UPS to isolation transformer.

[Eric finnen]

We are currently installing a small ups system at a local business. We have 240v to line side of ups and 240v output and would like to install an isolation transformer on the load side to feed a small 120/240 panel for a few critical circuits. There is some debate as to if this is ok.(amongst the office)can anyone tell why we shouldn't configure it this way.

 

[ron]

As long as there is adequate OCPDs, there is no problem adding a transformer on the load side of the UPS.

It is odd that there is a relatively small UPS that is 240V single phase, 2 wire (2 hots). They are usually 3 wire ( 2 hots and a neutral) in and out.

 

[qcroanoke]

We are currently installing a small ups system at a local business. We have 240v to line side of ups and 240v output and would like to install an isolation transformer on the load side to feed a small 120/240 panel for a few critical circuits. There is some debate as to if this is ok.(amongst the office)can anyone tell why we shouldn't configure it this way.

It will be a separately derived system. do your bonding and grounding.

 

[petersonra]

The ups probably needs to be hard wired rather than cord and plug connected.