working space

[Big Guns]

In an electrical closet with electrical panels voltage 208 and the room is conrete all around but only 24 inches deep, if a door is in stalled in front of panel do you still need 40 inches of clearence Table 110.26 (A) (1) condition 2

 

[kwired]

I don't see where you are getting 40 inches from.

If no grounded parts on opposite side of working space minimum clearance is 3 feet for all three conditions (assuming your 208 volts you mention means 120/208). Table 110.26 A 1 is based on voltage to ground. You do need to have the door at least 30 inches wide or equipment width whichever is greater if the closet does not provide 36 inches in front of the equipment - and that may be subject to interpretation by some AHJ's.

 

[charlie b]

I am not sure I understand the question. I will say that if you don't have the required 36 inches of clearance when the doors are closed, but if you do have it when the doors are open, taking credit for the space within the closet and some additional space in the hallway, then that is acceptable.

 

[Big Guns]

I don't see where you are getting 40 inches from.

If no grounded parts on opposite side of working space minimum clearance is 3 feet for all three conditions (assuming your 208 volts you mention means 120/208). Table 110.26 A 1 is based on voltage to ground. You do need to have the door at least 30 inches wide or equipment width whichever is greater if the closet does not provide 36 inches in front of the equipment - and that may be subject to interpretation by some AHJ's.

Concrete, brick or tile is considered grounded structures so condition 2 applies not condition 1, the question is if there is a door in front of said gear or panel does condition 2 or any conditon apply..

 

[charlie b]

. . . the question is if there is a door in front of said gear or panel does condition 2 or any conditon apply..

The applicable Condition will not depend on the characteristics of the door, but rather on whatever type of surface is behind you, as you stand in the open doorway looking at the gear. The doors are not relevant.

 

[bluesmoke...oops]

Concrete, brick or tile is considered grounded structures so condition 2 applies not condition 1, the question is if there is a door in front of said gear or panel does condition 2 or any conditon apply..

Yes but if you just have 120/208V panels than your nominal voltage to ground is only 120V, leaving your minimum clear distance at 36 inches. (0-150V)

 

[kwired]

Concrete, brick or tile is considered grounded structures so condition 2 applies not condition 1, the question is if there is a door in front of said gear or panel does condition 2 or any conditon apply..

Yes but if you just have 120/208V panels than your nominal voltage to ground is only 120V, leaving your minimum clear distance at 36 inches. (0-150V)

What he said.

I don't see where you are getting 40 inches from.

If no grounded parts on opposite side of working space minimum clearance is 3 feet for all three conditions (assuming your 208 volts you mention means 120/208). Table 110.26 A 1 is based on voltage to ground. You do need to have the door at least 30 inches wide or equipment width whichever is greater if the closet does not provide 36 inches in front of the equipment - and that may be subject to interpretation by some AHJ's.

I could have worded it better but what I meant was with max 150 volts to ground all three conditions require 3 feet of clearance so I was questioning where 40 inches was coming from since we supposably have less than 150 volts to ground in the OP.