ryan_618
Senior Member
- Location
- Salt Lake City, Utah
517.17(C)
(B) Selectivity. Ground-fault protection for operation of the service and feeder disconnecting means shall be fully selective such that the feeder device and not the service device shall open on ground faults on the load side of the feeder device. A six-cycle minimum separation between the service and feeder ground-fault tripping bands shall be provided. Operating time of the disconnecting devices shall be considered in selecting the time spread between these two bands to achieve 100 percent selectivity.
Eliminate the following fine print note:
FPN:See 230.95, fine print note, for transfer of alternate source where ground-fault protection is applied.
Substantiation: 230.95 FPN no longer exists.
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Is this something that should be proposed or should it be addressed through errat/TIA?
[ October 27, 2004, 07:43 PM: Message edited by: ryan_618 ]
(B) Selectivity. Ground-fault protection for operation of the service and feeder disconnecting means shall be fully selective such that the feeder device and not the service device shall open on ground faults on the load side of the feeder device. A six-cycle minimum separation between the service and feeder ground-fault tripping bands shall be provided. Operating time of the disconnecting devices shall be considered in selecting the time spread between these two bands to achieve 100 percent selectivity.
Eliminate the following fine print note:
FPN:See 230.95, fine print note, for transfer of alternate source where ground-fault protection is applied.
Substantiation: 230.95 FPN no longer exists.
---------------------------------
Is this something that should be proposed or should it be addressed through errat/TIA?
[ October 27, 2004, 07:43 PM: Message edited by: ryan_618 ]