Can run 208v heater on 240v.
Will a 240v heater run on 208v.
Putting it all together.
Some motors are actually dual rated for both 50 and 60 hz with corresponding different speed and amp ratings.
When you run 120 208v single phase power into an isolation transformer the two individual hot conductors of 120v are combined into one 208v waveform.
240v is the line to ground of a 415 240y system.
220v is a line to ground voltage of a 380 220y system.
For example 120 240 and 120 208 both provide 120v on standard receptacles but when using a dryer or hot water heater for example that appliance would be using 240v or 208v respectively.
208v commercial electric water heaters previously purchased great for a variety of commercial installations these efficient units are built to last providing temperature controlled water where and when it s needed.
The important dfference othere than maybe having too high or low a voltage is that one of the input leads is either ground referenced or both are hot.
Say the tank draws 20 amps.
20a x 208v 4160 watts.
It is more likely a 208v 230v or 240v motor.
208v is a line to line voltage of a 208 120y system.
20a x 240v 4800 watts.