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Machinery, Trailers, Toyhaulers and Motorhomes => Trailers, Toyhaulers and Motorhomes => Topic started by: Carlriddle on May 23, 2014, 10:04:49 AM

Title: Trailer Electrical
Post by: Carlriddle on May 23, 2014, 10:04:49 AM: Ok, I've installed an inverter in trailer to run 120v from the 12v battery. Battery is charged thru 7-way. 7 way is limited to 30A (I think). If the inverter pull more than 30a, will it pop fuse or just pull excess from trailer battery. When fridge kicks on its 4A at 120v so about 40A at 12v.

What say you??
Title: Re: Trailer Electrical
Post by: WelderPat on May 23, 2014, 10:29:20 AM: Put a battery in the trailer.
Charge it from 7 pin.
Title: Re: Trailer Electrical
Post by: Carlriddle on May 23, 2014, 10:58:24 AM: Quote from: WelderPat on May 23, 2014, 10:29:20 AM
Put a battery in the trailer.
Charge it from 7 pin.

Thats what I have set up. Just didnt want to pop fuse on 7 pin if inverter called for more.
Title: Re: Trailer Electrical
Post by: fabr on May 23, 2014, 11:13:48 AM: Depends on how you are wired in. Is the inverter connected directly to the battery? Is battery in the trailer? I assume so. If that is the case you are OK. Let truck alternator charge battery thru 7 pin.
Title: Re: Trailer Electrical
Post by: Carlriddle on May 23, 2014, 12:26:20 PM: Quote from: fabr on May 23, 2014, 11:13:48 AM
Depends on how you are wired in. Is the inverter connected directly to the battery? Is battery in the trailer? I assume so. If that is the case you are OK. Let truck alternator charge battery thru 7 pin.

Yes. Yes. Yes. My head hurts from this, so I'm loading tomm, heading out Sun and see your ass's in sand Mon just after lunch........................................if food dont make it I'll buy more. Aslong as I make it by 6pm
Title: Re: Trailer Electrical
Post by: fastcorvairs on May 23, 2014, 12:38:14 PM: Quote from: Carlriddle on May 23, 2014, 12:26:20 PM
Yes. Yes. Yes. My head hurts from this, so I'm loading tomm, heading out Sun and see your ass's in sand Mon just after lunch........................................if food dont make it I'll buy more. Aslong as I make it by 6pm

Best to put one way switch in line with the seven pin to truck. Would not want to run truck batt's down to.
Title: Re: Trailer Electrical
Post by: Lance-W on May 23, 2014, 12:45:08 PM: Or just unplug the 7 pin when your parked in camp................ Seen more than one tow vehicle with a dead battery because the people forgot this..........
Title: Re: Trailer Electrical
Post by: fabr on May 23, 2014, 01:03:17 PM: Quote from: Lance-W on May 23, 2014, 12:45:08 PM
Or just unplug the 7 pin when your parked in camp................ Seen more than one tow vehicle with a dead battery because the people forgot this..........
That's why I suggest the trailer have it's own battery with a battery isolator to do it right. That way you can charge both batteries from the truck and not worry about discharging truck battery even if trailer battery completely discharges.
Title: Re: Trailer Electrical
Post by: Carlriddle on May 23, 2014, 01:26:30 PM: 7way charge wire is dead with ing off. But I unplug when parked for night.
Title: Re: Trailer Electrical
Post by: fabr on May 23, 2014, 01:31:12 PM: It'll likely back feed thru alternator-maybe.
Title: Re: Trailer Electrical
Post by: Carlriddle on May 23, 2014, 04:13:02 PM: If my beer is cold mon when I arrive then its a success. Otherwise :7