I have recently run into a discrepancy over voltage drop in large service entrance wire and curious how you guys are calculating it. DC power seems pretty basic but this would be 60hz AC current.
Example would be 4/0 Aluminum. Looking for the hard calculations. One that is indicated is (2*L * R *I)/1000. I don't think this is accounting for AC but rather DC current. Can someone sharper than me clarify correct calculations, not just an NEC table? Concerns with the wire are not the wire heating but rather the Vdrop due to the run length.
Thanks
Example would be 4/0 Aluminum. Looking for the hard calculations. One that is indicated is (2*L * R *I)/1000. I don't think this is accounting for AC but rather DC current. Can someone sharper than me clarify correct calculations, not just an NEC table? Concerns with the wire are not the wire heating but rather the Vdrop due to the run length.
Thanks