Question about Kitchen Ranges

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220v loss on one leg...

Kitchen range suddenly went luke warm. I found one leg has dropped to 21v. At the breaker 220v. Breader seems to be working fine. Outlet seems to be working fine. All wires and connections are in good order. What do I do next or where might I look to find the problem. sumation: Power at box 220v. Power at cable going into socket: 21v on one leg, 240v on other leg...
Help!!!

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  • ElectroHead Jan 31, 2008

    Saskcat:

    Thanks for the info.

    To answer your question about the bus measurement at the box, I first cut the breaker off. The red and black leg terminals are in direct access, so with the breaker off I took an ac reading. Now with the breaker on I took the same reading with the probes and got 220v which told me the breaker was working. I realized that something had to be wrong between the box and the outlet. So, under the house I went and behold, i found where the previous owners had nut capped the 220v lines together to extend them, and it was on the ground. upon working the wire nuts I found the leg I was having the low reading on was loose.

    Again making sure the circuit was off, I trimmed and reconnected all connections and taped them to the cable. Then I hung the cable up off the rafters to get it off the ground. Went to the box, turned on the circuit and five minutes later I was making tea.

    The range works hotter and faster than before. I think that with the heating and cooling that happens whenever the stove was used disassembled the connection over time. Also, it didn't help that anytime I had work done under the house, you would invariably hit the cable. With my fix the thermal loosening should no longer be a problem...

    Many thanks again for your response...

    ElectroHead--

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Ok. lets make some assumtions. You must be of some electrical background to take a measurement such as 240v 21v. I will also assume you are measuring to ground (the half U).
I will also assume you are measuring at the wall recepticle(plug on wall / or even in the back of the range itself if no plugin)
1) four colors there. red, black, white, bare. or u-ground, middle-white, either side red/black.
2) measure from ground (U) to either side. should show 110v each.
3) measure from middle blade to either side and it should show 110v each
4) if either of those reads are not that, then you can look for a nail or a sharp edge that has poked through or cut through the range cable between the panel box and the range.
5) when you find the problem call an electrician in to fix it. it shouldn't cost much as you have done all the leg work.
6) one more thing- make sure the power at the panel box is 220v. I'm not sure how you did that this far, but you must use extreem caution as not to get zaped.
CAUTION must be used with cheap meters, as they can fail also.
7) if the break is close to one end, the electrcian will probebley add on some new cable and you will be ok.
call back with more info if you want :)

Posted on Jan 31, 2008

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