Mike Dolt Enterprises
Mike Dolt Enterprises
User: AK907, Location: Fl
Asked on: Friday, March 18, 2011 at 5:39 am EDT
Answered on: Tuesday, May 14, 2024 at 2:58 am EDT
Question: Hey I have a dumb question. If I have a 20A breaker and I need to upsize my conductors for voltage drop because its a long run, and I have say 50ft of #12 and 100ft of #10, do I need to install the #10 at the begining of the circuit at the breaker and the #12 at the end? Or is the voltage drop calculated based on the total length of wire and wire size and placement is irrelevant?
The placement of the wire sizes is irrelevant for voltage drop calculations. Voltage drop is calculated based on the total length of wire and the wire size.In your example, both the #12 and #10 conductors have the same voltage drop per foot. So, the voltage drop for the entire circuit will be the same regardless of which conductor is installed at the beginning or the end. Flag for review