ElectricNewEngland
Member
- Location
- New Hampshire
I have two Gas Unit Heaters 1/2HP at 120V, which equals 9.8amps each. The farthest heater is 225 feet away from the 120V panel feeding it. Using #8 copper conductors gives me a voltage drop of 2.9%. My company doesn't want to go higher than 3.0% voltage drop, so I want to use #6 copper conductor which will reduce my voltage drop to 1.7%.
Can I use the #6 copper wire with a 20A1P breaker? If not, can I use #8? How would I even know how to look this up? Is there a table in the manufacturer's catalog somewhere? We use Square D breakers, if that helps.
Thanks.
Can I use the #6 copper wire with a 20A1P breaker? If not, can I use #8? How would I even know how to look this up? Is there a table in the manufacturer's catalog somewhere? We use Square D breakers, if that helps.
Thanks.