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Old 11-20-2011, 05:37 PM   #1
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can someone check this work please? (picture)


Hello everyone, my name is Mike, just purchased a house and therefore will be doing alot of renovations/updates and asking alot of questions! First off i am a mechanical engineer and have electrical background but i insist on doing things right the first time and i do not act like i know everything so i do ask for some help along the way.

first off i want to add some shop lights to the unfinished part of the basement; 4 4' shop lights and a single switch on a 15 amp circuit. all the lights are the plug in type so i plan to run boxes in the rafters so each of them can plug in. i plan on using metal octagon boxes with 15 amp tr duplex outlets and a flat metal cover plate. i am using the nm cable connectors like in the picture. i have been told that it is alright to put two nm cables through these connectors. these boxes are 15 in^3 and according to the NEC box fill calc's i should be ok with two 14-2's and a single outlet. my question is that are these cover plates an acceptable way of mounting the outlets? i think i recall a code saying you cannot support the outlet via cover plate but on these the metal tabs are sandwiched between the cover and box as well.

is this setup to code or does someone have another suggestion?


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Old 11-20-2011, 05:50 PM   #2
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To each his own. I have no idea why you would use this set-up iinstead of rectangular plastic nail-on device boxes.

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Old 11-20-2011, 06:17 PM   #3
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There was a change awhile ago that the cover screw could not be the only mounting for the device.

Like Bricc, I would use rectangular device boxes and duplex plates.
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Old 11-20-2011, 07:09 PM   #4
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Thanks for thE quick responses, like I said I am still learing. For the plastic rectangular boxes, can you use nylon cover plates? I thought you can only use those with drywall? Thought you had to use metal in unfinished parts of a house?
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Old 11-20-2011, 07:33 PM   #5
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I've seen the nylon/plastic cover plates used in garages like that and frequently seen them broken.

If you want something sturdy, you could use a 4" square metal box with a single gang metal plaster ring. Then a single metal cover. Like these...



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Old 11-20-2011, 07:53 PM   #6
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Quote:
Originally Posted by Billy_Bob View Post
I've seen the nylon/plastic cover plates used in garages like that and frequently seen them broken.

If you want something sturdy, you could use a 4" square metal box with a single gang metal plaster ring. Then a single metal cover. Like these...




That is a drywall ring. ghetto to use that exposed.


Industrial raised covers are adequate because they attach in three places.

http://www.garvinindustries.com/Elec...ers/1-2-Raised

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Old 11-20-2011, 08:24 PM   #7
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ghetto? (Translation: Tacky?)

I think that looks cool. (Translation: "sick")

Although I think the raised cover looks cool too...
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Old 11-20-2011, 08:26 PM   #8
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I think you are saying that you will not have drywall on the walls.
In that case I recommend getting a single gang, rectangular metal box that has the lugs for the receptacle that you can screw to.
Put a metal switch cover on it and do not use NM cable use MC type cable as Romex type cables are supposed to be covered in some way or buried in the wall under drywall.

Andy.
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Old 11-20-2011, 08:35 PM   #9
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If you want to keep driving the cost up why not use GRC and explosion proof boxes and fittings? At the very least WP boxes and covers should be used. After all, a radiator may spring a leak. Why does a simple wiring job need to be so difficult and expensive? Just asking.
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Old 11-20-2011, 08:45 PM   #10
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Quote:
Originally Posted by brric View Post
If you want to keep driving the cost up why not use GRC and explosion proof boxes and fittings? At the very least WP boxes and covers should be used. After all, a radiator may spring a leak. Why does a simple wiring job need to be so difficult and expensive? Just asking.
Wow. Easy there killer. The guy's learning.

(Oh, and he's an engineer, so he over-analyizes everything. My dad's an engineer, and I hate working with him on simple things)

I would use this one.


Looks cleaner, no need for additional wall plates, plain and simple.
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Old 11-20-2011, 08:54 PM   #11
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The nylon trimplates from P&S can be bent in half and return to shape.
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Old 11-20-2011, 08:57 PM   #12
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Thanks, as far as myself overanalysising, I prefer to call it weighing all options, I am new to wiring thing that are not in a machine so all the info I can get helps. I will probably use metal boxes with the aforementioned duplex covers. Isn't nm cable alright so as long as its stapled to the rafters? This section of basement will not be finished, it's a utility and work room
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Old 11-20-2011, 09:21 PM   #13
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Quote:
Originally Posted by Toofarfromfenwa View Post
Wow. Easy there killer. The guy's learning.

(Oh, and he's an engineer, so he over-analyizes everything. My dad's an engineer, and I hate working with him on simple things)

I would use this one.


Looks cleaner, no need for additional wall plates, plain and simple.
By the time you buy one 4 square and one Garvin cover you could buy 10 23 cubic inch plastic nail-ons. And I wasn't talking to the one who is learning.
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Old 11-20-2011, 09:32 PM   #14
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By the time you buy one 4 square and one Garvin cover you could buy 10 23 cubic inch plastic nail-ons. And I wasn't talking to the one who is learning.
If he wanted to go cheap, He would splice inside the light
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Old 11-20-2011, 09:49 PM   #15
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Brric, what would you use for covers? Plastic?


Any I appreciate all the responses but I belong to a bunch of other forums (hobby) and respect that everyone can get get along there, everyone is entitled to their own opinion so let's all just mellow out guys.

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