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15 kV clearance issue

15 kV clearance issue

15 kV clearance issue

(OP)
I have a contractor who has located a junction box within 4'6" of the front of my switchgear - contrary to the drawings.  According to NEC 110.34 (A), condition 2 for 7200 volts to ground, we need 5'0".  

What I would like to do is cover or coat the box with insulation to make it Condition 1 for that table, requiring only 4' clearance.  

Any ideas?  We've considered replacing the box with something 6" shallower, replacing it with a fiberglass box, moving the switchgear, moving the box.  None of these can be done.

 

RE: 15 kV clearance issue

The box can be moved.  The contractor may not have enough money to make it happen, but the box can be moved.

RE: 15 kV clearance issue

Move the box.

RE: 15 kV clearance issue

Can you raise it up so it is well above the top of the gear?  If it is just a TJB, there is normally little need to access it after it is installed.   

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