More info is needed. Is it 240v or 120v, 3phase or single phase, copper or aluminum????I've been looking for the table or formula in the NEC, but I can't find it.
Circuit homerun 350 feet. 20 amp.... 6 wire?? or 10?? I can't remember if you need to derate every 100 or 300 feet. I know you guys know. Thank you in advance!!
VD is based on the ampacity as well as the distance and voltage. a 120 volt motor that draws 10 amps will need a #6 wire. Not sure what you want to know. The VD formula is based on the FPN in the code of 3%. This would appear to be an acceptable voltage.I'm waiting on the builder to get the ampacity of the motor. It's a 120v electric gate. Any you all are right. I was more concerned with the voltage drop than the ampacity. So I guess the real question is.. at what point does the voltage become too low to effectively run the motor without causing damage to the motor or simply rendering it inoperable. Thanks to everyone for all the insight. Right ampacity is not the issue, it's voltage.