Ridgid conduit bonding

[timecon]

Installed a 250kW natural gas generator. The 4" rigid conduits are risers from PVC conduit in the ground. Are the ridged conduits need to bonded to ground.

 

[hbiss]

Do they connect to the generator housing?

-Hal

 

[timecon]

No, the conduits come up through conduit window.

 

[hbiss]

Then you will have to put grounding bushings on them and run a bonding wire through them to the generator EG.

-Hal

 

[infinity]

As Hal stated they need to be bonded. You use a single bonding jumper for all of the raceways or individual bonding jumpers.

 

[timecon]

Thanks for information. One last thing what section in the NEC can I find this code to show contractor. Thanks again.

 

[roger]

Thanks for information. One last thing what section in the NEC can I find this code to show contractor. Thanks again.

250.4(A) (3),(4), and (5)

 

[timecon]

Thank you