some grounding questions

How is it determined where a circuits first receptacle is,for GFCI protection to all other receptacles downstream on that circuit? If this helps... 9 of the 13 receptacles have a single 2 wire cable going into the box,the other 4 receptacles have 2 , 2 wire cables going into the box.

And is the label "No equipment Ground" or "GFCI Protected" needed ?


With this old 2 wire system i am getting a weak glow from a neon light tester when i test for ground with 9 of the 13 receps,A strong glow from two receps,(see below),and 2 recptacles show no kind of ground reading glow at all. Why should i get a reading of a ground if this is a un-grounded system?

It gets stranger at least to me right now..lol. In a kitchen receptacle and a receptacle in the living room both have a real ground? did the electrician back in the 1950's decide to stop using ground wire for the rest of the house...?


Any advice or suggestions welcome from master electricians,electricians and all

Thanks!!

Obviously if there's only one cable going into a box, there's nothing downstream from it, so you can rule out 9 of the boxes. How many GFCI receptacles do you have?

receptacle

The "first" receptacle is the one, that if you disconnect its feed, all the other receptacles are dead.

hj said:

The "first" receptacle is the one, that if you disconnect its feed, all the other receptacles are dead.

Click to expand...

....and there is no way to determine this without physically checking.

If the wire was run in BX(? -the one with the metal jacket), the metal jacket was grounded at the panel and at the box. Since it is steel, it corrodes, and increasingly becomes a worse and worse ground. That is the situation at my mother's house.