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Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: aspenpilot on July 14, 2011, 11:37:30 pm

Title: Power panel question
Post by: aspenpilot on July 14, 2011, 11:37:30 pm
When plugged into shore power my power panel shows that each line has 122 volts.  When unplugged from shore power and running on the generator line one shows 120 volts and line two shows 0.  Is this correct?
Title: Re: Power panel question
Post by: GregoryS on July 15, 2011, 08:09:28 am
We have an 03 - 320.  Power panel w/generator operating shows 125 on both lines.  Maybe this is because this coach was special built - all electric.  I think the difference might be a 110 or 220 generator. I am sure someone more knowledgeable will respond.

Gregory S
2003 Designer
Title: Re: Power panel question
Post by: Dave Head on July 15, 2011, 09:11:51 am
I don't know your system, but likely so - If the power panel is designed to show a voltage differential, your generator is only a single phase unit. Your inbound 50A is expected to be a two phase input.
Title: Re: Power panel question
Post by: Michelle on July 15, 2011, 09:16:25 am
When plugged into shore power my power panel shows that each line has 122 volts.  When unplugged from shore power and running on the generator line one shows 120 volts and line two shows 0.  Is this correct?

Not likely.  You should show voltage on both legs (at least ours does).

Sounds like one leg from the generator isn't outputting power.  I believe there are 2 small breakers on the genset itself (45 amps, I think).  At least there are on our '03 10 kW PT in the quiet box.  Check there first.  If it's not that simple, you'll need to get the meter out and start checking connections, particularly the transfer switch.

Michelle
Title: Re: Power panel question
Post by: aspenpilot on July 15, 2011, 01:32:23 pm
This is what I came up with.  On the breaker panel located on the base of the bed, I had switched off the breakers for the block heater and the washer/dryer.  When I switched those two breakers back on, my Power Panel then showed 120 volts on both lines.  Not sure why, but that's how it works.  :o  I'll be going over the wiring diagrams this evening so as to better educate myself.  Thanks to all that had suggestions.
Title: Re: Power panel question
Post by: Barry Beam on July 15, 2011, 01:49:31 pm
This is what I came up with.  On the breaker panel located on the base of the bed, I had switched off the breakers for the block heater and the washer/dryer.  When I switched those two breakers back on, my Power Panel then showed 120 volts on both lines.  Not sure why, but that's how it works.  :o  I'll be going over the wiring diagrams this evening so as to better educate myself.  Thanks to all that had suggestions.

Power watch & Engine heater are on the same breaker.