DIYbanter - View Single Post - grounding lightbulbs, fuses and other parts

amdx[_3_]

On 7/15/2014 1:20 PM, wrote:

Overhead commercial lighting voltage is 277 so its less current and less dangerous, but what if a contractor is still more picky?

I'd like to correct your thinking above.

While it is true, that a light using 277 Volts will draw less current
than a light using 120 Volts, assuming equal wattage lights,
it is false, that 277 Volts is safer than 120 Volts.

The 277 volt line may only deliver 1 amp to the light, it most certainly
could deliver several hundred amps for a short time and 20, 30 or even
50 amps continuously.

Mikek