Electrical system is dead in T@B in Battery mode

Terry

Came back from boondocking and upon return the electrical system does not work on battery.  I took the battery to Auto zone and the battery checked out fine.  reinstalled the battery and still nothing on Battery mode in camper electrical system.  Everything lights up in camper when plugged into electrical outlet and on electricity mode.  I assume it must be a fuse or breaker - probably a fuse from battery to the rest of the trailer resulting in no power to the trailer.  Is there a diagram somewhere indicating which fuse to replace first - I don't see it in the instructions provided by NuCamp  

jkjenn

Terry said:

Came back from boondocking and upon return the electrical system does not work on battery.  I took the battery to Auto zone and the battery checked out fine.  reinstalled the battery and still nothing on Battery mode in camper electrical system.  Everything lights up in camper when plugged into electrical outlet and on electricity mode.  I assume it must be a fuse or breaker - probably a fuse from battery to the rest of the trailer resulting in no power to the trailer.  Is there a diagram somewhere indicating which fuse to replace first - I don't see it in the instructions provided by NuCamp  

There is a good chance it would be the fuse right at the battery. Should be a 30amp fuse. Someti.es dealers put in a 20 amp fuse. If they did, replace it with a 30 amp fuse.

You do have the battery switch turned to on, right?

MuttonChops

Review the forum section 'User Manuals/PDF files/Videos & Resources'  depending on which T@B model you have a diagram (or very similar one) maybe in the files.

https://tab-rv.vanillacommunity.com/categories/video-resources 

For your specific issue, check three fuse locations:
First, in-line fuse holder at Battery positive terminal
Second, WFCO Power Center 30-Amp Battery fuse . . . Red Box in picture below
Third, WFCO Power Center reverse protection fuse (fuse below red box)

Side Note:
       House fuses 1-6 have an LED that turns-on when the fuse is bad.
       The Battery fuse (red box) and Reverse Protectin fuse do not have indicator LEDs

ScottG

@Terry, you might give this recent discussion a look. There are several potential places in the system where the battery can get disconnected from the converter. Please report back what you find.

Tundra57

If you have a tab400 2019 the battery switch has a resettable trip behind it. That may have tripped.

gspdx

Tundra57 said:

If you have a tab400 2019 the battery switch has a resettable trip behind it. That may have tripped.

That one happened to me while camping.  Got to our location, unhooked, and no power.  Plugged back into the truck and everything worked.  So in this situation it seems like it has to be something between the battery and the WFCO.  The manual didn't say anything about that device that I could find and I wasn't sure how it worked.  But I pressed the lever on it until it clicked into place and all was well.

Denny16

That little device next to the battery switch on the TaB400 is a circuit breaker.  It is also easy to bump on some trailers, switching it off.  When battery power is list, this is the first thing to check.
cheers

gspdx

Denny16 said:

That little device next to the battery switch on the TaB400 is a circuit breaker.  It is also easy to bump on some trailers, switching it off.  When battery power is list, this is the first thing to check.
cheers

That is exactly what happened to me.  It tripped due to being bumped - not due to an electrical overload - which seems a little odd to mount it in a location where that is so easy.  But now I know!