Electrical Panel ?
If the phase to phase voltage is 480v. That means phase to neutral would be 277v? Because 277 x 1.732 is 480v.
The most confusing thing to me is that in a residential home. You would run two legs to a dryer for a total of 240v single phase.
So if I run two phases of 480v to something, wouldn't the voltage be 480 x 1.732 which is 830 volts?
- Anonymous2 months ago
in reality there is no phase to phase
voltage of 480V anywhere in the world
All equipment will simply blow up
at such high voltage
- charlatanLv 72 months ago
voltage between ANY two phases = 480
voltage between A phase and neutral = 480/(3^(1/2))
"So if I run two phases of 480v to something, wouldn't the voltage be 480 x 1.732 which is 830 volts?"
- billrussell42Lv 72 months ago
yes, 480/√3 = 277 volts
or 480√3 = 830 volts
From your previous question.... did you actually measure this voltage? that is the easiest way to resolve this.
Yes, in North America, residences are supplied with either:
240 volts split phase, 120 volts each line
two legs of 208 volts three phase, with 120 volts each phase, and 208 volts between the two.
large homes may be supplied with all three phases but still 120 volts each phase, and 208 volts between any two.
Any higher voltages would result in lights and appliances being damaged, and probably fires.
note that the rating on a panel does not tell you what the voltages are.... just that they are less than the rating.