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Old 04-01-2013, 01:57 PM   #16
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Adding a couple additional ceiling lights to attic


You don't technically even need the 1x3; you could staple the wire right to the trusses. It's just some extra protection to add the strip (thanks joed for the paint. Hard to explain in just words).

But there becomes a point where you will reach diminishing returns. First, it would take over a 4" long nail to even reach the wire (3 1/2" of truss, at least 1/2" plywood). It might be possible for a stray (long) nail to go right into the box, but it is unlikely. I would not worry about the little bit of free air your wire takes. I just wouldn't cram it clear up against the roof deck plywood.

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Old 04-01-2013, 03:16 PM   #17
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Adding a couple additional ceiling lights to attic


The 1x does not need to be in the rafter part of the truss it could be on one of the riser sections if that works better for you. In basements you need to use the running board or drill holes, so I would do it in the attic as well. It discourages people from using the cable as a clothesline and hanging things on it.
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Old 04-01-2013, 03:28 PM   #18
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Adding a couple additional ceiling lights to attic


I actually need a 6' ladder to reach those boxes so I don't think anyone will hang from it.

I was just worried about puncture. We recently had a new roof installed and even though most nails stick down only an inch or two, there are a select some that stick down 6+ inches. Not sure why. I'm just trying to find the best all-around solution that thinks into the future.
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Old 04-01-2013, 04:14 PM   #19
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Adding a couple additional ceiling lights to attic


You probably could never do too much to protect everything from everything but again, there is a point where even the NEC says we can build stuff. I truly think that with the one-by runner, and the fact that you shouldn't need a new roof for at least 25 years, you should be good to go. Light er up!

Cheers
Mark

By the way, I can't imagine a six inch roofing nail. Must be some bad asss shingles!!!!

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Old 04-01-2013, 11:23 PM   #20
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Adding a couple additional ceiling lights to attic


Our house is only 12 years old but it sustained some Sandy damage on the roof. We didn't want to ever worry about it again so we had the 50-year GAF Timberline HD shingles w/ deck armor, weather watch ice and water shield, drip edging, and timbertex snow country ridge venting installed.

I figured it out though - the miscellaneous long nails were only around the rafters, must have been where they missed nailing the plywood into the roof.

Alright, back on topic - I have the boxes and fixtures installed. My only issue was when I roughed in the wiring between the boxes I short changed myself - only pulled about 6-7 inches out of each box. When I went back to remove the sheathing I noticed I only had 2-3" to work with which made installing the fixture rather tight. I was able to do it, but there wasn't a lot of play inside the box.

Looking back, I realize I should have pulled about 12" or so through each box. Is this an issue (IE code violation of some sort). Or more just annoying but legally acceptable?

Each box only has about a 1/2" of sheathing (just enough to poke through and be clamped down inside the box, the rest is wire.
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Old 04-01-2013, 11:40 PM   #21
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Adding a couple additional ceiling lights to attic


Quote:
Originally Posted by adgjqetuo
Alright, back on topic - I have the boxes and fixtures installed. My only issue was when I roughed I the wiring between the boxes I short changed myself - only pulled about 6-7 inches out of each box. When I went back to remove the sheathing I noticed I only had 2-3" to work with which made installing the fixture rather tight. I was able to do it, but there wasn't a lot of play inside the box.

Looking back, I realize I should have pulled about 12" or so through each box. Is this an issue (IE code violation of some sort). Or more just annoying but legally acceptable?.
NEC 300.14 The minimum length of conductors, including grounding conductors, at all boxes shall be 6 inches and extend at least 3 inches outside the box.
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Old 04-02-2013, 07:55 AM   #22
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Adding a couple additional ceiling lights to attic


Yeah...that's what I was afraid of. To be on the safe side, I'll have to re-take the fixtures apart and check out the distances I have.

Currently the fixture has two screws for Neutral and two for Hot in the back that I attached each wire to.

If in the event they are too short - I don't have to run all new Romex correct? I can just pig-tail it like illustrated below to make the runs a little longer?

FYI - the fixture and box are both plastic and do not have a ground screw which is why it's capped off below.
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Old 04-02-2013, 08:11 AM   #23
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Adding a couple additional ceiling lights to attic


In my opinion you should install the fixtures (and receptacles) like your drawing anyway.

I have seen many more short fixture wires than long ones in my 30 odd years in the trade. While a PIA to work with, they will work. It is harder to insure a good pigtail simply because it's harder to get everything lined up and the wirenut twisted on well. It's really your call whether to re-do the wire. However, when you get the wirenut installed, give every conductor a pretty good pull and see if you can pull it out of the wirenut. If you can pull any of them out, do it again. The splice will NOT come apart if done right.
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Old 04-02-2013, 08:21 AM   #24
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Adding a couple additional ceiling lights to attic


+1

Keep them off the top chords for safety.
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Old 04-02-2013, 08:31 AM   #25
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Adding a couple additional ceiling lights to attic


Thanks -


Yeah, I've re-wired some switches and outlets in my house this way - ones with multiple wires that builder used the screws and back-stabs for. I usually use my pliers and twist all three ends together to get them started first then add the lug until its tight and finally ensure none of the ends are exposed out the back and none come out.

I just put my ladder away last night so I may wait until I have to change a bulb or something to make the correction - it's a PITA to get the latter up into the attic. It sounds like more of a nuisance issue rather then a safety issue.

Unless you guys think otherwise?

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