Grounding Bushings

[transman2]

Do you have to install grounding bushings at all boxes or just at the panel in a conduit run when using as a EGC. Thanks!

 

[don_resqcapt19]

See 250.96 and .97

 

[infinity]

What kind of KO's and what voltage?

 

[transman2]

The voltages are 120/208 and the ko's are the normal KO's from the factory in the panels and 4' sqare boxes.

 

[augie47]

Grounding bushings or like methods are usually not required on systems of less than 250 volts to ground except for certain service raceways, loosely joined raceway or some hazardous locations.

 

[jaggedben]

Grounding bushings or like methods are usually not required on systems of less than 250 volts to ground except for certain service raceways, loosely joined raceway or some hazardous locations.

...and raceways with a GEC, including solar circuits.

 

[augie47]

...and raceways with a GEC, including solar circuits.

good point