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Old 09-05-2018, 07:50 PM   #1
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Junction box In compartment behind generator

Well having the generator worked on today in Nashville The generator tech showed me an electrical junction box In the first compartment behind the generator Located on the ceiling portion of the Compartment .He said the wires in there came from the generator and go to the Air conditioner And Transfer switch I'm confused About the one going to the air conditioner
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Old 09-07-2018, 08:23 AM   #2
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I don't think so... The generator wiring goes directly to the transfer switch only on any rig I've ever seen. If the A/C had a direct feed from the generator it would need it's own transfer switch for using shore power. Plus you would need two separate breakers 115VAC breakers, one on each power source, for the A/C. I suspect he was a tad confused on that one...
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Old 09-07-2018, 10:29 AM   #3
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I don't think so... The generator wiring goes directly to the transfer switch only on any rig I've ever seen. If the A/C had a direct feed from the generator it would need it's own transfer switch for using shore power. Plus you would need two separate breakers 115VAC breakers, one on each power source, for the A/C. I suspect he was a tad confused on that one...
X2 and saying he may have been confused is very kind. IF there is a second wire connected, it could go to an RV outlet so one could have a “buddy” connection.
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Old 09-07-2018, 10:56 AM   #4
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On my 1994 Bounder with dual AC and 30amp service the generator bypassed the main panel so both ACs could run when on the generator. From shore power there was a selector switch to choose front or rear AC.

So what he is talking about at least did exist on some units. I would assume if your unit is fairly modern and either has a single AC or 50AMP service that this would not be the case.
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Old 09-07-2018, 11:29 AM   #5
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but, why would it be wired that way? why would you need TWO ac's running while driving, but NOT while parked? weird, but I suppose possible.

having said that, it's another of those 'why' questions when it comes to manufacturing decisions by the builder - if you have to 'select' which ac unit can run when plugged into shore power, WHY would the builder then go to extra costs to 'bypass' the transfer switch from the generator to allow you to 'power' both ACs while on generator?
I suppose that the Generator was a larger amperage unit than 30amps? That, again, is not typical, though I suppose, again, it's possible.
If the generator has a 30amp breaker, 'why' could it power both AC units, but 30amp shore power 'could not'(hence, the factory interior 'switch')? or was it a larger 40amp breaker on the Generator?

I'm confrusdeded....(that's a new word, for being really confrused!)
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Old 09-07-2018, 11:42 AM   #6
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my generator was a 5500 watt which would be about 45 amps. I have no idea when 50AMP starting being used in campers but I suspect in 1994 it wasn't common in campers or parks.
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Old 09-07-2018, 11:55 AM   #7
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now a days it seems like we're MORE limited by the generator,
but apparently some factories were giving their customers MORE power than most RV parks and campgrounds... 'back' in the day!
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Old 09-07-2018, 08:01 PM   #8
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I don't think so... The generator wiring goes directly to the transfer switch only on any rig I've ever seen. If the A/C had a direct feed from the generator it would need it's own transfer switch for using shore power. Plus you would need two separate breakers 115VAC breakers, one on each power source, for the A/C. I suspect he was a tad confused on that one...
I agree also with you I've been doing this for many years now And I never heard Such a thing
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Old 09-07-2018, 08:04 PM   #9
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X2 and saying he may have been confused is very kind. IF there is a second wire connected, it could go to an RV outlet so one could have a “buddy” connection.
I couldn't agree with you more thank you very much Peter Clarksville Tennessee
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Old 09-16-2018, 06:05 PM   #10
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Our 89 Chieftain had 30 amp service and a 6500 watt generator. When plugged in you used a selector switch to pick front or rear AC. When the generator was running both ACs ran.


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