Dometic Go Power GP-ISW-200 User manual

PURE SINE
WAVE INVERTER
User Manual
GP-ISW-200/400
© 2021 Go Power!
Worldwide Technical Support and Product Information gpelectric.com
Go Power! | Dometic
201-710 Redbrick Street Victoria, BC, V8T 5J3
Tel: [phone]
82654_MAN_ISW200-400_RevA

[page 2] | gpelectric.com
Congratulations on purchasing your Go Power! GP-ISW Inverter. The unit is a highly reliable DC-AC
inverter system, designed with advanced power electronic and microprocessor technology offering
the following features;
• Pure Sine wave output (THD <5%).
• Intelligent power management software.
• Load and temperature controlled cooling fan.
• GP-SWR-A/GP-ISW-R management and control.
• Dry contact terminals.
• Advance protection features;
• Input over/under voltage protection.
• Internal over temperature protection.
• Input reverse polarity protection (fuse).
• Output overload protection.
• Output short-circuit protection.
Product Packaging
Please safely store the packaging the GP-ISW was delivered in or please recycle
the packaging components as outlined below;
CFB
CFB
3
4
7
CFB
CFB
3
4
7
Plastic Bag
Plastic Bubble
Wrap
LDPE
Low Density
Polyethylene
CFB
CFB
3
4
7
CFB
CFB
3
4
7
Corrugated berboard
Main box &
Internal sleeve
CFB
CFB
3
4
7
Corrugated
Recycles
www.corrugated.org
www.earth911.com/recycling-center-search-guides
Local recycling centres can be found here;

gpelectric.com | [page 3]
2. GENERAL INFORMATION ........................................................4
2.1 CAUTIONS / WARNINGS......................................................................4
2.2 DISCLAIMERS....................................................................................10
2.3 GP-ISW KIT PARTS .............................................................................11
2.3.1 PARTS CHECKLIST................................................................11
2.4 UNIT DIMENSIONS ............................................................................12
2.5 VOLTAGE AND TEMPERATURE PERFORMANCE ..................................13
3. INSTALLATION ............................................................................15
3.1 TYPICAL SYSTEM OVERVIEW .............................................................15
3.2 MOUNTING REQUIREMENTS .............................................................16
3.3 DC WIRING .......................................................................................18
3.3.1 DC WIRING SIZING..............................................................19
3.3.2 DC OVERCURRENT PROTECTION..........................................20
3.3.3 PREPARING THE DC CABLES ................................................20
3.3.4 DC CABLE CONNECTIONS....................................................20
3.3.5 WIRING THE INVERTER TO THE BATTERIES ..........................21
3.3.6 DC GROUNDING..................................................................22
3.4 AC WIRING .......................................................................................22
3.4.1 AC OUTPUT INTERFACE .......................................................23
3.4.2 GP-ISW 200/400AC OUTPUT INTERFACE..............................23
4. OPERATION .................................................................................25
4.1 FINAL INSPECTION ............................................................................26
4.2 TESTING THE INSTALLATION..............................................................26
4.3 CONNECTING THE AC LOADS ............................................................26
4.4 LED INDICATORS...............................................................................26
4.4.1 INPUT VOLTAGE LEVEL ........................................................26
4.4.2 INVERTER STATUS TO DISPLAY FAULT CONDITION ...............27
4.5 FUNCTION SWITCH ...........................................................................28
4.5.1 OUTPUT VOLTAGE SELECTION (S1&S2) ................................28
4.4.2 OUTPUT FREQUENCY SELECTION (S3)..................................28
4.6 POWER SAVING SELECTION (S4)........................................................28
4.8 SHUTDOWN CONDITIONS .................................................................29
5. WARRANTY RETURN PROCEDURE .................................30
6. PRODUCT END OF LIFE & RECYCLING..........................31
www.earth911.com/recycling-center-search-guides
CONTENTS

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2.1 CAUTIONS / WARNINGS
This document contains important safety instructions for the products produced by Go Power.
Read all instructions and cautionary markings on the product and on any accessories or
additional equipment included in the installation. Failure to follow these instructions could result
in severe shock or possible electrocution. Use extreme caution at all times to prevent accidents.
All electrical work must be performed in accordance with local and national electrical codes.
These instructions are for use by qualied personnel who meet all local and governmental code
requirements for licensing and training for the installation of electrical power systems with AC
and DC voltage up to 600 volts.
Installation, maintenance, and connection of inverters must be performed by qualied personnel,
in compliance with local electrical standards, wiring rules, and the requirements of local power
authorities and/or companies.
Safety regulations relevant to the location shall be followed during installation, operation and
maintenance. Improper operation may have a risk of electric shock or damage to equipment and
property.
2. GENERAL INFORMATION

gpelectric.com | [page 5]
General Safety
WARNING!
Limitations on Use
CAUTION!
Equipment Damage
This equipment is NOT intended for use with life support equipment
or other medical equipment or devices.
This product is designed for indoor/compartment installation. It must
not be exposed to any liquids, moisture of any type.
Only use components or accessories recommended or sold by Go
Power! or its authorized agents.
IMPORTANT
Do not attempt to install this equipment if it appears to be damaged
in any way. See the Warranty section for instructions on returning the
equipment.
WARNING!
Hazard to Human Life
This type of notation indicates that the hazard
could be harmful to human life.
WARNING!
Shock Hazard Danger of shock or electrocution.
WARNING!
Burn / Fire Hazard Danger of hot surface and/or re.
CAUTION!
Hazard to Equipment
This type of notation indicates that the hazard may
cause damage to the equipment.
IMPORTANT
This type of notation indicates that the information
provided is important to the installation, operation
and/or maintenance of the equipment. Failure to
follow the recommendations in such a notation
could result in annulment of the equipment
warranty.
i
GENERAL INFORMATION

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Personal Safety
WARNING!
Personal Injury
Use safe lifting techniques when lifting this equipment as
recommended by the Occupational Safety and Health Association
(OSHA) or other local codes.
Use standard safety equipment when working on this equipment, such
as safety glasses, ear protection, steel-toed safety boots, safety hard
hats, etc.
Use standard safety practices when working with electrical equipment.
(Remove all jewelry, use insulated tools, wear cotton clothing, etc.)
Never work alone when installing or servicing this equipment. Have
someone nearby that can assist if necessary.
Ensure that children, pets, and other animals are kept away from the
inverter, solar arrays, battery bank, and utility grid components.
If the equipment is used in a manner not specied by the
manufacturer, the protection provided by the equipment may be
impaired.
Equipment Safety
GENERAL INFORMATION

gpelectric.com | [page 7]
WARNING!
Lethal Voltage
Review the system conguration to identify all possible sources
of energy. Ensure ALL sources of power are disconnected before
performing any installation or maintenance on this equipment.
Conrm that the terminals are de-energized using a validated
voltmeter (rated for a minimum 1000 VAC and 1000 VDC) to verify
the de-energized condition.
Do not perform any servicing other than that specied in the installation
instructions unless qualied to do so, or have been instructed to do so
by Go Power! Technical Support personnel.
To avoid electric shock, disconnect the DC input and AC input of
the inverter at least 5 minutes before performing any installation
or maintenance.
Do not tighten the AC and DC terminals or pull on the AC and DC wiring
when the inverter is running.
WARNING!
Fire Hazard
Do not keep combustible or ammable materials in the same room with
the equipment. Some products contain relays with moving parts and
are not ignition-protected.
Ensure AC, DC, and ground cable sizes conform to local codes. See
product manuals for minimum size requirements.
Ensure all conductors are in good condition.
Do not operate the unit with damaged or substandard cabling.
CAUTION!
Equipment Damage
When connecting cables from the inverter to the battery terminals,
ensure the proper polarity is observed. Connecting the cables
incorrectly can damage or destroy the equipment and void the
product warranty.
Thoroughly inspect the equipment prior to energizing. Verify that no
tools or equipment have been inadvertently left behind.
Keep all vents clear of obstructions that can prevent proper air ow
around, or through, the unit.
CAUTION!
Equipment Damage
Static electricity may damage electronic components. Take appropriate
steps to prevent such damage to the inverter; otherwise the warranty
may be annulled.
GENERAL INFORMATION

[page 8] | gpelectric.com
Battery Safety
WARNING!
Explosion, Electrocution,
or Fire Hazard
Ensure the cables (conductors) are properly sized.
Ensure clearance requirements are strictly enforced around the batteries.
Ensure the area around the batteries is well ventilated and clean
of debris.
Never smoke, or allow a spark or ame near the batteries.
Always use insulated tools. Avoid dropping tools onto batteries or
other electrical parts.
Never charge a frozen battery.
Never use old or untested batteries. Check each battery’s label for age,
type, and date code to ensure all batteries are identical.
If a battery must be removed, always remove the grounded terminal
from the battery rst. Make sure all devices are de-energized or
disconnected to avoid causing a spark.
IMPORTANT
Use the battery types recommended by Go Power. Follow the battery
manufacturer’s recommendations for installation and maintenance.
Insulate batteries as appropriate against freezing temperatures. A
discharged battery will freeze more easily than a charged one.
If a remote or automatic generator control system is used, disable the
starting circuit and/or disconnect the generator from its starting battery
while performing maintenance to prevent accidental starting.
Wear complete eye and clothing protection when working with
batteries. Avoid touching bare skin or eyes while working
near batteries.
Keep plenty of fresh water and soap nearby in case battery acid
contacts skin, clothing, or eyes.
If battery acid contacts skin or clothing, wash immediately with soap
and water. If acid enters the eye, immediately ood it with running
cold water for at least 20 minutes and get medical attention as soon
as possible.
GENERAL INFORMATION

gpelectric.com | [page 9]
CAUTION!
Equipment Damage
When connecting cables from the inverter to the battery terminals,
ensure the proper polarity is observed. Connecting the cables
incorrectly can damage or destroy the equipment and void the
product warranty.
Thoroughly inspect the equipment prior to energizing. Verify that no
tools or equipment have been inadvertently left behind.
Ensure clearance requirements are strictly enforced.
Keep all vents clear of obstructions that can prevent proper air ow
around, or through, the unit.
CAUTION!
Equipment Damage
Static electricity may damage electronic components. Take appropriate
steps to prevent such damage to the inverter; otherwise the warranty
may be annulled.
i
GENERAL INFORMATION

[page 10] | gpelectric.com
2.2 DISCLAIMERS
IMPORTANT: Please follow installation and wiring instructions exactly as outlined to ensure safety.
We recommend installation by an RV/marine technician or professional electrician to ensure adherence
to relevant electrical codes. We have made every reasonable effort to ensure the accuracy of the
instructions in this manual, but Go Power does not guarantee that the information is error free,
nor do we make any other representation, warranty or guarantee that the information is accurate,
correct, reliable or current. The specications in this manual are for reference purposes only and
are subject to change without notice. For additional information please see www.gpelectric.com.
DISCLAIMER: Go Power disclaims liability for any direct, indirect or incidental damages caused by,
or in case of, installation not performed following the instructions and cautions in this manual. Go
Power will refuse requests for exchanges or returns, resulting from the purchase and installation
of items which do not comply with local codes. To avoid such concerns Go Power recommends
installation by a professional electrician or RV technician. Examples that are shown within this
manual are for illustrative purposes only.
GENERAL INFORMATION

gpelectric.com | [page 11]
2.3 GP-ISW KIT PARTS
Please unpack and make sure all parts shown in the list below are included in the kit. If any parts
are missing please contact Go Power customer service team at [email protected]
or 1.866.247.6527.
2.3.1 PARTS CHECKLIST
ITEM # DESCRIPTION
01 GP-ISW Unit 1
02 Ring Terminal 2
2 1
GENERAL INFORMATION

[page 12] | gpelectric.com
Model A (mm) B (mm) C (mm) D (mm) E (mm) F (mm)
GP-ISW200 187 35.7 116 150 8.0 68
GP-ISW400 187 35.7 116 150 8.0 68
GP-ISW700 330 80 132 200 7.0 83
GP-ISW1000 372 69 196 200 7.0 83
GP-ISW1500 421 92 196 248 7.0 83
GP-ISW2000 443 103 196 248 7.0 83
GP-ISW3000 442 103 196 255 7.0 158
GP-ISW4000 462 113 196 255 7.0 158
2.4 UNIT DIMENSIONS
F
A
D
E
C
B
GENERAL INFORMATION

gpelectric.com | [page 13]
GP-ISW-200 Specification
Electrical
Specification
Model No.
Item
GP-ISW-200-12 GP-ISW-200-24
Input
Voltage
12VDC 24VDC
Voltage Range
10.0~16.0VDC 2 0.0~32.0VDC
No Load Current
< 0.5A < 0.4A
Power Saving Mode
< 0.12A < 0.06A
Efficiency (Typ.)
89% 91%
On Mode @ Save Mode
< 0.12A < 0.06A
On Mode @ No Load Mode
< 0.5A < 0.4A
Output
Continuous Output Power
Over Rated Power
(3 Min.)
230 W
200 W
Peak Power (3 Sec.)
250 W
Frequency
50 / 60 Hz ± 0.5% (Dip Switch Selectable)
Output Voltage
100 / 110 / 115 / 120 VAC ± 5%
(Dip Switch Selectable)
Short-Circuit Protection
2 seconds and restart 3 times shutdown
Output Waveform
Pure Sine Wave (THD < 3%@ Normal Load)
Protection
Input Over-Voltage
Protection
16.0VDC ± 3% 32.0VDC ± 3%
Input Under-Voltage
Protection
10.0VDC ± 3% 20.0VDC ± 3%
BAT. Low Shutdown
10.0VDC ± 3%
20.0VDC ± 3%
BAT. Low Alarm
10.5VDC ± 3%
21.0VDC ± 3%
BAT. Low Restart
12.5VDC ± 3%
25.0VDC ± 3%
BAT. High Alarm
15.5VDC ± 3%
31.0VDC ± 3%
BAT. High Shutdown
16.0VDC ± 3%
32.0VDC ± 3%
BAT. High Restart
14.5VDC ± 3%
29.0VDC ± 3%
Environment
Working Temp.
-20˚C ~ 60˚C
Storage Temp.
-30˚C ~ 70˚C
Working Humidity
10~95% RH, non condensing
Safety &
EMC
Safety Standards
----
EMC standards Certified FCC class B
E-mark
----
Others
Dimension(WxHxD)
150 mm X 68mm X187 mm
Weight
1.6kg
Remote Control
CR-8 (optional)
Cooling
Temperature & Load Controlled cooling Fan
Table 1. GP-ISW-200 Specification
Note：
This test condition is normal DC input and temperature 25˚C
2.5 VOLTAGE AND TEMPERATURE PERFORMANCE
Surge Power (3 Sec.)
GP-SWR-A
GENERAL INFORMATION

[page 14] | gpelectric.com
7
2-3-3. GP400 Specification
Electrical
Specification
Model No.
Item
GP400-112
GP400-124
GP400-148
Input
Voltage
12VDC
24VDC
48VDC
Voltage Range
10.5~16.0VDC
21.0~32.0VDC
42.0~64.0VDC
No Load Current
<1A @12VDC
<0.5A @24VDC
<0.25A @48VDC
Power Saving Mode
<0.2A @12VDC
<0.1A @24VDC
<0.05A @48VDC
Efficiency (Typ.)
88%
89%
90%
On Mode @ Save Mode
<1A @12VDC
<0.5A @24VDC
<0.25A @48VDC
On Mode @ No Load Mode
<0.2A @12VDC
<0.1A @24VDC
<0.05A @48VDC
Output
Continuous Output Power
400 W(± 3%)
Max. Output Power (1Min.)
> 400 W~460 W(100%~115%)
Surge Power (1Sec.)
< 800 W
Frequency
50 / 60 Hz ± 0.5% (Dip Switch Selectable)
Output Voltage
100 / 110 / 115 / 120 VAC ± 5% (Dip Switch Selectable)
Short-Circuit Protection
1 Sec Shutdown
Output Waveform

Pure Sine Wave (THD < 5%@ Normal Load)
Protection
Input Over-Voltage
Protection
16.0 ± 0.3VDC 32.0 ± 0.5VDC 64.0 ± 1.0VDC
Input Under-Voltage
Protection
10.5 ± 0.3VDC 21.0 ± 0.5VDC 42.0 ± 1.0VDC
BAT. Low Shutdown
10.5 ± 0.3VDC
21.0 ± 0.5VDC
42.0 ± 1.0VDC
BAT. Low Alarm
10.5 ± 0.3VDC
21.0 ± 0.5VDC
42.0 ± 1.0VDC
BAT. Low Restart
14.5V± 0.3V
28.0 ± 0.5VDC
56.0 ± 0.5VDC
BAT. High Shutdown
16.0 ± 0.3VDC
32.0 ± 0.3VDC
64.0 ± 0.3VDC
BAT. High Restart
12.5V± 0.3V
25.0V± 0.3V
50.0± 0.3V
Environment
Working Temp.

-20
℃
~40
℃
Storage Temp.
-30
℃
~70
℃
Working Humidity
10~95% RH, non-condensing
Safety &
EMC
Safety Standards Certified UL 458
(UL only for GFCI receptacles)
----
EMC standards
Certified FCC class B
E-mark
----
Others
Dimension(WxHxD)
150 mm X 68mm X187 mm
Weight
1.256kg
Remote Control
CR-8 (optional)
Cooling
Temperature & Load Controlled cooling Fan
Table 4. GP400 for output 100/110/115/120 VAC specification
Note：
：
Normal load Condition：Vin =12.5V/25V/50V, Vo=100/110/115/120 VAC 80% load
(PF=1.0)
Voltage performance：Please refer to Figure 2
Temperature performance：Please refer to Figure 3
GP-ISW-400 Specification
Electrical
Specification
Model No.
Item
GP-ISW-400-12 GP-ISW-400-24
Input
Voltage
12VDC 24VDC
Voltage Range
10.5~16.0VDC 2 1.0~32.0VDC
No Load Current
< 1A @12VDC < 0.5A @24VDC
< 1A @12VDC < 0.5A @24VDC
< 0.2A @12VDC < 0.1A @24VDC
< 0.2A @12VDC < 0.1A @24VDC
Power Saving Mode
Efficiency (Typ.)
88% 89%
On Mode @ Save Mode
On Mode @ No Load Mode
Output
Continuous Output Power
Over Rated Power
(1Min.) > 400 W~460 W (100%~115%)
400 W (± 3%)
Peak Power (3 Sec.)
800 W
Frequency
50 / 60 Hz ± 0.5% (Dip Switch Selectable)
Output Voltage
100 / 110 / 115 / 120 VAC ± 5%
(Dip Switch Selectable)
Short-Circuit Protection
1 second shutdown
Output Waveform
Pure Sine Wave (THD < 5%@ Normal Load)
Protection
Input Over-Voltage
Protection
16.0VDC ± 0.3VDC 32.0 ± 0.5VDC
Input Under-Voltage
Protection
10.5VDC ± 0.3VDC 21.0VDC ± 0.5VDC
BAT. Low Shutdown
10.5VDC ± 0.3VDC
21.0VDC ± 0.5VDC
BAT. Low Alarm
10.5VDC ± 0.3VDC
21.0VDC ± 0.5VDC
BAT. Low Restart
14.5VDC ± 0.3V
28.0VDC ± 0.5VDC
BAT. High Shutdown
16.0 ± 0.3V
32.0VDC ± 0.3VDC
BAT. High Restart
12.5VDC ± 0.3V
25.0VDC ± 0.3V
Environment
Working Temp.
-20˚C ~ 40˚C
Storage Temp.
-30˚C ~ 70˚C
Working Humidity
10~95% RH, non-condensing
Safety &
EMC
Safety Standards
EMC standards Certified FCC class B
E-mark
----
Others
Dimension(WxHxD)
150 mm X 68mm X187 mm
Weight
1.3kg
Remote Control
CR-8 (optional)
Cooling
Temperature & Load Controlled cooling Fan
Table 2. GP-ISW-400 for output 100/110/115/120 VAC Specification
Certified UL 458
(UL only for GFCI receptacles)
10
GP-SWR-A or GP-ISW-R
GENERAL INFORMATION

gpelectric.com | [page 15]
ON / OFF / Remote Main Switch
LED Indicator
AC Output
Function Switch
3
4
2
1
ON / OFF / Remote Main Switch 
The 3-stage switch is for turning on, turning off and remote mode.
LED Indicator 
Inverter status to display fault condition
Figure 1. GP-ISW-200 & 400 front panel view
3. INSTALLATION
3.1 TYPICAL SYSTEM OVERVIEW
The following diagrams show how the GP-ISW-Inverter and GP-ISW-R are typically installed in a
mobile RV application. The diagrams show where the remote and Inverter are installed and how
the mobile power system can be integrated with a Go Power! RV Solar Kit (sold separately by Go
Power, please contact an authorized dealer directly).
3. INSTALLATION

[page 16] | gpelectric.com
3.2 MOUNTING REQUIREMENTS
1. TEMPERATURE
Make sure the GP-ISW is installed in a location where the normal air temperature is between -20°C
and 40°C. The cooler the better within this range.
2. MOISTURE
Do not allow water or other uids to come into contact with the GP-ISW. Do not expose to rain,
snow or water.
3. VENTILATION
For optimum Inverter performance the GP-ISW must be installed so the front and rear air vents
are not blocked or obstructed in any way. Do not install the GP-ISW in an area with limited air
ow. Allow as much space around the Inverter as possible, leaving at least 4 inches of airspace
clearance around all ventilation areas.
CAUTION! Equipment Damage. Do not mount the GP-ISW in a zero clearance com-
partment. Do not cover the ventilation openings. Overheating and mechanical failure
may occur.
4. FIRE
Install the GP-ISW away from the battery bank, away from any ammable or combustible material
(paper, ammable liquids, gasoline, cloths) that may be ignited by heat, sparks or ames. Never
place the Inverter directly above the battery bank - gases from the batteries will corrode and
damage the Inverter, never allow battery acid to drip onto the unit.
5. ACCESSIBILITY / ORIENTATION
Do not block access to the GP-ISW remote control access port, status LEDs and the On/Off switch.
Allow enough room to access the AC and DC wiring terminals and connections as they will need
to be checked and tightened periodically. The GP-ISW must be installed in one of the approved
mounting orientations detailed on page 20. DO NOT MOUNT VERTICALLY.
6. CLEAN
The GP-ISW should be installed in a location which is clean and limits the introduction of dust,
fumes, insects or rodents which could enter and block the Inverter ventilation openings.
7. PROXIMITY TO BATTERY BANK
The GP-ISW should be located as close to the batteries as possible but not within the same
compartment. The length and size of the DC Cables will affect performance. Long DC wires tend
to lose efciency and reduce the overall performance of the Inverter/Charger. Use the DC cables
recommended on page 23.
INSTALLATION

gpelectric.com | [page 17]
HORIZONTAL WALL MOUNT, BASE DOWN
HORIZONTAL WALL MOUNT, BASE DOWN
HORIZONTAL MOUNT, BASE DOWN
HORIZONTAL MOUNT, BASE UP
VERTICAL MOUNT, DO NOT MOUNT THE
GP-ISW IN THIS CONFIGURATION
*GP-ISW model may not be exactly as shown
INSTALLATION

[page 18] | gpelectric.com
3.3 DC WIRING
ON
OFF
Sub Panel
ISW Remote Control (Optional)
Solar Panel
Solar Panel
Solar Charge
Controller
Refrigerator
Vent Cover
or
Cable Entry Plate
Fuse
Battery Disconnect Switch
(not required if circuit breaker is used)
Battery Bank
Fuse or Circuit Breaker
GP-ISW
To Battery
Bank
To Battery
Bank
DC Panel
Earth Ground (RV Ground)
AC
Loads
The following points must be observed for the DC Wiring.
• The DC positive and negative cables connected to the GP-ISW from the battery bank
should be linked together with zip ties or electrical tape every 6”. This helps to
reduce radio frequency interference and reduces the effects of inductance both of
which improve the Inverter waveform and reduces the wear of the Inverters lter
capacitors.
• To ensure optimum Inverter performance the number of connections between the
battery bank and the GP-ISW unit should be minimized except from the over-current
and battery disconnect devices. All additional connection points will cause extra
voltage drops.
• The Battery bank voltage must match the DC voltage required by the GP-ISW, which
is 12V or 24V (note that the Inverter is either 12V or 24V, and is not switchable).
• All DC cable wire terminations should use a crimped and sealed copper ring terminal lugs.
• Make sure all cables have a smooth bend radius and no kinks are present.
• Color code all DC Cables coming to / from the battery bank. Use colored electrical tape or
heat shrink tubing. Red for positive (+), Black for negative (-) and Green for DC ground.
INSTALLATION

gpelectric.com | [page 19]
3.3.1 DC WIRING SIZING
The distance between the battery bank and the GP-ISW should be as short as possible to achieve
maximum efciency and to reduce re hazards. The size of the cable should be thick enough to limit
the voltage drop to less than 2% when carrying the maximum input current to prevent frequent low-
input voltage warnings and shutdown. Only use high quality copper wire.
For greater efciency, the cables should be as short as possible. The combined cable length should be
no more than 10ft (3m). Keeping your wire runs as short as possible helps to prevent: low voltage
shutdowns and nuisance tripping of the DC breaker because of increased current draw. The table
below shows the recommended DC cable size, fuses/circuit breakers and DC grounding cable sizes
for the GP-ISW (Note: these values are correct for cables in free air, not conduit)
Model Wire AWG Inline Fuse / Circuit Breaker
GP-ISW200-12 #6 F-110A
GP-ISW200-24 #6 F-110A
GP-ISW400-12 #6 F-110A
GP-ISW400-24 #6 F-110A
GP-ISW700-12 #6 F-110A
GP-ISW700-24 #10 F-110A
GP-ISW1000-12 #4 F-110A
GP-ISW1000-24 #8 F-110A
GP-ISW1500-12 #2 F-200A
GP-ISW1500-24 #6 F-200A
GP-ISW2000-12 #2/0 F-300A
GP-ISW2000-24 #4 F-200A
GP-ISW3000-12 #4/0 F-400A
GP-ISW3000-24 #2 F-300A
GP-ISW4000-24 #2/0 F-400A
INSTALLATION

[page 20] | gpelectric.com
3.3.2 DC OVERCURRENT PROTECTION AND DC DISCONNECT
Batteries are capable of providing very large currents in case of a short circuit, if this occurs with
no DC overcurrent protection, it will result in overheating and melting of the cables and possibly
serious injury and/or re.
DC overcurrent protection is not included with the GP-ISW Inverters. It must be installed between
the Inverter and battery bank for safety reasons and to comply with code regulations.
The fuse should be as close to the positive battery terminal as possible. Use Bussmann ANN Class
T series fuses (will also require Fuse Block 4164) or equivalent. Ideally, the fuse/circuit breaker
should be installed within 18” (45cm) of the battery. The fuse required for DC Cable lengths up to
10ft is detailed in the above table.
In all installations a battery disconnect switch is required, if you install a circuit breaker for overcurrent
protection this will sufce as a disconnect switch. If you install a fuse for overcurrent protection
then a separate disconnect switch will need to be installed.
3.3.3 PREPARING THE DC CABLES
Go Power! supplies 2 ring lugs with the GP-ISW which can be used for the Inverter end of the DC
Cables. Source the correct ring terminals for the batteries you are using.
• Cut the negative and positive cables to the required length.
• Strip off enough insulation so you can install the ring lugs provided.
• Use the correct crimp connector to install the ring lugs.
• Attach the connectors to both ends of both cables. Make sure no stray wire strands
protrude from the connectors.
3.3.4 DC CABLE CONNECTIONS
When installing the battery cable ring lug onto the GP-ISW DC terminal and the battery post - do not
put anything between the ring lug and the metal surface. Incorrectly installed hardware causes a
high resistance connection which could lead to poor Inverter/Charger performance and may melt the
cable and terminal connections. Tighten the terminal connections securely (torque to 9 – 10 ft-lbs,
11.7 – 13 Nm) and periodically check the connections to make sure they remain tight and secure.
To help prevent seizing and corrosion around the terminals the use of an anti-seize lubricant is
INSTALLATION