tool to drill joist holes and hole size

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Old 02-06-13, 08:43 PM
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tool to drill joist holes and hole size

It looks like I have to drill many holes to lay those #12 romex cables through rooms.
Can you guys recommend any drill bit for this purpose? something like this:6 Pieces Wood Boring Bit Set-DW1587 at The Home Depot ?
impact drill or regular drill?
good hole size for 3 #12 romex cables, 1", 7/8" or 3/4"?
 
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Old 02-06-13, 09:02 PM
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Regular drill for drilling in wood.

I like my Greenlee Naileater. Its lifetime warranty is just one reason. The flatter drilling angle and comfortable working clearance from the framing are a couple of others.

I drill one 7/8" hole for every two cables. Third cable? Second hole. Centered front-to-back on a stud, top-to-bottom on a joist.
 
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Old 02-06-13, 09:48 PM
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Are you saying 2 cables one hole because of the code or because of the hole size? I remember somebody said 3 cables together in one hole is allowed.
 
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Old 02-07-13, 04:12 AM
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I know they are expensive, but you may can rent one of these to make things go easier.

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Old 02-07-13, 06:18 AM
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I grew up using a brace and bit. You haven't lived till you have done that in an attic in August with the brace set to ratchet because you can't get a full swing. Ahhh the good old days.
 
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Old 02-07-13, 06:51 AM
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Those spade bits will take forever. Just pick up a short 7/8" auger bit. It'll bore through a stud in about 5 seconds. The Naileater is definitely professional grade but there are other brands that are less expensive.
 
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Old 02-07-13, 07:42 AM
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Drill

Rent one of these. You may like it well enough to buy it. Not promoting HD. It is what came up when I Googled "right angle drill".

Milwaukee 1/2 in. Heavy Right-Angle Drill Kit 3107-6 at The Home Depot
 
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Old 02-07-13, 08:03 AM
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3 cables in one hole may be allowed - IDK. I don't care for it for a number of reasons, including ease of pulling, minimizing kinking and reducing heat buildup.
 
 

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