3rd A/C in larger 5th Wheels

[Wusaah]

I have ran all 3 A/C's plenty of times on 50 Amp. I tried to run all 3 on the 5500 gen and it shut it down when the 3rd air tried to fire up.


Rob

[philfishes]

You can only use 50 amps of anything. when you exceed 50 amps on one leg breaker will trip. SO one could not get to 100 amps.

[Mopar_Earl]

Originally Posted by philfishes

You can only use 50 amps of anything. when you exceed 50 amps on one leg breaker will trip. SO one could not get to 100 amps.

Sure can pull 100 amps total with 120v. 50 amps on each leg. Two legs. If you exceed 50 amps on any leg it will trip the breaker which are linked so you trip both legs. But yes, you can pull a total of a 100 amps between the TWO legs. Max of 50 amps per leg limited by the main breakers but a total of 100 amps. Basic electrical stuff. No different than your house panel. Have a 100 amp or 200 amp main, bam, you have 200 or 400 worth of 120v amps between the legs. Now if you're using all 240v loads, than no, you are limited by the main breaker amps. RVs use only 120v. So that's why you get 100 amps of service with both legs, 50 each. If the RV only used 240v loads, than you'd be correct in saying you'd only have 50 amps total.


Earl

[dives2little]

I have a 387RDFS with three coolers. We visit my father-in-law in El Paso 8-10 time/year, and 3 A/C is HUGE in the summer! we are able to run all three off the 50A service and two off the Onan 5500.

The day we picked our unit up (El Paso area), the temp was flirting with 100 and the inside temp was 56-worth the investment!

[shagensicker]

ON the Jayco Factory 3-AC options... only two run at at time. The middle (main AC) and either of the front or back together. I have 3 thermostats in our Pinnacle 38FLSA. When the bedroom satisfies, it allows the front living area one to run. The front and back units are on the same leg of 120v, that is why they lock them out from both running together.