120v/240v Panel

[templdl]

I do very little residential work. Using a 2P breaker is considered 208V single-phase, not 240V. 240V sounds weird to me.

The only way that I'm aware of in order to get 208 single phase is with a 208 y/120 3ph4w supply. With this system you can feed a 208 1ph2w load from the line to line. To do this you would install a 2p breaker in a 208y/120 3ph4w panel. .for 120v 1ph2w from a line to neutral you instal a 1p breaker which would proved 120 between that line and the neutral.

 

[ASG]

The only way that I'm aware of in order to get 208 single phase is with a 208 y/120 3ph4w supply. With this system you can feed a 208 1ph2w load from the line to line. To do this you would install a 2p breaker in a 208y/120 3ph4w panel. .for 120v 1ph2w from a line to neutral you instal a 1p breaker which would proved 120 between that line and the neutral.

Correct. This is what I do almost exclusively in commercial spaces. Pretty much nothing is 240V.

 

[jumper]

the only time we have delta panels are to feed 3 pole mechanical equipment. Those kind of panels just don't really come up in commercial work.

Maybe in your area, but for many of us Deltas are pretty common.

 

[kwired]

Maybe in your area, but for many of us Deltas are pretty common.

And there is a lot of smaller (load wise anyway) commercial spaces that are just supplied with single phase 120/240 volts.

I have been around school buildings, nursing homes, retail stores, churches, with 400, 600, 800 amp single phase services.

Converted a few of them to three phase as well when they decided to build additions or add major loads.