ECN Forum Forums Technical Discussion Electrical Theory and Applications SDS Xo conductor to the disconnecting means

On a Separated Derived System (SDS) of secondary voltage of 480/277 and the Xo terminal is bonded to the case and to a ground rod within the transformer pad opening, is a grounded (Xo) conductor required to be installed to the remote disconnecting means as 240.24(B) [ that is to be corrected to 250.24(B)] requires for services ?

[This message has been edited by Gwz (edited 01-15-2003).]