I was asked to give a price on a RV-Motor home park and have some rough drawings (no electrical secondary) and it just shows the parking spaces, Primary feed lines for the Power company and 6 pad mounted transformers throughout the circular drive. They require 3" long sweep PVC 90s to be stubbed out of the fiberglass vaults that the pad mounted transformers sit on. There are 38 parking spaces and 38 three inch pvc 90s shown ...maybe 6 at this transformer... 5 at the next one ... and so forth.
I've never wired one of these parks before...it's easy....but I'm looking for the least expensive way and
easiest...quickest method.
Option #1...
Reduce down the 3" 90s to maybe 1 1/4" pvc and go straight to the metered pedestals. Not sure if I need a
Main Breaker. Pedestals will contain 3 breakers, a 50 amp 4-wire receptacle, 30 amp 120 volt outlet, and one 120 volt GFI outlet. (Haven't priced the pedestals yet)
Option #2
Use a 5 or 6 gang meter pack next to the transformer and maybe a 80 amp main breaker to feed each non metered pedestal. Just requires one 2 1/2" secondary conduit from each transformer to each meter pack...and a lot easier for the meter reader...may be able to eliminate a couple of transformers??
Option #3
Loop one 2" pvc and feeder wire from metered pedestal to pedestal. Need to do a load calculation and see how many could be tied together...this also could reduce the number of transformers.
The RV parking spaces are about 20 feet wide and 50 feet long and on 4.5 acres. The plans do not show the KW rating of each transformer....but I think that six for 38 RV parking spaces is overkill since most heat requirements are
propane and most RV homes are 120 volt/30 amp....
any advice ??
