3 hots / 1 neutral... 3 gfcis

[tbakelis]

Hello All,
I figured this question has been asked a million times. But thanks for your patience.

Here it is:

In a commercial 3 phase service that has 3 circuits on 3 separate phases sharing 1 neutral..... will 3 GFCIs function properly? OR will individual neutrals be required?

Thanks!
Ted

 

[raider1]

You will need an individual neutral for each GFCI after the GFCI device. Leading up to the first GFCI device you can share a neutral.

Chris

 

[LarryFine]

As Chris mentioned, the single neutral will funtion to supply the three GFCI receptacles, but anything connected to the load-side terminals of each GFCI must be run as individual 2-wire circuits.

Imaging each GFCI was a 2-pole switch. Each 2-wire circuit cannot depend on any other switch being closed to assure continuity of both conductors. Don't forget to pigtail the line-side neutrals.