transfer switch

[bark]

I'm installing a 600 amp single phase transfer switch. The existing switchgear is a two piece 600 amp board. The utility is connected to buss in the left side of the gear, there are CT's. The transfer switch will be located in a room directly behind the switchgear. Now if we take a small piece of buss out and extend the utility, unfused, wire to the transfer switch, from the load side of the CT's, then come back from the transfer switch to the switchgear, the buss, won't that be using the existing switchgear for a j-box? Also the neutral is a solid piece of bussing, If I'm not mistaken, we will have to cut the buss in order to isolate the neutral, for the existing switchgear is now a sub panel. The transfer switch has a 600 single phase breaker for the utility cables.

Any ideas?

Thanks

 

[iwire]

Any ideas?
Thanks

Is it a service rated transfer switch?

Will the AHJ accept running service conductors further into the building?

Will the AHJ accept your modification to the switch gear without some engineering documentation?

You will have to reroute the GECs over to the transfer switch.

 

[nakulak]

we have been involved in scenarios where it would have been nice to refeed out of gear and come back in like that, or saved money to do so. It is not necessarily a violation depending on ahj. However, it is not best practice. We have found that providing a disconnect for normal power, a disconnect for emergency/standby power, usually before the ats provides maximum safety for firefighters who have to enter the facility, leaving nothing to chance for them so that they know the facility is deenergized. I have come to view this as best practice and I try to install like this always.