ECN Forum Forums Code Related Discussion Canadian Electrical Code Topics Can I use a transformer ground as a bond?

OK,
What about this. You run a 4 conductor teck cable and use one conductor as the transformer ground. What do you do with the bonding conductor in the cable.

This would be something you would run into when you upgrade a 208V sub panel to a 600V feed with a step down transformer and use the existing cable.

I would guess you would ground one one of the bond conductor and isolate the other?