Author Topic: 240V at N & L1?  (Read 806 times)

Online LowSL2

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240V at N & L1?
« on: August 23, 2013, 10:13:32 AM »
I went out on a new (actually used, it came from the $ears outlet) built in Kenmore/Frigidaire Microwave / Oven combo yesterday with the complaint of no power.

Verified circuit breaker was on. So I pulled it out of the wall. Took the back panel of the oven off and was confused when I had 240V between L1 and N and 0V from L2 to N. So I assumed that the "certified $ears installer" didn't wire it right in the junction box.

So I killed the power and went to check the wires and the box fell apart. It was taped together with electrical tape... I found the neutral just hanging there touching the metal box. So I put a wire nut on it and turned power back on. And now I have proper voltage to the unit.  Just no power. Took everything apart and the control boards were burned up. So I called the store where they bought it from and told them to get the installer top fix it or get them a new unit. Because $ears warranty doesn't cover idiotic installs...

Now my question is, why did I have 240 from L1 to N?

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Offline krazytech

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Re: 240V at N & L1?
« Reply #1 on: August 23, 2013, 10:21:21 AM »
Only way to get 240v is L1 to L2 so your N must have been L2.. did you check N to ground? or L1 to Ground?  go to love the sears installers..



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Online LowSL2

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Re: 240V at N & L1?
« Reply #2 on: August 23, 2013, 11:10:20 AM »
I was scratching my head and having to deal with the customer, so I didn't check. She didn't understand English too well and it was hard to explain what I was doing. She literally had her face in everything I was doing.

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Offline RegUS_PatOff

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Re: 240V at N & L1?
« Reply #3 on: August 25, 2013, 08:02:32 AM »
OR the wire colors are wrong at the Breaker Box ...
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Offline theoldstoveguy

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Re: 240V at N & L1?
« Reply #4 on: August 25, 2013, 09:57:40 AM »
If you have an open neutral you can read 240 from L1 to neutral.

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Re: 240V at N & L1?
« Reply #5 on: August 25, 2013, 10:35:42 AM »
That is what I had. Open neutral. How come it was 240v to L1? Shouldn't it have been zero? Or maybe 120v?

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Offline theoldstoveguy

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Re: 240V at N & L1?
« Reply #6 on: August 25, 2013, 10:56:18 AM »
The voltage goes back threw the household wiring. That's the way my Uncle ( a retired lineman for PG &E ) said was easiest to explain. Note if in an oven, the light will not turn on unless you turn on the thermostat. Got that 30 years ago and totally threw me off on a dryer first then 6 months later a wall oven.

Offline redrock

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Re: 240V at N & L1?
« Reply #7 on: August 26, 2013, 02:51:13 PM »
Hi, Lack of neutral should cause 240V at  l1 to N if l1 to N is an open circuit and n to L2 is a very high rersistance. L2 to n should then read 0V because of no current drawn.

 

GE 240V Advantium Wall Oven Training Service Manual

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