Hedges I See Electromagnetic Fields! Joined Mar 28, 2020 Messages 20,504 Sep 27, 2021 #21 3/0 is 0.06 ohms per 1000', 2/0 is 0.08 1/(1/0.06 + 1/0.08) = 0.034 ohms per 1000' for both in parallel. 100' round trip, 0.0034 ohms. 125A x 0.0034 ohms = 0.43V drop, < 1% of 48V Even for 5x current surge you're fine.
3/0 is 0.06 ohms per 1000', 2/0 is 0.08 1/(1/0.06 + 1/0.08) = 0.034 ohms per 1000' for both in parallel. 100' round trip, 0.0034 ohms. 125A x 0.0034 ohms = 0.43V drop, < 1% of 48V Even for 5x current surge you're fine.
M Maintenance guy New Member Joined Nov 30, 2021 Messages 102 Location US. Dec 11, 2021 #22 It seems to be the 3/0 will have a .4 voltage drop and the 2/0 cable a .5 voltage drop but that is calculated separately @ 45 feet.
It seems to be the 3/0 will have a .4 voltage drop and the 2/0 cable a .5 voltage drop but that is calculated separately @ 45 feet.
