liquidtite
Senior Member
- Location
- Ny
I was changing about 20 bad ballast in a huge commercial building .I new their was 277 lighting but wasnt shure what floor I asked journeyman what was the voltage and he told me 120v I looked at the hot colors and were all 120 colors black red blue. We were not able to turn off circuit either bc could not trace it or computors or what not were on same circuit .So I began to replace bad ballast live shure enough the last ballast I had to change I eneded up getting hit and I new right awaydo to the intensity that the voltage was not 120v.I know that it is my fault for not using a volt meter and checking for volts,but When I asked him why they didnt use 277 colors he said by code you only have to use 277colors when their feeders, is this true