02:41PM | 03/15/04
Member Since: 03/14/04
1 lifetime posts
I have an old 1920 house with the old wiring, one Black (Hot) and one White (Neutral). I am trying to replace the polarized recepticals with new duplex recepticals, unfortunately I don't have a ground wire. I installed the duplex and ran a ground wire to the receptical box and still get a "Open Ground" reading on my tester. What have I done wrong? My house also doen't have conduit all throughout it, do I need too have conduit from the receptical box to the main breaker in order to complete the ground? Or am I stuck with the polarized plugs for good? What are the ramifications of an open ground? My electrical book only shows me how to test and hook up. Please help! Thankyou


12:55PM | 03/16/04
Member Since: 09/17/02
527 lifetime posts
Your house does not have ground wires. You can not replace the receptacles with 3 prongs grounded. You can replace them with GFCI receptacles and use the label to mark them ungrounded. This will be safe and to code.

It will not be actually be grounded but it will be safe. If you intend to use surge protectors they will not work properly without a true ground.

Tom O

01:37PM | 03/16/04
Member Since: 09/17/02
487 lifetime posts
Installing a GFI receptacle is not a cure in some cases. The following equipment must be grounded (unless protected by a system of double insulation) in a residential occupancy: Refrigerators, freezers, air conditioners, clothes washers, clothes dryers, kitchen waste disposers, information technology equipment (computers), sump pumps, electrical aquarium equipment, hand held motor-operated tools, stationary and fixed motor-operated tools, hedge clippers, lawn mowers, snow blowers, wet scrubbers, portable handlamps.

As far as I know, there is no exception to the grounding requirement, GFI protected or not.

If all you're doing is replacing old worn out receptacles, 2 prong polarized receptacles are still available.



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