Can I have a junction box AFTER a GFCI outlet and retain the GFCI protection on each branch?

Question

I'm just finishing up adding outlets to the front and back of my house.  I have it arranged such that a new line runs from the panel to a junction box, where it T's off to feed the new outlets.  I understand that I need GFCI protection on this circuit, but I'm not really familiar with the ground fault application.  If I were to add a GFCI outlet at some point between the panel and the junction box, would the two branches coming out of the junction box both be GFCI protected?

isherwood · Accepted Answer

Yes, you can. Electrically that's no different than having a series of outlets on a single run after a GFCI. Everything is wired in parallel regardless.

Harper - Reinstate Monica · Answer

LOAD terminals have precisely one purpose: to attach downline wiring that will be in the "protected zone" of the GFCI.   Only that should be attached to LOAD; all else goes on LINE.
So yes, any GFCI device can protect a downline that is properly connected.
If any hot or neutral wire in a cable is attached to a LOAD terminal, then all hots and the neutral must be attached to LOAD.  The only exception is dual-neutral (12/2/2) cable where you really know what you're doing.
Ground must bypass the GFCI (bootlegging ground off neutral will defeat the GFCI protection).  So for instance if you have an old 2-wire groundless downline, people who want a 3-light tester to read normal, will often bootleg ground off neutaral to fool the tester.  Anything like that must be removed, or the GFCI won't protect you.

Can I have a junction box AFTER a GFCI outlet and retain the GFCI protection on each branch?

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