Designing Your Installation
3–7
Calculating Size of DC Input Cables for XPower 1200 Plus
Refer to
Table 3-1
to plan the DC input cabling for your particular
application:
•
Keep all cables as short as possible, and ensure that each cable
between the inverter and the battery is no longer than 5 feet (1.5 m).
•
Do not use aluminum cable. It has about 1/3 more resistance than
copper cable of the same size, and it is difficult to make good, low-
resistance connections to aluminum wire.
•
Xantrex recommends that you use oil resistant cable.
Table 3-1 Recommended DC Input Wire Sizes & Lengths: XPower
1200 Plus
RV
1
(Recreational Vehicle) and Marine
2
1. Based on US National Electrical Code NFPA70, Article 551 and Table 310-
17, 90C cables located outside of engine spaces.
2. Based on ABYC (American Boat and Yacht Council) Recommended Practice
E-9, Table IV, 75C cables located outside of engine spaces, maximum 3% volt-
age drop.
Cable length:
Battery to inverter
(one way)
Minimum Cable Size
Maximum Battery
Fuse Size
2 feet (0.6 m)
No. 2 AWG
150 Adc
4 feet (1.2 m)
No. 2 AWG
150 Adc
5 feet (1.5 m)
No. 2 AWG
150 Adc
Note
: Never use a cable longer than 5 feet (1.5 m) with the XPower
1200 Plus. Appropriately sized cable can be bought at a welding supply
house or a marine supply store.
