bkludecke
Senior Member
- Location
- Big Bear Lake, CA
- Occupation
- Retired Electrical Contractor
I know how to calculate voltage drop but this has been bugging me since I started thinking about it. I'm running a feeder - 120/240 volt 1 phase 3 wire 450 feet to a building. The feeder is protected at 150 amps and the assumed connected load is the same.
I'll be pulling in aluminum conductors so I calculated 400 kcmil. Then I got to thinking; that was based on 240 volts. Should I have used 120 volts for the calculation and hence figure on 800 kcmil? This should be an easy one but I've been working too many hours this week.
I'll be pulling in aluminum conductors so I calculated 400 kcmil. Then I got to thinking; that was based on 240 volts. Should I have used 120 volts for the calculation and hence figure on 800 kcmil? This should be an easy one but I've been working too many hours this week.