It's 200 feet from a ltg contactor to a lite pole, 400 feet to the next pole, and 300 feet to the last pole. You run #1 AL to feed a total of 6- 1000 watt HID pole heads (277 V). All is as engineered, should work fine. Only a 30 Amp ckt.
What if the 200 feet from the contactor to the first pole is only able to be #6AL due to an undersize conduit. How much of the ability of the circuit to accomodate the distance is lost.
I'm really looking for the general concept here, maybe even better asked by saying what if I ran #12/2 Romex 100 feet, then spliced it to 200 feet of #8/2 Romex and hooked up a 120 V table saw. How bad did the 100 feet of #12 hurt the circuits ability to keep the voltage up?
Does the oversized wire need to originate at the source?
