Subpanel without Main Breaker

[Simon2015]

There is a NEC code related or that state that THE BREAKER THAT FEEDS a subpanel without main breaker HAS TO BE LOCKABLE.

 

[luckylerado]

It would a new one for me.

 

[Sierrasparky]

no, not that i am aware of.
I suppose one can interpret the code that way.

 

[kwired]

Not a NEC requirement. Not a bad design either, especially in cases where strict LOTO practices are applied.

 

[templdl]

Not required but it may be a good idea though.

 

[petersonra]

There is a NEC code related or that state that THE BREAKER THAT FEEDS a subpanel without main breaker HAS TO BE LOCKABLE.

there might be some cases where this is true for other reasons, but not as a general NEC rule.