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I am working on a RV Park and I have a question.
I plan on installing 4/0 quadraplex AL URD cable to 10 pedestals on a 200 amp circuit and downsizing the wire to 2/0 Quadraplex AL URD cable for the last 4 pedestals. I have calculated voltage drop and everything is below 4%. Table 310.16 says 4/0 AL @75d is only good for 180 amps. But I also found a loophole in annex B table B.2.9 for triplex direct burial cable underground cable. My question is based on this table is the 4/0 AL URD cable sufficient to supply the 10 sites?
Calculated load and VD is attached.
I plan on installing 4/0 quadraplex AL URD cable to 10 pedestals on a 200 amp circuit and downsizing the wire to 2/0 Quadraplex AL URD cable for the last 4 pedestals. I have calculated voltage drop and everything is below 4%. Table 310.16 says 4/0 AL @75d is only good for 180 amps. But I also found a loophole in annex B table B.2.9 for triplex direct burial cable underground cable. My question is based on this table is the 4/0 AL URD cable sufficient to supply the 10 sites?
Calculated load and VD is attached.
