So I am new to travel trailers and this is my breaker box... can someone explain what the GFI one is and general purpose and if im dry camping do any of these need to be on if im runing off 12v?

GFI in simple terms protects you against shock when in "wet locations". Just like there should be one in your bathroom and your kitchen. The circuit starts at the GFI (outlet with 2 buttons on it, test/reset) then goes to the remaining outlets other than microwave, air conditioner, water heater. As far as I know, all breakers to remain on when running on battery power. There should be separate fuses for these circuits as well.Hope this helps!!Also get a couple extra fuses like the ones installed incase one of them blows!

ALL electrical items within (and on ouside) of RV unit are either 110/120 Volt system or 12 Volt based system. Some appliances (like fridge) can be either based. 110/120 Volt GFCI circuit breakers are located in wet zone areas - like bathroom and outside outlets. For cool diagram of both systems, surf: - Click Here - Hope this helps.

What I see on the AC panel schedule is Circuit 1 feeds non-GFCI protected circuits This could feed the refer.Circuit 2 feeds GFCI receptacle circuitCircuit 3 feeds the MicrowaveCircuit 4 feeds the Air ConditionerCircuit 5 feeds the 120 volt electrical element in water heater.Note on left side is unmarked 12 volt DC panel schedule. I would suggest trying to label the circuits. Note there is two busses. Buss A feeds off converter only, buss B feeds from both converter and battery

Is their a breaker or fuse for the forced air furnace.... I know it has a 12v blower...

Those AC breakers would have no effect with only 12V power from your batteries. I think most just leave them on all the time, I certainly do.

can someone help explain the fuse panel to me? | Good Sam Community

18 Replies

wickedstang03
Explorer
Apr 10, 2015
Any know why I cant view photos I tried to change my preferencees but when I go to that page it says the page you are trying to reach has had an unexpected error
myredracer
Explorer II
Apr 10, 2015
"B" shows no fuse(s) associated with it and is for the incoming positive #8 conductors from the battery and converter. The battery connection at "B" would be connected to a mini circuit breaker in the A-frame near the battery. "A" shows all the fuses for the load circuits but the factory was lazy in not labeling them.

To label the DC fuse circuits, you'll need to systematically turn fuses on and off and see what fuse controls what load(s).

You have a Magnetek 80D which would look similar to this with "B" being at the top of the photo:

The panel would be wired like this:
kearlms
Explorer
Apr 10, 2015
I usually leave all my 120's on with the exception of the water heater. This way I dont flip the switch and accidentally turn on the water heater element and blow it if there is no water. The gas and 12v control board work fine with this breaker off.
enblethen
Nomad
Apr 10, 2015
I cannot see all the fuses holders. Some have a buss B for unfiltered power.
You could be correct as I also cannot see complete power connections.
Ozlander
Explorer
Apr 10, 2015
Some of you guys are all wet. There is no Buss A and Buss B.
It says right on the placard that all fuses 1-11 are on Lug A and Lug B is for the battery lead.
wickedstang03
Explorer
Apr 10, 2015
that all sounds like Chinese to me lol I think I remember the guy who I bought it from say he dry camped with the furnace working for almost a week befor he needed charging
enblethen
Nomad
Apr 10, 2015
That is true prichardson, however the label on the unit says they are not.
I would say is should be A could be filtered and B is not.
prichardson
Explorer
Apr 10, 2015
My bet is that Buss A and B are common to each other and are used to make the + connection between the converter the battery and the fuse panel. This could be confirmed with an ohm meter.
Bird_Freak
Explorer II
Apr 10, 2015
wickedstang03 wrote:
How would I know if the furnace was put on buss A
See if it runs without shore power. If it works your good to go.
enblethen
Nomad
Apr 10, 2015
You need to locate the wire that goes to the furnace. Might be the same color in panel and furnace.
Then look where it is attached on DC buss work.
If not the same color or you can't find it, Use a test light to verify whether there is power at the furnace. If power is present, go to DC panel and start removing fuses until power at the furnace goes away. then mark it.