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Old 02-18-2013, 09:40 PM   #1
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Cable clamp for 1/2 inch knockout and 10/3 romex?


Having trouble locating what I need. I tried hd online chat and the guy was clueless. It's difficult to even search for this. I need a cable clamp for my inlet box with a 1/2 inch knockout. The 3/8 hole was too small. I thought of just dremeling it to be a little bigger, but don't know if that could cause a problem later on with a sharp edge touching the sheathing. Thanks for any help.

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Old 02-18-2013, 10:06 PM   #2
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Cable clamp for 1/2 inch knockout and 10/3 romex?


http://www.homedepot.com/h_d1/N-5yc1...&storeId=10051

Is thiis what you looking for?
You can use a step drill if the hole in the panel needs to be made bigger.

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Old 02-18-2013, 11:43 PM   #3
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Cable clamp for 1/2 inch knockout and 10/3 romex?


For the half inch fittings the actual KO opening size is 7/8 inches so that is very common item and with standard NM connector as one of the guys left a link.,

The 10-3 NM will fit in there for only single cable

But if you used the 10-3 UF cable forget it you will need larger NM clamp for that cable. ( due it will be flat and pretty wide )

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Old 02-19-2013, 01:49 AM   #4
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Cable clamp for 1/2 inch knockout and 10/3 romex?


Quote:
Originally Posted by joecaption View Post
http://www.homedepot.com/h_d1/N-5yc1...&storeId=10051

Is thiis what you looking for?
You can use a step drill if the hole in the panel needs to be made bigger.
That looks like it will work from the pic, but I have 3/8 ones here and the hole is tiny. I guess I'll just go check at the store. Thanks.
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Old 02-19-2013, 07:07 AM   #5
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Cable clamp for 1/2 inch knockout and 10/3 romex?


Is there a clamp already in the box?
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Old 02-19-2013, 08:01 AM   #6
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Cable clamp for 1/2 inch knockout and 10/3 romex?


Inlet box just has a knockout. No clamps included.
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Old 02-19-2013, 08:43 AM   #7
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Cable clamp for 1/2 inch knockout and 10/3 romex?


I just dremeled it out and it looks like it'll be fine. No sharp edges or anything. I appreciate the help.
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Old 02-19-2013, 10:59 AM   #8
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Cable clamp for 1/2 inch knockout and 10/3 romex?


It's required that you use a clamp to prevent the wire from getting pulled our or rubbing on sharp edges.
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Old 02-19-2013, 11:19 AM   #9
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Cable clamp for 1/2 inch knockout and 10/3 romex?


Quote:
Originally Posted by mikegp View Post
That looks like it will work from the pic, but I have 3/8 ones here and the hole is tiny. I guess I'll just go check at the store. Thanks.
You might have 3/8ths cable end, but they don't make 3/8 electrical male end connectors. 1/2" is the smallest trade size available/allowed.
You should use a trade size 3/4" connector or bigger for a 10/3 cable.
The 3/8 hole is a starter hole for a knock out or to drill it out.

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I just dremeled it out and it looks like it'll be fine. No sharp edges or anything. I appreciate the help.
Sounds good to me.
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Old 02-19-2013, 07:32 PM   #10
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Cable clamp for 1/2 inch knockout and 10/3 romex?


I don't think I made clear what I was talking about. The knockout is 1/2 an inch, but the clamp has a smaller hole for the cable to go through before it can be tightened down. Hope that makes sense. Otherwise I'll post a pic.

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