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Old 10-17-2015, 06:41 PM   #11
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30 amp vs 50 amp

I just reread your statement and I am thinking you mean this.
If you are running 2 separate 30 amp lines then you may be leaving an open ground somewhere. May be an issue with safety. I would think if you run 2 separate 30 amp circuits to a 50 amp receptacle then that may work but you would only have 60 amps total (two 30 amps).
You have to have a ground connect somewhere in the circuit (not. Just a neutral). Meaning 4 wire in all going to your MH.
Make sure you use the correct breaker for your circuit.
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Old 10-17-2015, 08:06 PM   #12
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Just remember an electric heater uses about as much power as an AC
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Old 10-17-2015, 08:58 PM   #13
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It is generally correct that a home 30 amp connector is setup for 30 amps at 240 volts. The problem is often that there is no neutral as it is only a 3 wire cable containing black, red (both hot) and a ground. This means that there is no neutral which is absolutely required for an RV connection. If your house connector has 4 contacts, it will contain a neutral and ground and can be re-configured for powering a 50 amp RV connection, although it will probably only supply 30 amps per leg and not the full 50 amps that a standard RV connector offers. In general, this should not be a problem and the wiring would be protected by the feed breaker in the box to 30 amps per leg.
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Old 10-17-2015, 09:20 PM   #14
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One added piece of advice...invest in a good surge protector. They can be a bit pricey, but worth it. Last week, after two years of no incidents, I plugged into the campground service and found no ground and reversed polarity. Without a surge protector, it could have resulted in a lot of lost $$$.
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Old 10-17-2015, 11:33 PM   #15
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Vince...tell me more. No ground is not the end of the world, but reverse polarity? Was this a 30 amp or 50 amp connection?
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Old 10-18-2015, 06:54 PM   #16
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30 amp vs 50 amp

Scott, reverse polarity means one leg of the power, which should be the neutral needs to be connected to the neutral leg. One must not connect the hot leg to the neutral leg of the MH or you will end up electrifying the ground of the receptacles. Highly possibility of getting electrocuted.
With the 50 amp connection it is 240 volts across both hot leads, 1 ground and 1 neutral and a 30 amp connection it is only 120 volt across 1 hot lead, 1 neutral and 1 ground.
One a dryer connection there is 240 volts across 2 hot leads and one ground.
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Old 10-18-2015, 10:08 PM   #17
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ScottBrownstein, The outlet was 30 amp. The term "reversed polarity" came up on the surge protector screen and would not allow a connection to our MH.
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Old 10-19-2015, 04:50 AM   #18
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So, at the very least we know that the ground was missing and the surge protector felt that the neutral and hot were reversed on the single 120 volt line. The ground and the neutral are isolated in your box so perhaps it was wired backwards.
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