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  1. Is armored wall line grounded?

    We are replacing a range exhaust and found that the original wall line is in a corrugated metal sheath with only a black and a white wire, also in Bendy metal sheaths ... I googled and found this is BX wiring. It is an old house but was rewired (and there are grounded outlets - 3 prongs through...
  2. What do I do with ungrounded outlets?

    We have a house that was built in 1947. Some of the outlets are grounded (due to subsequent piecemeal work) and others are not. The previous owner installed grounded (3 prong) outlets where formerly there were ungrounded (2 prong) outlets. I know that's uncool and is a hazard. We are doing...
  3. 2 prong to 3 prong outlets - need help!

    Hey guys, I am trying to convert several 2 prong to 3 prong outlets throughout my house that was built in 1959. I have attached 2 photographs of the outlet, one from the right, and one from the left. You will see the right side of the outlet has a RED and a BLACK wire attached to it. The...
  4. Is Grounding using Armored Cable ok?

    I know this has been posted before but I've read conflicting reports as to what is ok by NEC. My house was re-wired with 2-wire armored cable (wired in 1993) so this is not the old armored cable people talk about. I'm assuming armored cable was used because of nails etc. behind the walls. I've...
  5. Check whether metal grounded or not

    Hi All, My unit is using carpet and timber floorboard (in kitchen area), my wall is also using plaster board. Most of the time I build computer for my friends. Now, when dealing with small delicate computer parts, I need to worry of static electric shock which might 'fry' the parts and make it...
  6. Three hot wires coming into a receptacle?

    I've been updating some of my 120 volt duplex two-slot receptacles, which have grounded boxes, in my house which is about 50 years old now, to three-slot grounded receptacles. Everything has been fine so far but today I found that one of the receptacles has three hot wires (black) and three...