conduit connection to box


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Old 03-07-14, 05:28 PM
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conduit connection to box

Ok, so 1 more question.

I need to connect 1.5" Conduit to the main service panel. The threaded male connector is not long enough to reach through the wall and the LB is not long enough to reach through from the outside to use a glue in.

Should I knockout the next size up so that I can put the female/glue end through the wall and glue it to the LB? I don't think that would be too secure though...
 
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Old 03-07-14, 06:35 PM
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You just cut a short piece of the PVC conduit to glue into the threaded adapter and reach through the wall to the PVC LB.
 
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Old 03-07-14, 10:35 PM
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I don't Think I am describing the the situation well. The threaded adapter should be outside the box with only the threads entering the box, correct?

In my case, there is only 1/2" of plywood between the back of the box and the outside of the house. So in order to install the threaded adapter I would have to cut a slightly larger hole in the plywood then in the knockout. BUT then the LB would not sit flat against the siding...

If that doesn't make sense then i can try to take pics tomorrow.
 
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Old 03-08-14, 12:12 AM
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Conduit to panel

Posted by: CasualJoe
You just cut a short piece of the PVC conduit to glue into the threaded adapter and reach through the wall to the PVC LB.
Something like this:
Name:  Conduit through wall.jpg
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Old 03-08-14, 07:22 AM
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You need a 1 1/2" PVC box adapter. It installs from the inside the box and it glues directly into the hub of the LB.

Example:
https://www.platt.com/platt-electric...spx?zpid=69107
 
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Old 03-08-14, 09:58 AM
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there is only 1/2" of plywood between the back of the box and the outside of the house. So in order to install the threaded adapter I would have to cut a slightly larger hole in the plywood then in the knockout. BUT then the LB would not sit flat against the siding...
No problem, the LB does not have to sit flat against the siding. Just bend an offset in the end of the conduit that enters the bottom of the LB and the conduit will be flat on the wall.

OR

Get a connector that Tolyn suggested, but I think you'll still need to bend an offset in the conduit.
 
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Old 03-08-14, 10:57 AM
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The glue in connector would be perfect fit but does not seem that secure as the "flange" on the connector just barely catches on the edge of the existing knockouts. ...if the flange was bigger than it would work great

Or a threaded adapter with adapter male glue in end. So I could glue it directly to the LB...but I haven't seen one of those.
 
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Old 03-08-14, 12:00 PM
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If it just barely catches then your KO is larger then for 1 1/2" pipe. Perhaps it is 2"?
 
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Old 03-08-14, 12:56 PM
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I'm sure it is 1.5" knockout as a piece of conduit just barely slides in. This is the glue in adapter that doesn't seem to be very secure.
 
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Old 03-08-14, 01:07 PM
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I'm sure it is 1.5" knockout as a piece of conduit just barely slides in
It should fit loosely because the outside of the adapter is larger than the conduit.
 
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Old 03-08-14, 01:54 PM
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The outside of the connector is the male part that fits into an LB
 
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Old 03-09-14, 09:23 AM
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Really, it doesn't need to be that secure. It is not making any type of mechanical connection, it is just protecting the wires. You do need to glue it in though.
 
 

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