JP23
Member
- Location
- California
A 1-line shows 1/0 conductors fed from a 200 amp generator reverse service generator receptacle
in conduit running 60' through a building to a 200 amp non-fused transfer switch and then to an
adjacent 22 Kaic panel with a 150 amp main. I have a few questions regarding this.
1) 240.4 requires conductors to be protected at the point of supply. The generator feeder as shown doesn't comply with
tap rules so shouldn't the feeder conductors fed from the receptacle be required to be 200 amp rated to match the receptacle rating?
Wondering what I'm missing.
2) The transfer switch is rated at 10 kaic and the panel is calculated at 22 kaic. It seems to me that
a transfer switch rated at least 22 kaic would be required or fused protection should be added in front
of it to raise the SCCR. Just wondering how the EE is justifying this or is there something in 110.10 I'm missing?
Any input would be greatly appreciated.
in conduit running 60' through a building to a 200 amp non-fused transfer switch and then to an
adjacent 22 Kaic panel with a 150 amp main. I have a few questions regarding this.
1) 240.4 requires conductors to be protected at the point of supply. The generator feeder as shown doesn't comply with
tap rules so shouldn't the feeder conductors fed from the receptacle be required to be 200 amp rated to match the receptacle rating?
Wondering what I'm missing.
2) The transfer switch is rated at 10 kaic and the panel is calculated at 22 kaic. It seems to me that
a transfer switch rated at least 22 kaic would be required or fused protection should be added in front
of it to raise the SCCR. Just wondering how the EE is justifying this or is there something in 110.10 I'm missing?
Any input would be greatly appreciated.