Ok found the code Don was talking about, 620.85 in the elevator pit, the machine room can have the breaker though, it doesn't make sense why a GFCI breaker can not be used in Lieu of the receptacle but it does require the receptacle version?
As for the OP question as worded, the only place in the NEC that I can find that specifically says not to use a GFCI, is 210.8(A)(5) exception.
ok I'm done searching for a while lol
hurk.
If you have the 2008 handbook look at the commontery on 620.85,
the first paragraph of 620.85 requires GFCI -type receptacle for each 15-and 20-amp recpetacle installed in pits,on elavator car tops , and in escalator and moving walk well ways. This requirment is based on the premise that the reset push button for a tripped GFCI receptacle should be within easy reach of an elevator mechanic working in confined spaces.
The second paragraph of 620.85 requires that all 15- and 20- amp receptacles
installed in machine rooms and machinery spaces have GFCI protection for personnel.
This protection can be affored by either a GFCI-type circuit breaker or a GFCI-type receptacle because machine room spaces usually do not cause access hazards for service personnel.
:grin:so i hope that was what don was talking about:grin: