GCFI breakers and shared conduit

[eddein]

OK, want to make sure I have this correct. I have an in-ground pool that I need to add a receptacle in 2 different spots for sump pumps. The receptacles UF-B wire is already in place running from receptacle locations back to pool light box. (22" deep). When the lights were done, electrician ran extra load line to lighting box for this hookup at a later time.

My understanding is, and please correct me if I am wrong, is that because there is a GFCI breakers neutral in that conduit (especially being used for pool lights) from panel to light box that any other circuit sharing that conduit also has to be GFCI protected. Meaning just a load wire is not to code, I would need a separate neutral for each circuit/receptacle?

If I am correct then I have a couple of ways I can think of:

1- add another load and neutral line, put in a 20amp 240v GFCI breaker and do a split circuit.

2- add another load line and 2 neutrals with 2 15 AMP GFCI breakers making each receptacle on it's own circuit

3- or a better suggestion from you all

Thanks Ed

 

[AntonLargiader]

If the new load current and neutral current are going to flow through the same GFCI breaker, then there's no issue. If the new receps will be powered by a new breaker and the neutral current will return through a different GFCI breaker, then no, that's not OK. I'm not 100% clear on your setup.

 

[Innovate1]

Not completely clear on your wiring. A sketch would help. Bottom line is that a GFCI detects difference in currents in hot and neutral (or both hots and neutral if it is a dual with neutral). So adding another hot wire and returning the neutral through the existing GFCI would create unequal currents and trip the GFCI. They do make dual GFCI breakers that also have a neutral connection (along with 2 hots). You can run two 120V circuits with both using that neutral.

Given your description I am not sure any of your proposals would work.

 

[wyliesdiesels]

Any circuit near a pool needs to be GFCI protected.

Also, you need to use insulated EGCs and UF-b may not qualify.

 

[eddein]

Could load sketch because of 5 post rule but add https:// in from of this if link doesn't work.

photos.google.com/share/AF1QipNNJ9YhDkzU_qD-FnY3UCgMtSQ8gQdcpw95nh9ozck0epc8vS4rzHLevpElIauI_A?key=T1pQOFJKb1FZdVNPaGNCeHdleF9uTFhmblZLLXZn

Ok just to be clearer the pool has already passed for underground work and bonding. UF-b wire is allowed for maintenance circuit as long as it is greater than 5' from pool wall, which it is. Now back to my question.

-From panel to light box is 2 hots, 1 ground and 1 neutral.
-1 hot, the neutral, and ground are tied to the 2 pool light now and working
-not changing anything involving pool light wiring

What I want to do is-

-add 1 or 2 gcfi circuits in the same conduit to run outlets
-there is one extra hot wire already in conduit added by electrician for when uf-b was run, don't think this is all I need. I would think I would need another neutral or two. depending if I was to do 2 single gcfi breakers or do a MWBC (multiwire branch circuit) with 1 neutral 2 hots.

The wiring up part of it is not a concern of mine, I am good up to 440 3 phase.
My question is "sharing the conduit" between the panel and light box with additional gcfi circuits??? (the extra hot electrician ran made no sense to me without a neutral also)

And if someone has a better suggestion with less wiring I would consider