Bond Bushings

[lipanconjuring1]

Can u please, tell me when is a grounding bushing required, is it in any panel u use with emt,or just service panels?

 

[augie47]

(bump)

 

[infinity]

They're generally not required but may be needed only under certain conditions like bonding around concentric and eccentric KO's.

 

[kwired]

They are not required, but are easy way to comply in certain conditions like bonding around concentric and eccentric KO's.

Metallic raceways containing servcie conductors always require method other than standard locknuts to bond the raceway. Bonding bushing one of most common methods used though.

One could use a pipe bonding clamp on the external portion of the raceway, bonding bushing is most preferred though.

Many eccentric KO's listed to not need additional bonding, some do it anyway or worse yet, some inspectors think it is always needed, even if you can show them it is not.

 

[don_resqcapt19]

Take a look at this post.
Single click on the upper image to open a larger version.

 

[Dsg319]

This is just one example. Also could be different for job specs (different company’s) and hazardous locations.

 

[NTesla76]

Take a look at this post.
Single click on the upper image to open a larger version.

This is a great flow chart.

 

[Electrocutioner]

Can u please, tell me when is a grounding bushing required, is it in any panel u use with emt,or just service panels?

Trigger words: Over 250V, Concentric and eccentric KO's, #4 AWG or larger. Thats when these come into play.

 

[Electrocutioner]

This is a great flow chart.

Thanks for sharing

 

[infinity]

Trigger words: Over 250V, Concentric and eccentric KO's, #4 AWG or larger. Thats when these come into play.

Where are you seeing #4 or larger?