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Old 04-21-2014, 06:26 PM   #29
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Originally Posted by jamesrxx951 View Post
The main was not shut off and the generator feed is wired to the transfer switch. Just plug and play.
Then you lucked out and had a transfer switch that sensed the over voltage or an electrician who screwed up in the first place. I'm trying to figure out how he wired a 4 wire (3 + safety gnd) to a 3 wire (2 + safety gnd) connector. Leaving off the neutral would not do it as that is how one gets 240 V for things like Hot Tub heaters.

What might have saved you is that a lot of the newer electronics are rated for 110-240 VAC into the switching power supply they use. Easier than making two supplies for various countries. OTOH I would not depend on that in all cases and bet against it for things like heaters.
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Old 04-21-2014, 06:45 PM   #30
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Originally Posted by nothermark View Post
Then you lucked out and had a transfer switch that sensed the over voltage or an electrician who screwed up in the first place. I'm trying to figure out how he wired a 4 wire (3 + safety gnd) to a 3 wire (2 + safety gnd) connector. Leaving off the neutral would not do it as that is how one gets 240 V for things like Hot Tub heaters.

What might have saved you is that a lot of the newer electronics are rated for 110-240 VAC into the switching power supply they use. Easier than making two supplies for various countries. OTOH I would not depend on that in all cases and bet against it for things like heaters.
It has been a very long time so I don't remember 100% how it was wired exactly but the im almost positive the neutral was connected to the ground side of the plug and the ground wire was bonded to the box. I was able to make voltage checks at the transfer switch. It really didn't dawn on me either as since I was a newby I thought the motorhome was wired for this configuration. Thinking of old dryer plugs was in my head and thinking that I had high amp A/C's, 1500 watt convection microwave, and the rest of the accessories with a motorhome it just made sense that there would need to be 2 power legs. Figure just one dedicated one for A/C's. Good learning experience non the less.
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