Dc Wire Gauge & Fusing - Sensata dimensions 12NP18 Owner's Manual

DC Wire Gauge & Fusing
An "Inverter Cable Kit" (positive cable, negative cable, and proper fuse) is needed to connect the inverter to a
battery bank. An 8 AWG single-strand cable is also recommended to connect the inverter's bonding lug to ground.
The inverter cable length and the size of the inverter will determine the cable gauge and the fuse size to use. The
maximum recommended length for the inverter cable is 15 feet. The cable must be fused within 18 inches from the
positive (+) terminal of the battery.
Cross reference the inverter model and the estimated cable length in the table below to determine the proper cable
gauge and fuse size. An inverter cable kit designed to SAE guidelines can be purchased directly from our factory –
call for options.
Min. Cable and Max. Fusing Guide for 3% Voltage Drop — 100% Duty Rating
Full
Inverter
Load
Model
ADC
12NP18 188 3/0 AWG, 500 A Fuse
12NP20 214 4/0 AWG, 500 A Fuse
12NP24 269 2X 2/0 AWG, 2X 400 A Fuse 2X 2/0 AWG, 2X 400 A Fuse 2X 2/0 AWG, 2X 400 A Fuse
12NP30 315 2X 2/0 AWG, 2X 400 A Fuse 2X 2/0 AWG, 2X 400 A Fuse 2X 2/0 AWG, 2X 400 A Fuse
Min. Cable and Max. Fusing Guide for 3% Voltage Drop — 50% Duty Rating
Full
Inverter
Load
Model
ADC
12NP18 188
12NP20 214 1/0 AWG, 350 A Fuse
12NP24 269 1/0 AWG, 350 A Fuse
12NP30 315 2/0 AWG, 400 A Fuse
NOTE: 100% duty rating assumes the inverter is operating at its full rated output power continuously for at least
thirty minutes. The 50% duty rating assumes that the inverter is operating at its full rated output power for up to
15 minutes and then operating with a load less than 25% of its full rating for at least 15 minutes before returning
to full power and repeating. Alternatively, it can also operate at 50% of its rated output power continuously. Table
values assume operation in an ambient temperature of 25°C (77°F). For higher ambient temperatures, additional
derating may be required (i.e. may need to use a larger cable size).
NOTE: The DC input terminals will only accept one cable with the provided cover installed. Cover not required for
use.
Make an "Inverter Cable Kit"
1. Use stranded copper cables in all cases.
2. Use SGX cross-linked polyurethane insulation type that complies with the high temperature insulation
requirements (125°C) of SAE J-1127 and vehicle manufacturer requirements.
Page 12
Inverter to Battery Estimated Cable Length in Feet
1 to 5 feet
@ 25°C (77°F)
Inverter to Battery Estimated Cable Length in Feet
1 to 5 feet
@ 25°C (77°F)
2 AWG, 250 A Fuse
Table 2 DC Wire Gauge & Fusing Guide
6 to 10 feet
@ 25°C (77°F)
4/0 AWG, 500 A Fuse
2X 2/0 AWG, 2X 400 A Fuse 2X 2/0 AWG, 2X 400 A Fuse
6 to 10 feet
@ 25°C (77°F)
1/0 AWG, 350 A Fuse
2/0 AWG, 400 A Fuse
2/0 AWG, 400 A Fuse
3/0 AWG, 500 A Fuse
12NP Manual
11 to 15 feet
@ 25°C (77°F)
4/0 AWG, 500 A Fuse
11 to 15 feet
@ 25°C (77°F)
2/0 AWG, 400 A Fuse
3/0 AWG, 500 A Fuse
3/0 AWG, 500 A Fuse
4/0 AWG, 500 A Fuse