Junction box and conduit labels

[anbm]

Are conduit and j-box marked with circuit numbers required by code or just because of engineering specification?

 

[infinity]

Not required by the NEC for normal branch circuits. Emergency circuits boxes are required to indicate an emergency system.

 

[tank728]

Emergency circuits boxes are required to indicate an emergency system.

What code section might that be?

 

[rc/retired]

What code section might that be?

700.10(A)

 

[tom baker]

Not required but really usefull over the life of the building. Easy to do with a sharpie

 

[roger]

There are also requirements in 517 for critical branch circuits.