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Old 04-30-2016, 02:56 PM   #1
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1975 Argosy 28
Springville , Alabama
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Wire size

This is how I see it. 3 systems.
1. Running/towing = 12 gauge
2. 120v = 12 gauge
3. 12v = 13 gauge

Did I miss anything?
I'm will mostly use shore power/inverter. Appliances 120v. WH and WP 12v.
Thanks
Matt
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Old 04-30-2016, 03:03 PM   #2
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!2V wire from battery to inverter will have to be 4ga or better depending on size of inverter and distance.
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Old 04-30-2016, 10:32 PM   #3
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If you are refering to the trailer connector (7 pin) you can purchase an 8' long molded cable and run it to your fuse box/internal towing lights, the cable has different gauges depending on what wire is which, the heaviest is 10 gauges for battery and ground. They run about $41.

Don't know what you mean about 13 gauge. For shore power I would assume you are using the trailer's cord, which is setup for 30 Amps and connecting the shore power cord to the generator through an adapter, It would be advisable to verify ground with what ever setup you decide to use.

Good to remember NEC (national electric code) was developed to stop house fires, it lists minimums, one can always larger wire. The lower the supply voltage the more important it is to factor in the length of the wire too.
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Old 05-01-2016, 02:49 AM   #4
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#10 wire is rated for 30 amp service which is what the trailer will have coming to the fuse/circuit breaker box from the power inlet of the trailer. #6 wire is used for the 50 amp service of trailers with two aircondioners. The run from an inverter to the battery can range from 2-0 to 4-0 copper and can have a 400 amp or larger fuse.
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