Please look at my wiring and tell me if looks safe

[Brian556]

I installed a 12V Walmart deep cell battery on the front of my trailer and wired in some basic lighting into a 6 slot fuse block. Can you guys take a look at it and let me know if you see anything sketchy?
Summary:
I am using a GFCI breaker cable as the main input to the trailer for all things 120V. That gets split out to my 7amp 8K window A/C unit, battery charger, and coffee maker
I have an automatic battery charger that I chopped the ends off of and tied it into my fuse panel on its own 15amp fuse to back feed the D/C system and hopefully charge the battery. It switches from 2 amp or 12 amp and has an automatic charging function. I leave it on 2 amps at night and switch it to 12 amp when I'm using the lights. Do you think this will be ok? Why would people use the 40 amp RV ones? should I swap it out?

Thanks for your advise!!!

[CarlLaFong]

I would put some grommets where the wires exit the J box

[Brian556]

I would put some grommets where the wires exit the J box

Will do, thanks for the advice. Any suggestions how to handle where the cable enters through the wall? I hate to have this huge hole with a flimsy weather box on the outside.
Also, do you need a fuse between the battery and the fuse panel? What size?

Thanks!

[H.A.]

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[Brian556]

I would put some grommets where the wires exit the J box

Agree with gromets or romex type connector where the conductors exit the 4sq. box. At least thats what electrical code calls for.
But provided there is NO movement of the conductors to potentially chafe upon the sheetmetal edges, it would be OK.
(no grommets done all the time by amateurs, in the overall big picture rarely a problem except it screams "done by an amateur wanker wanna-bee electrician.")

Do you plan some kind of cover on the DC distribution/fuse panel ?
Bad stuff will happen if somthing metallic falls against it !!

Here is one method of sealing the pass thru of your mains power input cable.
https://www.pegasusautoracing.com/produ ... t=4336-005
Were it my build, I would probably fabricate something similar myself of a suitable plastic sheet.

Awesome! Thanks for the insight and the tips.