I don’t see an exception that permits the raceway as the EGC.
680.25 Feeders These provisions shall apply to any feeder on the supply side of panelboards supplying branch circuits for pool equipment covered in Part II of this article and on the load side of the service equipment or the source of a separately derived system.
(A) Wiring Methods Feeders shall be installed in rigid metal conduit, intermediate metal conduit, liquidtight flexible nonmetallic conduit, or rigid nonmetallic conduit. Electrical metallic tubing shall be permitted where installed on or within a building, and electrical nonmetallic tubing shall be permitted where installed within a building.
Exception: An existing feeder between an existing remote panelboard and service equipment shall be permitted to run in flexible metal conduit or an approved cable assembly that includes an equipment grounding conductor within its outer sheath. The equipment grounding conductor shall comply with 250.24(A)(5).
[This message has been edited by caselec (edited 12-08-2006).]
#100672 - 12/09/0601:02 AMRe: Pool Equipment Feeder Grounding
" An equipment grounding conductor shall be installed with the feeder conductors between the grounding terminal of the pool equipment panelboard and the grounding terminal of the applicable service equipment or source of a separately derived system. "
It doesn't specifically say that a separate insulated grounding conductor must be installed as it does in 680.23(F)(2)for a pool light.
Based on 344.60 RMC is approved as an equipment grounding conductor. It is not an insulated grounding conductor though.
680.25(b) continues on to say
" For other than existing feeders covered in 680.25(a), exception, or feeders to separate buildings that do not utilize an insulated equipment grounding conductor in accordance with 680.25(b)(2)this equipment grounding conductor shall be insulated"
#100674 - 12/09/0602:05 AMRe: Pool Equipment Feeder Grounding
The only thing that changed in 680.25 over the decades is the requirement that the EGC be insulated. As far as I know the conduit was never OK for the grounding of a pool panel. It always required a grounding conductor in the pipe.
[This message has been edited by gfretwell (edited 12-09-2006).]
#100676 - 12/09/0601:18 PMRe: Pool Equipment Feeder Grounding