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Old 02-19-2007, 03:58 PM   #15
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No.

But your polarity light would illuminate if that condition existed.

Tom
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Old 02-19-2007, 05:15 PM   #16
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Fyrzowt: Oh, it worked, but it would work in the absence of a short. The current flows "the wrong way", but as long as there wasn't a short it wouldn't matter. Now that there is a short, the breakers not tripping would become a symptom of the miswiring.

Should be trivial to identify with the voltmeter. I wish I'd thought of it yesterday!

--david
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Old 02-19-2007, 05:18 PM   #17
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Tom: sorry, I don't understand the "No" answer. Or rather, I understand it, but it's not super helpful.

Good point about the polarity light. I need to find it.

--david
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Old 02-19-2007, 05:33 PM   #18
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Quote:
Originally Posted by davida
Tom: sorry, I don't understand the "No" answer. ...
Even if the polarity is reversed, the breakers will trip in your scenario about the neighbor's wiring being off-nominal. Functional circuit breakers will protect you.

Current is current, and it does not matter if it is flowing in through the black wire, or out through the white wire.

I don't mean to sound terse in my responses, but I do feel you need to start with what I think is a safety issue as opposed to what is a convenience problem.

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Old 02-19-2007, 05:44 PM   #19
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Tom: so if I'm reading you right, you're saying "first, check the breakers to see if one or more of them have fused". I've got no problem with that, and I will do so ASAP.

Am I missing something else you're suggesting? I don't understand the point about convenience vs. safety -- I'm not consciously making a choice b/w one and the other!

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Old 02-19-2007, 05:50 PM   #20
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you guys do know canadian trailers are wired diffrently than US standard.

let's try this, is it a gfi circuit you are plugging into?

what are you using for an adaptor?

john
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Old 02-19-2007, 06:40 PM   #21
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Quote:
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you guys do know canadian trailers are wired diffrently than US standard. ...
No John, I did not know that.

How is a Canadian trailer different?

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Old 02-19-2007, 06:51 PM   #22
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neutral and ground are bonded on the panel as it is in your house.

i would post the pages from my manual but they are with the trailer in storage about 100 miles away.

if he is plugged into a gfi or has a funky adaptor, and/or the phase and neutral are reversed it will trip.

that is not to say he doesn't have a US spec trailer.

more info needed.

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Old 02-19-2007, 06:54 PM   #23
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The trailer was born in the US and had no modifications on import, so that doesn't apply.

It is plugged into a GFI circuit (just to confirm: an outlet w/ a pair of test/reset buttons).
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Old 02-19-2007, 06:58 PM   #24
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so, to repeat tom's original question.

can you plug it in with ALL of the breakers in the trailer open without it tripping?

cord ends not laying in the snow?

john

ps, yes. if it has buttons it is a ground fault interuptor circuit.
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Old 02-19-2007, 07:36 PM   #25
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That happens all the time on mine when I cross a neutal to ground.
Even with the breakers off it will trip the GFCI.

Doesn't trip the breaker though.
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Old 02-19-2007, 10:03 PM   #26
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David

I think your neighbors outlet is a GFIC protected circuit if there was moisture in
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Old 02-19-2007, 10:05 PM   #27
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John: yes, I believe it did trip the gfci even with all breakers off. I only tested it once and I could have missed a breaker but I don't think so.

Mark: thanks for piping up!

I need to read up on the difference bw a gfci and a breaker...
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Old 02-19-2007, 10:13 PM   #28
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David

I think your neighbors outlet is a GFIC protected circuit ,if there was moisture in the conections of the airconditioner it could trip,because the white[neutral conductor] could be leeking electricty to the ground.I would look at the conections in the roof top unit first.

good luck

Doug
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