Working space.

[electricalist]

We have a new install.
Drawings show 480 v 500 amp fed xfmr. Approx 7' length x 5' width.
Were measuring something for equipment drops, and see that the existing equipment is closer to the location for the xfmr than drawings show.
Equipment is 9' from the wall. Xfmr goes on that wall. That's 4' clearance but not realistically.
Equipment can never move.
What's my real working space?
Is the customer obligated to fund a new location if it needs to be done?
Thanks

Xfmr is top right

 

[Carultch]

We have a new install.
Drawings show 480 v 500 amp fed xfmr. Approx 7' length x 5' width.
Were measuring something for equipment drops, and see that the existing equipment is closer to the location for the xfmr than drawings show.
Equipment is 9' from the wall. Xfmr goes on that wall. That's 4' clearance but not realistically.
Equipment can never move.
What's my real working space?
Is the customer obligated to fund a new location if it needs to be done?
Thanks
Xfmr is top right

It looks like your transformer is opening up to the SIDE of the equipment that is 9 ft from the wall. The SIDES of your equipment make your work space such that it follows Condition 2, instead of Condition 3.

Condition 3 is for your common aisle situation, where equipment on both sides has doors that opens up to one another.
Condition 2 means that you have a conductive "wall" behind your equipment, and it is grounded. Or fence/door/gate, the back/sides of other equipment, plumbing equipment, etc.

In applications that are between 150V and 600V nominal to ground, condition 3 is 48" and condition 2 is 42". This gives you 6 spare inches to work with in your placement of the transformer.

 

[electricalist]

Thank you sir.