terminal block and breaker screws considered live parts

[jjsparky]

1: If I'm in a jbox with tewrminal blocks and the voltage is 208v between screws, are the screws considered exposed live parts?
2: If I'm in a bucket in a MCC that has a circuit breaker in it and the line side is insulated, are the load side screws of the breaker considered exposed live parts?

 

[jim dungar]

Anything that is energized (above 24V per NFPA70E) and can be touched by (1/4" is a common maximum hole size for 'finger safe') is consider an exposed live part. If you are using conductive probe type devices, like a screwdriver or the stripped end of a conductor, just about any visible conductive surface may be of concern.

 

[Sberry]

Why would we think they wouldn't believe parts?

 

[rbalex]

Live parts and energized are both defined terms in Article 100.

 

[jjsparky]

I took a Nfpa 70e class 10 to 12 years ago. I asked the instructor the same questions. He said the screws were “exposed” live parts because to touch them, you would have to purposefully try to make contacts.