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Grounding wires all leaving box

884 Views 8 Replies 4 Participants Last post by  sdRick
I have a strange situation going on in my bathroom device box where I want to install a GFCI. The house was built in '71. The box has 1 outlet and a double switch. One side for the light and one for the fan. Turns out there are 5 3-wire conduits coming in there. I believe that:

  • 1 is power directly from the circuit breaker.
  • 1 is leaving to go to the fan
  • 1 is leaving to go to the light
  • 1 is going to an attic light and then onto a bed light
  • 1 is going to kitchen lights

So it's way to crowded in there. I then decided to put a junction box in the attic for the power,attic,and kitchen lights, then just one power down to the bathroom. However upon further inspection i don't know what is going on with the grounds. Each of the 5 grounds that enter the box immediately do a u-turn and go back up and I think to the left. 1 ground comes back in and was hooked to the outlet. The double switch did not have a ground, i changed that.

I am now skeptical about removing the lines and putting the junction in the attic because of the weird grounding situation. But I can't fit a GFCI in the current overloaded box so I think I need to do it.

Does anyone have any thoughts on what might be going on with the grounds?

Thank you
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Google "Boston back wrap." It was an old method to wrap the ground back around the cable and ground it to the box under the cable clamp. It was forbidden starting in the early 70s but I have seen it used later than that.
Boston back wrap was only used with metal boxes.
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