Mezani
Member
- Location
- Washington
Per 250.122 (G) Feeder Taps. Equipment grounding conductors run
with feeder taps shall not be smaller than shown in Table
250.122 based on the rating of the overcurrent device ahead
of the feeder but shall not be required to be larger than the
tap conductors.
I have a 4000 amp feeder and am installing a 500 amp 10' tap with parallel 300 Kcmil CU conductors. The CU ground wire required is 500 Kcmil.
The first question is what is the tap conductor? Is it 300 Kcmil or the aggregate of the two, 600 Kcmil? Should the ground wire be 300 Kcmil or the 500 Kcmil?
Thanks for your help.
with feeder taps shall not be smaller than shown in Table
250.122 based on the rating of the overcurrent device ahead
of the feeder but shall not be required to be larger than the
tap conductors.
I have a 4000 amp feeder and am installing a 500 amp 10' tap with parallel 300 Kcmil CU conductors. The CU ground wire required is 500 Kcmil.
The first question is what is the tap conductor? Is it 300 Kcmil or the aggregate of the two, 600 Kcmil? Should the ground wire be 300 Kcmil or the 500 Kcmil?
Thanks for your help.