225.31 & 225.32 Service rated disconnect switch is Required at the Barn.
250.32 A Equipment Grounding wire may or may Not be required.
See 250.32 (B)(2).
If Ground wire is Required Neutral Floats at second Panel.
Where it is NOT required Neutal must be bonded there . in either case a Grounding Electroid is required at the second Building. Read 250.32 (a)
If Ground wire is Required to second panel see 250.122 Adjust for Voltage drop if Phase conductors are upsized.

Yoopersup

Last edited by Yoopersup; 05/28/08 09:46 PM.