Question about System Power Supplies
While working on a neighbors electrical wiring in his used modular home because they lost power to their outlets and lights in the living room, dinning room, hall way to master bedroom, master bed room, master bedroom closet, and master bathroom (including the master bath room GFIC outlet). I checked the breaker box for problems and found that two different 20 amp breakers connected to the same circuit. While trouble shooting the problem I found a 'junction / 120 volt outlet 4X4 box' behind the electric stove in their kitchen with the neutral wire connection loose from the neutral wire bundle connection, all the ground wires connected in a bundle and to the outlet, the hot wire to the outlet properly connected, and (the problem) the 5 wires bundled with the hot wire to the outlet connection and all the hot wires burnt (insulation missing or chared). Using my multimeter I found which wire went to the lights and outlets that wern't working. I taped up the hot wires not used in the circuit to prevent any further shorting of the wires and connected the hot incomming wire to the outlet and the wire going to the lights and outlets that were not working before.
I could not find any connection to the other breaker that was found to be common to the breaker for the lights and outlets. I also could not find any thing that wan not working in the home. What in the world are the other wires in the outlet/junction box? Any help will be greatly appriciated.
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I disagree totally. Nobody wastes copper wire, especially idiots (because they make less money). Thoose extra wires are VITAL. The way to identify them would be to get a long extension cord, long enough to reach main breaker box. TURN OFF MAIN POWER SWITCH TO ENTIRE HOME. Make sure the "line" or "hot" wires are dead (since there are two boxes looped together, this house system may not be dead just from a switch). Once you are sure nothing is hot, use a VtVm to loop through the extension cord to each wire in main breaker box (top and bottom of each line/switch) and the bundle of wires in stove/oven box, testing continuity on each one. This will identify exactly where each wire DOES go... unfortunately, then you must determine where it SHOULD go (and sounds to me like those answers will be quite different) Be sure to get a VALID ground, since the stove is used near water. On mobile homes, this means hammering a long rebar or (specific, commercial copper grd rod) into the soil.
Posted on Dec 14, 2007
Won't be a wiring schematic for it. If it is a modular it will be wired same as a house. Unfortunaltly it will be wired by the lowest paid electrician you have ever seen. LOL. If the wires are hot, put a multimeter on them and have someone flip the breakers one by one to identify the wires and breakers. If they are not causing any problems then they are just spare connections. Don't know why they would even be there.
Posted on Dec 12, 2007
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