Running Conduit From Attic To Garage. - Electrical - Page 2 - DIY Chatroom Home Improvement Forum

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Old 01-25-2010, 09:08 PM   #16
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the caulk/whatever, when dealing with PVC must be of the expanding type and there must be an annulus to fill or it cannot squeeze the PVC as it melts.

If there is no filled gap and the caulk is merely sealing any minimal gap left, once the conduit melts, what happens? An open hole. If the caulk was merely on the surface of the rock, it would not have anything to push against so as to pinch the pipe. It would simply expand outward.

so, annulur gap is required. there are minimum and maximum gaps allowed

it must be filled with an expanding caulk or approved material.

and you thougth all us wire jockeys did was yank romex around the house
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Old 01-25-2010, 09:12 PM   #17
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Ok, great - I see how it works now
Thanks for the info
I guess you do have some useful info
You can stay

I haven't rocked the garage yet, exisiting hole is thru old wood siding
So when I rock I'll leave an area to fill
I do have a PVC clean-out, I'm going to box that in with 5/8 rock

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