Nec 314.30(b)

[erickench]

The above nec section state's the following:

"Underground raceways and cable assemblies entering a handhole enclosure shall extend into the enclosure, but they shall not be required to be mechanically connected to the enclosure."

For the 2008 code an additional exception was added to NEC 300.12. The exception states:

"Raceways and cables installed into the bottom of open bottom equipment, such as switchboards, motor control centers, and floor or pad-mounted transformers, shall not be required to be mechanically secured to the equipment."

Perhaps a similar change should be considered for NEC 314.30(C). I mean it can't be helped. A handhole enclosure with a closed bottom would have to be mechanically connected to incoming underground raceways and cables. Besides you would still need an equipment ground to set up an effective fault current path.

 

[erickench]

Perhaps a similar change should be considered for NEC 314.30(C). t path.

Excuse me I meant NEC 314.30(B). Whew! There's so many sections that I get confused.

 

[barbeer]

I do not see where you are going personally. The article is consistently written IMHO.

 

[Twoskinsoneman]

Besides you would still need an equipment ground to set up an effective fault current path.

IMO not requiring a raceway to mechanically continuous does not ALSO relieve it's requirement to be electrically continuous.

Look at 300.10 and 300.12. Two separate rules one for mechanical and one for electrical. IMO a metal raceway come up into bottomless equipment still has to be bonded.

 

[erickench]

IMO not requiring a raceway to mechanically continuous does not ALSO relieve it's requirement to be electrically continuous.

Look at 300.10 and 300.12. Two separate rules one for mechanical and one for electrical. IMO a metal raceway come up into bottomless equipment still has to be bonded.

The new exception in 300.12 does not pertain to bottomless handhole enclosures. It cites examples such as switchboards, motor control centers and floor or pad mounted equipment. All I'm saying is that NEC 314.30(B) should be written with the same consistency that NEC 300.12 Exception 2 is written.
I guess NEC 300.10 would cover handhole enclosures as far as equipment grounding is concerned.