What is the acceptable variation in voltage range for the high leg of a 120/240 3 Phase High Leg Delta service panel?
The 120 volt legs both read at 120 volts, but the high leg measures at 248 rather than 240. So the voltage across the high leg to neutral is not 208 volts but measures at 217 volts.
I realize this is only 4.3% over 208, but I am installing a new circuit for a 208 volt conveyor toaster for a restaurant and am wondering if connecting the 208 volt equipment to 217 volts will shorten the lifetime of the heating elements of the conveyor toaster.
If this is an actual concern, then what would be a the recommended approach to correct & lower the 217 voltage down to 208 volts for this circuit? Or is 217 volts in the acceptable range of voltage variation for the 208 volt heating elements of the conveyor toaster? (The product documentation does not give a + or - voltage range for the unit.)
Any info or tips appreciated, Thanks
The 120 volt legs both read at 120 volts, but the high leg measures at 248 rather than 240. So the voltage across the high leg to neutral is not 208 volts but measures at 217 volts.
I realize this is only 4.3% over 208, but I am installing a new circuit for a 208 volt conveyor toaster for a restaurant and am wondering if connecting the 208 volt equipment to 217 volts will shorten the lifetime of the heating elements of the conveyor toaster.
If this is an actual concern, then what would be a the recommended approach to correct & lower the 217 voltage down to 208 volts for this circuit? Or is 217 volts in the acceptable range of voltage variation for the 208 volt heating elements of the conveyor toaster? (The product documentation does not give a + or - voltage range for the unit.)
Any info or tips appreciated, Thanks