380 Amps of what?

[austingta]

My 2500 HD has two alternators with an advertised output of 380 Amps DC. My truck has a fuse that is rated at 30 A powering the 12VDC output wire on the trailer wiring plug.

If I want to utilize the full capacity or anywhere near it, I presume I have to run a very large wire back to the trailer 12VDC wire to power the breakaway charger (which doesn't need much) and/or charge my batteries at an efficient rate and all the electrical items I may need to power through the inverter.

Advice ?

[deltabravo]

I have dual alternators in my dually. No idea why the dealer ordered it that way.

I did some heavy duty charging upgrades to power my truck camper while driving:







Andersen connectors and 4AWG wiring.

[rjstractor]

In an RV application it would be next to impossible to utilize your full alternator output. If you had an extreme need, like to run your trailer's AC while on the road, you would want to direct-wire a large inverter (minimum 2000 watt 3000 surge) to your truck battery and run a 12 gauge minimum extension cord to your trailer. Otherwise I see no practical way to use that kind of capacity in your application.

[austingta]

That is a funny notion...a government agency spec'ing a Denali ambulance!

[drittal]

The dual alternator option is more directed towards up fitters for uses like ambulance etc...

To make use of that much amperage, which you will never do, you would need some serious wiring.

http://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html