Question,
If a conduit passes completely through a C1/D1 or C1/D2 boundry, without fittings, unions, etc., what purpose does having to extend an additional 12" beyond that boundry without no fittings, etc, in order to not require a seal-off (501.15(A)(4)(Excp.1) and (B)(2)(Excp. 1) serve, when you can run conduit, originating and staying, outside a boundry within an 1" of a boundry and no seal is required. Practically speaking, this simply doesn't make a lick of sense. I have AHJ's who won't bat an eye with a counduit installed within in an 1" as long as the conduit doesn't enter/cross the boundry.
Secondly, I also have had AHJ's require a second sealoff at or above the boundry, if in a vertical run, the seal is installed within the boundry. This is said to based on the potential that gases could potentially enter the conduit above the seal and therefore the enclosure. Yes, it is GRC, (actually PVC Coated GRC). Thoughts?
thanks
If a conduit passes completely through a C1/D1 or C1/D2 boundry, without fittings, unions, etc., what purpose does having to extend an additional 12" beyond that boundry without no fittings, etc, in order to not require a seal-off (501.15(A)(4)(Excp.1) and (B)(2)(Excp. 1) serve, when you can run conduit, originating and staying, outside a boundry within an 1" of a boundry and no seal is required. Practically speaking, this simply doesn't make a lick of sense. I have AHJ's who won't bat an eye with a counduit installed within in an 1" as long as the conduit doesn't enter/cross the boundry.
Secondly, I also have had AHJ's require a second sealoff at or above the boundry, if in a vertical run, the seal is installed within the boundry. This is said to based on the potential that gases could potentially enter the conduit above the seal and therefore the enclosure. Yes, it is GRC, (actually PVC Coated GRC). Thoughts?
thanks
