Im doing a voltage drop calculation for a residential service. Its not very often I do these for residential. The one way length is about 1550 feet to the transformer, the house has a 400A service. When I run the calc for 320 amps, 1550 feet, and with parrell 3/0 copper, the voltage drop comes up at about 11.2%, approximately 26.97 volts dropped.
My question is should I be shooting for a maximum of 3%?
Even if I use parrell #500s, im still going to be around 7% or so, can a residential 400A meter accept wires this large? It doesen't seem practical.
My question is should I be shooting for a maximum of 3%?
Even if I use parrell #500s, im still going to be around 7% or so, can a residential 400A meter accept wires this large? It doesen't seem practical.