Circuit Breaker From Battery to Converter - Fiberglass RV

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Old 06-25-2010, 06:45 PM   #1
Trailer: Bigfoot 13.5 ft
Posts: 88
I am planning my electrical layout for my complete renovation of a Lil Bigfoot and need some help with protection of my new converter from the battery. I have seen where it is recommended to install a breaker in the positive line running from the battery to the converter. What type of breaker is recommended and what size? I'll be running mainly interior lights, radio, and possibly a DC TV/DVD in the future. Also, where is the best place to palce this breaker? Shall I put it in the fiberglass battery compartment in the front of the trailer or place it inside the trailer? If outside, is one of the marine grade breakers recommended?


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Old 06-25-2010, 07:26 PM   #2
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Name: Myron
Trailer: 19' Escape
Posts: 651
My battery is in a box behind the propane on the tongue and my new in-line 30 amp fuse is just inside the shell, accessable through curb side front hatch. My converter is below the furnace in front of street side tire well. Thought about putting the fuse inside the battery box but the original location was inside. Decided to stick with that.

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Old 06-25-2010, 08:02 PM   #3
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Bill MacDermod's Avatar
Name: William
Trailer: 1999 17 ft Casita Spirit Deluxe ('Inn EggsIsle')
Posts: 611
its an automatic resetting circuit breaker, about $5.00 bucks at any auto parts store
Love being Inneggsile
heading sloowly up the eastcoast to our next 2 month (Aug and Sept) camp hosting gig at Camden Hills State Park in Maine
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Old 06-25-2010, 08:04 PM   #4
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Name: Peter
Trailer: 2005 19 ft Scamp 19 ft 5th Wheel
Posts: 1,519
The correct way to wire your battery up is to install two fuses, one, higher value fuse (say, 25 Amps) at the battery and a second, lower value fuse (say, 20 Amps) at the converter/fuse box. The extra fuse at the battery end protects your electrical system should a short occur between the battery and fuse panel, and using a lower value fuse at the panel makes it so, in all but one case, the fuse at the fuse panel where you're more likely to go hunting for a blown fuse will be the one to blow if something electrical goes awry.

You should also put a fuse at each end of the charge line on your trailer hookup, a high-value fuse at the tow vehicle battery end, and a lower value fuse at the trailer end.
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