Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
I see this listed both ways a lot ion different projects. Why are these different voltages used? Thanks.
They are the same voltages the higher is the nominal voltage, and the lower voltage the nameplate voltage.
Five different voltages at LV.
From a British POV that seems just such a muddle.
We get by with just 400V three phase from which 230V single phase is derived.
Why do you need/have so many?
I can understand the 208/120.
But then what needs 208 or 240 or 277?
Nor would I expect them to.The evolving of standards over the years, simply you can not expect everyone to go out and buy all new equipment just because you want to no longer supply a system voltage,