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Old 02-25-2024, 04:59 PM   #1
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88 Rallye electrical question

Hey all, I have an 88 Jamboree Rallye. I have a question about electrical and power access. Attached here is a photo of the breaker box.

It seems like every AC outlet inside, and the two outlets outside by the door are all connected to the blue GENERAL PURPOSE 15A breaker. The entire power converter is rated 45A. When I turn the MAIN off, everything turns off. So what really is the difference between MAIN and GENERAL PURPOSE?

Also, what is connected to the PORTABLE APPLIANCES? What may one plug into that circuit, and how?

Thanks.
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Old 02-25-2024, 05:31 PM   #2
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My 2 cents…

The individual red breakers may have a slower rate than the general blue breaker. So if, for example, the AC pulls 20 amp starting but settles to 10 amps and you have a plug in appliance pulling constant 15 amps, neither red trips, but total amperage is now 25 amps and the blue trips for safety.
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Old 02-25-2024, 05:42 PM   #3
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Just like in a house, the general use outlets are on a 15 amp circuit. These used to get labeled things like "general use, general purpose, general lights and outlets or general lighting. These are all outlets (and lighting) that are not required to be on dedicated circuits like bedrooms, living rooms, outside etc.

Kitchen countertop outlets and your fixed in place air conditioner are required to be on dedicated 20 amp circuits so the red 20 amp is your kitchen plugs and possibly your bath plug and refrigerator, and the other one is your AC. The main simply shuts the power off to the 3 smaller breakers, just like the main in a house,
Your converter is tied into one of the branch circuit breakers, probably the blue 15 amp. It is rated for 45 amps output, not input. 45 amps of 12 volt output only requires about 4.5 amps of input

The breakers were made by now defunct Bryant/Westinghouse and all their breakers were color coded by amp rating. Replacements are made by Eaton and are the BR series (BR for Bryant) and are no longer color coded, they are all black with white numbers.

If you wanted to put the converter on it's own breaker you can replace that blue breaker with a Eaton BR1515, either a CTL or a NON-CTL will work. (CTL is cheaper) Then remove the wire nut that splices the converter wire into it's shared circuit and put it on one side of your new 15/15 and the general purpose circuit on the other half. Be sure to unplug your rig before working in the panel.

I've never seen "portable appliances", it's normally called "small appliances" meaning they are not fastened in place like the big appliances. The NEC refers to them as "small appliance branch circuits" or SABC.
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Old 02-25-2024, 06:05 PM   #4
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Got it, just confirmed that the outlet above the stove is connected to the red PORTABLE APPLIANCES breaker and not the blue GENERAL PURPOSE breaker. I couldn't not find any other outlet that is connected to the portable appliances. And I'm guessing the fixed-in-place AC is the only appliance that is connected to the AC breaker. I also confirmed that shutting off the MAIN shuts everything off.


To your last point about putting the converter on its own breaker -- what would be the benefit of that? Is the converter providing DC power to everything else in the RV?
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Old 02-25-2024, 06:13 PM   #5
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Quote:
Originally Posted by phildelps View Post
Got it, just confirmed that the outlet above the stove is connected to the red PORTABLE APPLIANCES breaker and not the blue GENERAL PURPOSE breaker. I couldn't not find any other outlet that is connected to the portable appliances. And I'm guessing the fixed-in-place AC is the only appliance that is connected to the AC breaker. I also confirmed that shutting off the MAIN shuts everything off.


To your last point about putting the converter on its own breaker -- what would be the benefit of that? Is the converter providing DC power to everything else in the RV?
I put mine on a separate breaker because it shared with the fridge and there are times when I want to shut one or the other off like when we are driving with the coach air running off the generator, I minimize the load on the generator to keep it from overheating when in the desert.

The converter does provide your 12 volt needs and coach battery charging but when driving you don't need it because you can run all your 12 volt stuff off the coach battery. So when I run the generator I can shut the converter off without killing the fridge, and if I want to run the fridge on gas I can shut the electric to the fridge off without killing the converter.
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