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post #1 of 16 (permalink) Old 02-20-2014, 11:47 AM Thread Starter
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junction box wiring

Im putting in some juntin boxes on existing hook ups and adding on short run to a exhaust fan. i got some 4 inch metal boxes and the push in type connecters do i need to put cable clamps on the wires to pass code? i looked at the area all around in home depot where i got the boxes and didnt see any clamps there? thanks

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post #2 of 16 (permalink) Old 02-20-2014, 01:16 PM
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Re: junction box wiring

I would imagine you are using romex? If so, you will need romex connectors. 3/8 romex connectors for 1/2 inch knockouts on a 4" square box. Always use the proper connectors when doing any electrical work. If this on a 20A breaker, the wire needs to be 12ga.

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post #3 of 16 (permalink) Old 02-20-2014, 01:17 PM
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Re: junction box wiring

I need to add I presumed this is all 110V.

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post #4 of 16 (permalink) Old 02-20-2014, 04:32 PM
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Re: junction box wiring

Also while using a metal box to meet code you have to use a ground screw to bond the box and all junction box's must be accessable.
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post #5 of 16 (permalink) Old 02-21-2014, 12:21 AM
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Re: junction box wiring

Quote:
Originally Posted by mallardmaniac
do i need to put cable clamps on the wires to pass code?
Yes

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post #6 of 16 (permalink) Old 02-21-2014, 12:26 AM
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Re: junction box wiring

Quote:
Originally Posted by mallardmaniac
i looked at the area all around in home depot where i got the boxes and didnt see any clamps there? thanks
Please explain what types of clamps you are referring to

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post #7 of 16 (permalink) Old 02-21-2014, 02:01 AM Thread Starter
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Re: junction box wiring

the clamps that keep the cable from being "pulled" its 110...yellow cable yes 1/2 in knockouts on the box..it says on the wire...12-2 something about 600v ground..bed bath blah blah blah on another note the bathroom initially didnt have an exhaust fan since im putting one in does it have to flow outside or can it blow to the attic where there is a ridge vent and side vents? not good wx to be up on the roof installing roof vents

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post #8 of 16 (permalink) Old 02-21-2014, 02:08 AM
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Re: junction box wiring

Sounds like you need romex connectors for your box's, there two screw connectors with a lock nut lowes,home depot any hardware store will carry them, You can vent the exhaust hose out the soffit not code but it will get the job done.
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post #9 of 16 (permalink) Old 02-21-2014, 10:29 AM
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Re: junction box wiring

Do not vent anywhere but outside. Spend a couple dollars on a vent to mount and save yourself from spending alot of money on mold remediation and repairs later. Do it right and save yourself some money and headaches later.

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post #10 of 16 (permalink) Old 02-21-2014, 10:31 AM
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Re: junction box wiring

You don't need to install a roof vent. You can get a vent to mount on the side of your house.

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