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Old 07-19-2008, 10:54 AM   #1
filly2
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Join Date: Nov 2006
Location: bryan
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M.O.C. #6558
Blowing main circuit on pole

We have a 2007 3475RLS. We was on 50 amp, now at different campsite we only have 30 watt, so have the adaptor on. Everytime we turn on the air and have something else on, the main switch on pole blows. They put a new plug in, because the other was burnt, but doesn't seem to make a difference. Others in camp don't seem to have problem. Is there something that we are missing?
 
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Old 07-19-2008, 11:05 AM   #2
8.1al
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Is the water heater on also? The breaker could also be the culprit, we have had that problem and a new one took care of it.
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Old 07-19-2008, 11:09 AM   #3
ols1932
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M.O.C. #1944
You are just probably overloading the circuit. Every RV is different so it's difficult to compare yours with someone else in the same park. I believe the surge current on the AC is right around 19-20 amps and if you have the TV on and turn on the MW or hair dryer, you'll probably blow the circuit. If there is a lot of high temperatures where you are, that will contribute to blowing the circuit because heat causes the circuit breaker to heat up from the ambient temp as well as current flow through it.

Orv
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Old 07-19-2008, 11:19 AM   #4
BB_TX
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M.O.C. #6433
Make sure the water heater is on gas only (elec switch off). If it is, then I would ask them to replace the breaker at the post. If not, start out with only the AC on. Then add things one at a time (giving each one a few minutes to run before starting the next) and see when it trips. We have tripped a 30 amp post breaker a couple of times. But it was when my wife was running the AC, the washer/dryer, and then added the microwave or some other device.
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Old 07-19-2008, 11:32 AM   #5
dsprik
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You need a digital or analog meter to monitor your amps. All newer 50 amp Montanas will need careful electrical management on 30 amps. You really need a meter.

We spend our summers at a CG that only has 30 amp. We have a washer, a dryer, and 2 A/Cs with a pretty good A/V load of equipment. We switch our hot water heater and fridge to gas temporarily if needed, but we are not paying for electric, so we try to get the HW heater back to electric ASAP.

We do throw that breaker on occasion, but we have a Kill-A-Watt digital meter that helps us from doing it way more often...
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