... 18
Section 5............................................................................................................................ 20
Communication............................................................................................................... 20
Customer Interface......................................................................................................... 20
Section 6............................................................................................................................ 22
Operation........................................................................................................................ 22
Display Functions ........................................................................................................... 24
Section 7............................................................................................................................ 25
Initial Start Up................................................................................................................. 25
Normal Operation ........................................................................................................... 25
Manual Transfer to Bypass............................................................................................. 26
Manual Transfer to Inverter ............................................................................................ 26
External Bypass Arrangement........................................................................................ 26
Automatic Transfer To Bypass ....................................................................................... 27
Automatic Transfer To Inverter....................................................................................... 27
OverLoad........................................................................................................................ 28
Inverter........................................................................................................................ 28
Bypass........................................................................................................................ 28
Rectifier....................................................................................................................... 28
Section 8............................................................................................................................ 29
Battery Removal, Installation, and Service ..................................................................... 29
Polarity Verification Procedure ....................................................................................... 32
Stopping the Rectifier in the UPS................................................................................... 33
UPS Maintenance........................................................................................................... 34
Battery Fuse Replacement ............................................................................................. 35
Section 9............................................................................................................................ 37
Optional FirstLine Extended Run Time Battery Cabinet ................................................. 37
Section 10.......................................................................................................................... 38
FirstLine UPS Technical Specifications.......................................................................... 38

FirstLine UPS
Form No. 003-2323 Rev B
Table 1-Part Numbering System.......................................................................................... 2
Table 2-Symbols .................................................................................................................. 4
Table 3-Model Floor Loadings.............................................................................................. 6
Table 4-Input/Output Terminal ........................................................................................... 13
Table 5-Ground Lugs ......................................................................................................... 13
Table 6-FirstLine UPS 10-20kVA Current Requirements................................................... 14
Table 7-Terminal Block Wiring........................................................................................... 16
Table 8-Torque Values for TB1, 2, 3, 4.............................................................................. 21
Table 9-Indicator Status and Description ........................................................................... 23
Table 10-Menu Map for Display Functions......................................................................... 24
Figure 1-The FirstLine UPS 25-37.5kVA.............................................................................. 1
Figure 2-UPS on pallet......................................................................................................... 7
Figure 3-Shipping Bracket.................................................................................................... 8
Figure 4-Lifting fork area...................................................................................................... 9
Figure 5-Leveling foot being adjusted down to the floor..................................................... 10
Figure 6-Bottom View......................................................................................................... 12
Figure 7-Terminal Blocks ................................................................................................... 13
Figure 8-UPS Wiring-Single Line Diagram......................................................................... 17
Figure 9-Removing the UPS Front Panel........................................................................... 18
Figure 10-Internal Battery................................................................................................... 19
Figure 11-Communication Options and Control Terminals................................................. 20
Figure 12-TB3.................................................................................................................... 21
Figure 13-TB4.................................................................................................................... 21
Figure 14-FirstLine Front Panel Display and Control Module............................................. 22
Figure 15-Battery Tray ....................................................................................................... 29
Figure 16-Battery Tray ....................................................................................................... 30
Figure 17-Battery Installation ............................................................................................. 31
Figure 18-The FirstLine Extended Run Time Battery Cabinet............................................ 37

FirstLine UPS
Form No. 003-2323 Rev B 1
SECTION 1
Introduction
The FirstLine uninterruptible power supply (UPS) is a true online, double-conversion, three-
phase system that can be used to prevent loss of valuable electronic information and
minimize equipment downtime. It is ideal for protecting essential information technology
and electrical engineering infrastructure in corporate, telecom, health care, banking, and
industrial applications.
The FirstLine UPS continually monitors incoming electrical power and removes surges,
spikes, sags, and other irregularities that are inherent in commercial utility power. Working
with a building’s electrical systems, the UPS supplies clean, consistent power that sensitive
electronic equipment requires for reliable operation. During brownouts, blackouts, and other
power interruptions, batteries provide emergency power to safeguard operation.
Figure 1 shows two versions available: Short cabinet for compact 208/208 or 220/220
requirements and the tall cabinet for extended run time built in, or 480V I/O.
ESC
+
EPO
23.00 [584.2mm]
70.00 [1778.0mm]
FOR VENTILATION
WALL CLEARANCE
12.00 [304.8mm] MIN.31.94 [811.2mm]
23.00 [584.2mm]
52.00 [1320.8mm]
EPO
+
ESC
(2) RIGID CASTERS
(2) SWIVEL CASTERS
POWER CABLE ENTRY
7.25 [184.2mm] X 3.00 [76.2mm]
(4) LEVELING FEET
INTAKE VENTILATION HOLES
EXTERNAL BATTERY POWER CABLE ENTRY
2.25 [57.2mm] X 1.75 [44.5mm]
EXTERNAL BATTERY CONTROL
CABLE ENTRY
2.25 [57.2mm] X 1.75 [44.5mm]
32.38 [822.4mm]
Figure 1-The FirstLine UPS 25-37.5kVA

FirstLine UPS
Form No. 003-2323 Rev B 2
FirstLine UPS Part Number System
Table 1-Part Numbering System
Full Part Number
kVA
Input Voltage
Output
Voltage
Run
Time
(min.)
Cabinet
Basic Part
No.
Battery
Option
Other
Options
25
208Y/120
208Y/120
11
Short
FLU-25S-20
-1
480
208Y/120
11
Tall
FLU-25T-42
-1
-I
480
480Y/277
11
Tall
FLU-25T-44
-1
-I
208Y/120
208Y/120
28
Tall
FLU-25T-20
-2
208Y/120
208Y/120
11
Tall
FLU-25T-20
-1
-I
220Y/127
220Y/127
11
Short
FLU-25S-22
-1
220Y/127
220Y/127
31
Tall
FLU-25T-22
-2
30
208Y/120
208Y/120
8
Short
FLU-130S-20
-1
480
208Y/120
8
Tall
FLU-30T-42
-1
-I
480
480Y/277
8
Tall
FLU-30T-44
-1
-I
208Y/120
208Y/120
22
Tall
FLU-30T-20
-2
208Y/120
208Y/120
8
Tall
FLU-30T-20
-1
-I
220Y/127
220Y/127
11
Short
FLU-30S-22
-1
220Y/127
220Y/127
24
Tall
FLU-30T-22
-2
37.5
208Y/120
208Y/120
5
Short
FLU-37S-20
-1
480
208Y/120
5
Tall
FLU-37T-42
-1
-I
480
480Y/277
5
Tall
FLU-37T-44
-1
-I
208Y/120
208Y/120
16
Tall
FLU-37T-20
-2
208Y/120
208Y/120
5
Tall
FLU-37T-20
-1
-I
220Y/127
220Y/127
5
Short
FLU-37S-22
-1
220Y/127
220Y/127
17
Tall
FLU-37T-22
-2
Battery Option
-1 = 1 string
-2 = 2 string
-0 = Without Batteries
Other Options
Suffix
Notes
Isolation Transformer
-I
Isolation transformer required for use with delta (3-
wire) input. Standard is K20 rated.
220V Models are not listed to UL, CUL, or CSA.

FirstLine UPS
Form No. 003-2323 Rev B 3
Accessories
There are several external accessories that are designed to work with the FirstLine UPS:
The FirstLine Extended Run Time Battery Cabinet allows the addition of up to three
additional battery strings per cabinet to increase the available battery run time. Up to
three FirstLine Extended Run Time Battery Cabinets can be used with each UPS.
The cabinet is styled to match the FirstLine UPS. The battery cabinet can be ordered
with an optional disconnect switch or a user provided disconnect arrangement can
be used. The FirstLine Extended Run Time Battery Cabinet is listed to UL1778.
The FirstLine Options Cabinet is a steel enclosure designed to hold option devices
to be used in conjunction with the FirstLine UPS. The enclosure is styled to match
the UPS and includes provisions for terminating a number of conduits to facilitate
wiring. Available option devices include several transformers, a Maintenance Bypass
Switch (MBS), output panelboards, and output meters. The FirstLine Options
Cabinet is listed to UL1778.
The FirstLine Wall-Mounted Maintenance Bypass Switch is the same MBS switch
arrangement that is available in the Options Cabinet, but in a more compact
enclosure that mounts on a wall. The FirstLine Wall-Mounted Maintenance Bypass
Switch is listed to UL1778.
The FirstLine UPS is also available together with the FirstLine Extended Run Time
Battery Cabinet to form the FirstLine UPS Emergency Lighting System which is
listed to UL924.
Contact Staco Energy Company, your tailored power solutions provider, for
additional information.

FirstLine UPS
Form No. 003-2323 Rev B 4
SECTION 2
Safety Warnings
This manual contains important instructions that you should follow during installation and
maintenance of the UPS and batteries. Please read all instructions before operating the
equipment and save this manual for future reference.
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
a. Do not use outdoors.
b. Do not route wiring across or near hot surfaces.
c. Do not install near gas or electric heaters.
d. Use caution when servicing batteries. Battery acid can cause burns to skin and
eyes. If acid is spilled on skin or in eyes, flush acid with fresh water and contact
a physician immediately.
e. Equipment should be installed where it will not readily be subjected to tampering
by unauthorized personnel.
f. The use of accessory equipment not recommended by the manufacturer may
cause an unsafe condition.
g. Do not use this equipment for other than intended use.
Table 2-Symbols
Danger / Risk of Electric Shock
Caution
Risk of Explosion
Note
Ground Connection
Electrostatic Sensitive Device
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS

FirstLine UPS
Form No. 003-2323 Rev B 5
This UPS contains LETHAL VOLTAGES. All repairs and service should be
performed by AUTHORIZED SERVICE PERSONNEL ONLY. There are NO
USER SERVICEABLE PARTS inside the UPS.
This UPS contains its own energy source (batteries). The UPS output may
carry live voltage even when the UPS is not connected to an AC supply.
To reduce the risk of fire or electric shock, install this UPS in a temperature
and humidity controlled, indoor environment, free of conductive contaminants.
Do not operate near water or excessive humidity (95% maximum).
Input and output over-current protection and disconnect switches must be
provided by others.
Batteries can present a risk of electrical shock or burn from high short circuit
current. Observe proper precautions. Servicing should be performed by qualified
service personnel knowledgeable of batteries and required precautions. Keep
unauthorized personnel away from batteries.
Risk of explosion if batteries are replaced by an incorrect type. Replace with same
type and rating only.
Proper disposal of batteries is required. Refer to your local codes for disposal
requirements.
Never dispose of batteries in a fire. Batteries may explode when exposed to flame.
DANGER
WARNING
CAUTION

FirstLine UPS
Form No. 003-2323 Rev B 6
SECTION 3
UPS Setup
This section describes:
Equipment inspection
Floor loading and clearances
Removing and replacing the cabinet panels
Unloading the cabinet(s)
Inspecting The Equipment
If any equipment has been damaged during shipment, keep the shipping and packing
materials for the carrier or place of purchase and file a claim for shipping damage. If you
discover damage after acceptance, file a claim for concealed damage.
To file a claim for shipping damage or concealed damage: 1) File with the carrier within 15
days of receipt of the equipment, 2) Send a copy of the damage claim within 15 days to
your service representative.
Floor Loading
When planning the installation, consider the UPS weight for floor loading. The strength of
the installation surface must be adequate for point and distributed loading. The
approximate weights are shown in the following table.
Table 3-Model Floor Loadings
STANDARD MODEL FLOOR LOADING
25-30-37.5 KVA
Maximum Weight
Point Loading
Standard
1253 Lbs (568 kg)
399 lb/in2(28 kg/cm2)
Extended Run
1765 Lbs (801 kg)
562 lb/in2(39 kg/cm2)
480 I/O
1855 Lbs (841 kg)
590 lb/in2(42 kg/cm2)
Clearances
The following clearances are recommended for the FirstLine UPS.
From Front of Cabinet
36” (91.4 cm) working space
From Back of Cabinet
12” (30.5 cm)
From Side of Cabinet
Minimum 24” (61 cm)

FirstLine UPS
Form No. 003-2323 Rev B 7
Unloading the Cabinet(s)
The following tools are required for unloading the cabinet(s):
Wrenches for 1/4” bolts and 1/2” nut
Forklift
The UPS and optional cabinets are heavy (see Table 3). Unloading the cabinets
requires at least two people to safely remove the cabinets from the pallet.
To remove the UPS or optional cabinets from the ship pallet:
1. Remove all banding, wrapping, and foam protectors.
2. Loosen the six 1/2” nuts and washers securing the shipping brackets to the pallet
(see Figures 2 and 3).
3. Remove and discard the four 1/4” bolts and washers securing the shipping brackets
to the cabinet side panels. Also remove the four ¼” bolts and washers the bracket
surrounds but does not touch. Save these as they must be reinstalled later. Pull the
brackets away from the cabinet.
Pallet
Shipping bracket - (1) this
side and opposite side
Forklift access
from rear
Figure 2-UPS on pallet
CAUTION

FirstLine UPS
Form No. 003-2323 Rev B 8
Remove and discard
1/4" bolt and washers
(4) places
Remove and discard
1/4" bolt and washers
(4) places
Pull (2) shipping brackets
away from cabinet.
Loosen (3) 1/2" nuts on each bracket
Remove (4) 1/4" bolts.
Reinstall after the unit is on the floor
Remove (4) 1/4" bolts.
Reinstall after the unit is on the floor
Figure 3-Shipping Bracket
4. Remove the front cover (see Figure 9) before inserting the lifting forks.
5. Ensure that the four (4) leveling feet are raised so that they will not touch the floor
when the cabinet is placed on the floor.
6. Lift the cabinet with a forklift from the rear of the unit, one to two inches (1”-2” [2.5-
5cm]) above the pallet (see figure 5).
7. Slide the pallet completely away from the raised cabinet.
8. Slowly lower the cabinet to the floor or other appropriate flat service.
9. Reinstall the front cover and add (4) ¼” bolts and washers (see figure 3).
10. Roll the cabinet to the desired location
11. Do not move the cabinet to another location by forklift , as the cabinets are heavy
and may fall.
DO NOT ALLOW THE FORKLIFT TO MOVE WHILE THE CABINET IS
RAISED, ONLY MOVE THE CABINET VERTICALLY TO REMOVE THE
PALLET FROM UNDER THE CABINET.

FirstLine UPS
Form No. 003-2323 Rev B 9
Place forks in this area
so as not to damage the
leveling feet or casters.
Set forks to a maximum
13 inches at outside width.
Leveling foot
13.00" [330mm] Max.
Figure 4-Lifting fork area

FirstLine UPS
Form No. 003-2323 Rev B 10
Placing The Cabinet
Once the cabinet has been rolled into position, remove the front panel to access the front
leveling feet by pulling the panel outward at the bottom of the unit until it unsnaps and then
lift up and off the cabinet (see figure 9). Adjust the leveling feet as shown in figure 5.
Lower the leveling foot
to the floor to secure
the UPS in position
Figure 5-Leveling foot being adjusted down to the floor

FirstLine UPS
Form No. 003-2323 Rev B 11
SECTION 4
Electrical Installation
The FirstLine has the following power connections:
3-phase (L1, L2, andL3), neutral, and ground connection for rectifier/bypass input
3-phase (L1, L2, and L3), neutral, and ground connection for load output
The input neutral connection is not used when the UPS is equipped with the optional
isolation transformer.
The nominal input/output voltages are:
120/208 VAC is available in the short cabinet or tall cabinet.
208 VAC, 60 Hz delta input is available when using the tall cabinet with an input
isolation transformer.
127/220 VAC is available in the short or tall cabinet.
480V, 60 Hz input is available when using the tall cabinet with an input transformer,
(isolation or auto.)
480/480 Vac is available when using the tall cabinet with an input and output
transformer.
Input and output over current protection and disconnect switch must be provided by others.
Only qualified service personnel (such as a licensed electrician) should perform the
UPS installation and initial startup. Risk of electrical shock.
Wiring Preparation
To begin wiring the UPS:
1. Verify that the electrical connections to the installation site have been properly
installed.
2. A wall-mounted, user-supplied, readily-accessible disconnection device must be
incorporated in the input wiring.
Compare the circuit breaker ratings to the ones in Table 6 on page 14.
WARNING

FirstLine UPS
Form No. 003-2323 Rev B 12
3. Switch off utility power to the distribution point where the UPS will be connected. Be
absolutely sure there is no power.
4. Determine your equipment’s grounding requirements according to your local
electrical code.
5. Remove the UPS rear panel.
6. Conduit landing plates are located at the rear bottom of the base to accommodate
bottom wire entry to the cabinet (see figure 6).
Remove plate and drill or punch hole to fit conduit bushing with Greenlee punch or similar
device. Make certain that the bushing will be clear in the opening in the base. Mount
bushing to plate and tighten to manufacturer’s recommendations. Replace the plate and
mount conduit.
1.62 [41.3mm]
4.75 [120.7mm]
(4) LEVELING FEET
.81 [20.6mm]
4.75 [120.7mm]
(2) SWIVEL CASTERS
(2) RIGID CASTERS
FRONT
REAR
EXTERNAL BATTERY POWER
CABLE ENTRY
2.25 [57.2mm] X 1.75 [44.5mm]
EXTERNAL BATTERY CONTROL
CABLE ENTRY
2.25 [57.2mm] X 1.75 [44.5mm]
4.75 [120.7mm]
POWER CABLE ENTRY
7.25 [184.2mm] X 3.00 [76.2mm]
Figure 6-Bottom View

FirstLine UPS
Form No. 003-2323 Rev B 13
Wiring Installation
1. Unscrew and remove the rear panel.
2. Connect the input wires to the proper terminals shown in Figure 7. Insure proper
phase rotation. Input neutral is not required if the UPS is equipped with an optional
input isolation transformer.
3. Connect the output wires to the proper terminals shown in Figure 7.
4. Replace the rear panel.
NOTICE
FOR SUPPLY CONNECTIONS,
USE WIRES SUITABLE FOR AT
LEAST 75°C
A B C N
OUTPUT
INPUT NCBA
Figure 7-Terminal Blocks
Table 4-Input/Output Terminal
INPUT/OUTPUT TERMINAL TIGHTENING TORQUE
#2/0 - #6 AWG
120 inch-pounds
#8 - #12 AWG
50 inch-pounds
Table 5-Ground Lugs
GROUND LUGS TIGHTENING TORQUE
#10 AWG
35 inch-pounds
#8 AWG
40 inch-pounds
#4 - #6 AWG
45 inch-pounds
#1/0 - #2 AWG
50 inch-pounds

FirstLine UPS
Form No. 003-2323 Rev B 14
Table 6-FirstLine UPS 25-37.5 kVA Current Requirements
UPS
Rating
Input
Voltage
Input
Transformer
Option
Max. Input
Current (A)
Allowed for
Specified
Branch
Protector
Maximum
Allowable Branch
Circuit Protection
(A)
25 kVA
208 V
None
80
100
25 kVA
208 V
Isolation
80
100
25 kVA
220 V
None
80
100
25 kVA
480 V
Standard auto
40
50
25 kVA
480 V
Isolation
40
50
30 kVA
208 V
None
100
125
30 kVA
208 V
Isolation
100
125
30 kVA
220 V
None
100
125
30 kVA
480 V
Standard auto
48
60
30 kVA
480 V
Isolation
48
60
37 kVA
208 V
None
120
150
37 kVA
208 V
Isolation
120
150
37 kVA
220 V
None
120
150
37 kVA
480 V
Standard auto
60
75
37 kVA
480 V
Isolation
60
75
UPS
Rating
Output
Voltage
Rated Max.
Output Current
(A)
(note 2)
Maximum
Allowable
Circuit
Protection (A)
PF=.8
PF=1
25 kVA
208 V
70
55
(note 1)
25 kVA
220 V
66
52
(note 1)
25 kVA
480 V
30
24
50
30 kVA
208 V
83
66
(note 1)
30 kVA
220 V
78
63
(note 1)
30 kVA
480 V
36
29
60
37 kVA
208 V
104
83
(note 1)
37 kVA
220 V
98
78
(note 1)
37 kVA
480 V
45
36
75
Note 1: Output circuit protection requirement determined by distribution circuit.
Note 2: Do not apply continuous loads in excess of rated maximum output current. If the power factor of
the load is not known, use PF=1. The UPS controls will permit transient loads within the limits
described in the OVERLOAD section of this manual.

FirstLine UPS
Form No. 003-2323 Rev B 15
Wiring Specifications and Diagrams
Note: Input neutral must be wired for proper operation or the UPS will not start.
Note: Do not over-tighten the screws; be sure to use the specified tightening
torque values shown in Table 4, Table 5, and Table 6.
25 KVA, 208V: CAUTION to reduce the risk of fire, connect only to a circuit provided with
100 amperes maximum branch circuit protection in accordance with the
National Electrical Code, ANSI/NFPA 70.
25 KVA, 480V: CAUTION to reduce the risk of fire, connect only to a circuit provided with
50 amperes maximum branch circuit protection in accordance with the
National Electrical Code, ANSI/NFPA 70.
30 KVA, 208V: CAUTION to reduce the risk of fire, connect only to a circuit provided with
125 amperes maximum branch circuit protection in accordance with the
National Electrical Code, ANSI/NFPA 70.
30 KVA, 480V: CAUTION to reduce the risk of fire, connect only to a circuit provided with
60 amperes maximum branch circuit protection in accordance with the
National Electrical Code, ANSI/NFPA 70.
37.5 KVA, 208V:CAUTION to reduce the risk of fire, connect only to a circuit provided with
150 amperes maximum branch circuit protection in accordance with the
National Electrical Code, ANSI/NFPA 70.
37.5 KVA, 480V:CAUTION to reduce the risk of fire, connect only to a circuit provided with
75 amperes maximum branch circuit protection in accordance with the
National Electrical Code, ANSI/NFPA 70.
220V units should be equipped with the same maximum rated breaker as 208V units.

FirstLine UPS
Form No. 003-2323 Rev B 16
Table 7-Terminal Block Wiring
UPS
Rating
Voltage
Input
Transformer
Type
Phase
Conductor
Min/Max
Neutral
Conductor
Min/Max
Neutral Conductor with
non-linear loads
Min/Max
Ground Wire
Min/Max
25kva
208/120
NA
#2/2-0
#2/2-0
#2/2-0
#8/1-0
208
isolation
#2/2-0
(none)
(none)
#8/1-0
220/127
NA
#2/2-0
#2/2-0
#2/2-0
#8/1-0
480/277
auto
#4/2-0
#4/2-0
#4/2-0
#10/1-0
480
isolation
#4/2-0
(none)
(none)
#10/1-0
30kva
208/120
NA
#1-0/2-0
#1-0/2-0
#1-0/2-0
#6/1-0
208
isolation
#1-0/2-0
(none)
(none)
#6/1-0
220/127
NA
#1-0/2-0
#1-0/2-0
#1-0/2-0
#6/1-0
480/277
auto
#4/2-0
#4/2-0
#4/2-0
#10/1-0
480
isolation
#4/2-0
(none)
(none)
#10/1-0
37.5kva
208/120
NA
#1-0/2-0
#1-0/2-0
#1-0/2-0
#6/1-0
208
isolation
#1-0/2-0
(none)
(none)
#6/1-0
220/127
NA
#1-0/2-0
#1-0/2-0
#1-0/2-0
#6/1-0
480/277
auto
#3/2-0
#3/2-0
#3/2-0
#8/1-0
480
isolation
#3/2-0
(none)
(none)
#8/1-0
OUTPUT-Minimum wire size required to support rated load. Smaller wire may be used if rated
load current is not needed and the appropriate circuit protection is applied.
UPS
Rating
Voltage
Output
Transformer
Type
Phase
Conductor
Neutral
Conductor
Neutral Conductor with
non-linear loads
Ground Wire
25 kVA
208/120
NA
#2
#2
#2
#8/1-0
220/127
NA
#2
#2
#2
#8/1-0
480/277
auto
#4
#4
#4
#10/1-0
30 kVA
208/120
NA
#1
#1
#1
#6/1-0
220/127
NA
#1
#1
#1
#6/1-0
480/277
auto
#4
#4
#4
#10/1-0
37.5kVA
208/120
NA
#1-0
#1-0
#1-0
#6/1-0
220/127
NA
#1-0
#1-0
#1-0
#6/1-0
480/277
auto
#4
#4
#4
#8/1-0
Note: No output circuit protection is required if the output conductor sizes are at least as large as
the input conductors, unless the UPS is equipped with an input isolation transformer. If the UPS is
equipped with an input isolation transformer, the UPS is considered a separately derived source
and circuit protection for the output conductors must be provided.
Use at least 75°C-rated copper wire. Minimum wire size is based on 120/208 full load ratings
applied to NEC Code Table 310-16. Code may require a large AWG size than shown in this table
because of temperature, number of conductors in the conduit, or long service runs. Follow local
requirements.