I'm inspecting an RY Park with 20 sites .
Each has a 50A 120/240 30A 120 and 20A GFI Recepticle with in and out lugs and breakers.
There are 2 400A Service disconnects.
One has 2 200A feeder circuits
The other 1 200A feeder circuit and 1 60A for the sewerage system.
I have asked for a schematic showing by site number which sites are on which feeder.
I opened several sites randomly and found 4/0 AL feeders to and from the in/out site boxes.
But on the far end he reduced the feeder size to #3 AL for the last site .
The site 50A breaker would protect the conductor on the load side/
? Could this be considered a legal tap over 25 feet for this application ?
I have studied this all very carefully and its not very clear where taps can and can't be used.