class 2, division 2

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victor e

Member
Location
Southern Cali
I have roughed in 1 and 2 gang masonry boxes in a block wall. On the open face of box side is a class 2, division 2 rated area. Are my boxes considered in the area? Do they have to be changed? (impossible now) or are surface mount devices suitable? I've searched the NEC, and cannot get a direct answer for my question. Can anyone help me with this?
 

Coyote

Member
Location
Illinois
I have roughed in 1 and 2 gang masonry boxes in a block wall. On the open face of box side is a class 2, division 2 rated area. Are my boxes considered in the area? Do they have to be changed? (impossible now) or are surface mount devices suitable? I've searched the NEC, and cannot get a direct answer for my question. Can anyone help me with this?


I would say they are not allowed if they are in the CL II Div II area.
502.10 (B) (4) 2008 NEC
 

kwired

Electron manager
Location
NE Nebraska
would the inside of a block wall- encased in cement be considered dust-tight?


Are the block walls filled with concrete, and if not is the box within the wall subject to the class 2 environment?

Whatever covers the flush box opening needs to be dust tight.
 
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