Signal light addition to general purpose lighting circuit

[joeking97]

There's a project to add a warning light that an operator can turn on when they're doing a specific task to let others know to not enter the area.

The contractor is wanting to power these warning lights from the general purpose lighting circuit in the area. I don't think this is a problem off the top of my head and doing some looking I don't see anything that would prohibit this in the NEC. Not sure about any other standards though. Just looking for advice for my own curiosity.

 

[ptonsparky]

How important is the warning if power to the general lighting circuit is off, for whatever reason.

 

[joeking97]

How important is the warning if power to the general lighting circuit is off, for whatever reason.

There is a barricade tape they're going to put up whenever they're doing this task anyway. It's more like a CYA implementation rather than any hard safety rule.