DC power removal

[xrvr]

Originally Posted by AnnArborBob

Sorry, I believe that this is incorrect. Trailer brakes work off the trailer battery. The trailer battery can get a small amount of charge from the tow vehicle when it is hooked up (typically 5 to 7 AH.) And while the tow vehicle actuates the trailer brakes via the seven-pin connector, the power for the trailer brakes comes from the trailer's battery. You will notice that many other types of trailers (i.e., boat & utility) that require trailer brakes will have a small on-board battery for the brakes.

I stand by my comment. The small battery on boattrailers is for the breakaway switch in order to be legal. Good camping

[Drathaar]

Originally Posted by avionstream

I stand by my comment. The small battery on boattrailers is for the breakaway switch in order to be legal. Good camping

That depends on the trailer. Surge brakes do not require a battery. Electric and electric over hydraulic should have a battery.

Back to the original question, I think you've tumbled to the answer that keeping the 12 volt system is the wise way to go. You asked about guides for RV wiring. Google it, there's a lot of info out there, both AC and DC.

[xrvr]

Correct but the poster commented on small batteries in other types of trailers, not those with surge brakes.

[Sirwalshalot]

Would it be a bad idea to have everything 120v with a converter for battery backup?

[lewster]

You would need an INVERTER for that purpose, not a converter. It would have to be sized to be capable of operating all of your 120VAC loads, along with an appropriately sized battery bank.

If you then have a battery bank that you only use for emergency, you will also need a charging system for same. An inverter/charger will do both nicely and units like those from Magnum Energy will also pass thru all of your shore power to your 120 VAC loads, along with keeping your batteries ready if/when you need them.


Lew Farber
RVIA/RVDA Nationally Certified Master Tech
ABYC Certified Master Marine Electrician
Master Tech Energy Systems, Inc.
AM Solar Certified Installation Center*AMS Lithium Batteries
Lifeline AGM Batteries**Magnum Inverters
541-490-6357

[J. Morgan]

Picture one is my trailer on shore power, picture two is my trailer on inverter.....




(Excuse my mess please)


Brevi tempore!