Branch-Circuit Voltage Limitations

[David McCombs]

Lighting voltage requirements for a Building ,school, office, church, etc. lighting requirements for the bathroom. Where in the code does it limit the use of 277 volt lighting for bathroom?

 

[charlie b]

I don't think there is such a rule, if I correctly understand your question. I think you can use 277 volt lights in a bathroom. See 210.6(C).

 

[chris kennedy]

Where in the code does it limit the use of 277 volt lighting for bathroom?

Try 210.6(D)

210.6 Branch-Circuit Voltage Limitations.
(D) 600 Volts Between Conductors.

Circuits exceeding 277 volts, nominal, to ground and not exceeding 600 volts, nominal, between conductors shall be permitted to supply the following:
(1) The auxiliary equipment of electric-discharge lamps mounted in permanently installed luminaires where the luminaires are mounted in accordance with one of the following:
a. Not less than a height of 6.7 m (22 ft) on poles or similar structures for the illumination of outdoor areas such as highways, roads, bridges, athletic fields, or parking lots
b. Not less than a height of 5.5 m (18 ft) on other structures such as tunnels
(2) Cord-and-plug-connected or permanently connected utilization equipment other than luminaires
(3) Luminaires powered from direct-current systems where the luminaire contains a listed, dc-rated ballast that provides isolation between the dc power source and the lamp circuit and protection from electric shock when changing lamps.
FPN: See 410.138 for auxiliary equipment limitations.
Exception No. 1 to (B), (C), and (D): For lampholders of infrared industrial heating appliances as provided in 422.14.
Exception No. 2 to (B), (C), and (D): For railway properties as described in 110.19.