look at the "bonding the neutral " question i posed last week.
hope it helps.
i noticed you said you suspended the xfmr from the steel trusses. i hope you used sprinkler type beam clamps and attached them to the top part of the truss? putting a large load on the bottom of a truss is not allowed in the state i work in, yet, it is rarely caught by the "electrical inspector".
if you are bonding to the building steel it has to be approved by the engineer who designed that building.
[This message has been edited by rizer (edited 03-27-2004).]
