Can I install a 277 to 120 step down transformer in a lighting circuit to run a tv. The only circuits nearby are 277 lighting loads and I need to run a single tv. Is there anything in the code that says I cannot or is there any reason this would be bad for the tv? Not sure it’s feasible to get 120V to this tv if ai can’t go the transformer route.

thanks

 

Where are you that you have 277v lighting loads?

 

Where are you that you have 277v lighting loads?

Retail space. Tv is to loop a camera feed back, so that people can see themselves being recorded.

 

It should not be a problem. Just remember the rating is in VA.

 

Most of the industrial lighting circuits I have come across in N.A. use a 208 3 ph for each phase 120v to neutral.

 

Not where I worked. We had 120, 208, 277 single phase; 208 3 phase and 480 3 phase.
The 4xx 3 phase ran 32 water to air heat pumps and the building HVAC air compressor and the building chiller.
I think the exhaust hoods were 480 3 phase as well.
The main power room had lots of motor starters. I think we had a ~10kV feed.
So, basically the stuff belonging to the building infrastructure was 480 and 277

We had some 208 60A 3-phase (2 ckts), 90A 3 phase each for two pieces of equipment. Then 208 3 phase for a mill and shop air compressor.

This was a Y configuration.

The building we moved from was 240 V, high leg delta. It caused some grief.

 

Most of the industrial lighting circuits I have come across in N.A. use a 208 3 ph for each phase 120v to neutral.

227 Volts is the input power of choice for most industrial and commercial applications. High voltage lighting is better from an efficiency standpoint. Higher voltage less amps, less amps smaller wire.

 

It should not be a problem. Just remember the rating is in VA.

Good call. Glad you reminded me. That did make this project get a lot more expensive.

 

227 Volts is the input power of choice for most industrial and commercial applications. High voltage lighting is better from an efficiency standpoint. Higher voltage less amps, less amps smaller wire.

A side benefit is it keeps the pilfering down of things like florescent ballasts.

 

A side benefit is it keeps the pilfering down of things like florescent ballasts.

Though it wouldn‘t make much difference if they were being weighed in for scrap!