Two 10 amp breakers in a thirty amp popup

swsmith

Member
Dec 15, 2021
51
Why does my 30 amp pup with A/C only have 2, 10 amp breakers in the box? It's a 1995 Jayco. Is it possible the A/C has it's own breaker/fuse somewhere, ir can it go out in same line without one?
 

SteveP

Super Active Member
Platinum Supporting Member
May 21, 2015
2,474
If you have an A/C it should be on a 20 amp breaker. I presume the breakers in you pup have been replaced. It should have 1 15 amp and 1 20 amp breaker. The 15 should be attached to 14 gauge romex, which is the circuit to your outlets and the 20 should be attached to 12 gauge romex with only the A/C outlet in the circuit. The 12 gauge is noticeably larger in diameter.
 

swsmith

Member
Dec 15, 2021
51
As I read the several answers - my sense is you do not expect to see a breaker on the incoming Shore Power feed?

Correct?
I don't understand why I have only 2, 10 amp breakers without a 20 amp for the A/C. My plug is a 30 amp plug. Missing 10 amps, maybe without a breaker. Definitely need to do more digging around.
 

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,631
Oakland, California
Here is what I thought was the normal pracitce (now I am not so sure).

I though that the point of this configuration was to have one-breaker controlling all power located inside the camper.

Its how my Aliner was/is wired.
 

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rabird

Howdy!
Mar 3, 2006
7,840
N. TX
Since all breakers are the same as well as PUs [:O)] I'll show my 20 & 15 A breakers from my '96 086, note no main breaker (I generally plugged into a 30A protected outlet)! I had no ac, I did nave a 20A outlet wired for ac or anything else I cared to use it for.
 

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swsmith

Member
Dec 15, 2021
51
Rabid, I have that converter box as well. You're saying the left side is 110v, and the right side with 3 automotive fuses are 12vdc. I have an additional panel with two regular 10 amp breakers in it. The 30 amp cord goes into that, and a 12 gauge wire goes to the a/c from there. A 14 gauge wire comes out of the breaker box, to the converter. From there a 14 gauge wire goes to one receptacle, passes through the plug for the a/c, and then on across the pup to the other receptacle. It all works as it should. Just not sure why the 14 gauge goes through the 20 amp receptacle for the a/c. I almost would have to pull the water heater to open that receptacle box.My head hurts.....
 

swsmith

Member
Dec 15, 2021
51
I had no idea 10 amp breakers were even a thing.
Apparently in 1995 there were. I looked closely, and it all looked original, down to the A/C receptacle being behind the water heater, and the cover around the box using the same paneling as the rest of the camper.
 

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,631
Oakland, California
FYI - here is what I have (it may be a bit "Over the Top")

  • Converter
  • Main (from Shore Power to bus bars)
  • Outlets (1 inside, 1 outside)
  • Frig outlet (only)
 

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