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Old 03-15-2009, 04:58 PM   #1
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What do you sparkies do about ac disconnects and romex connectors?


I just installed a spare AC disconnect and noticed how the romex connector is in the way when you secure it to the structure. I left it a little crooked and sealed up around it with seal.

What do you guys do about the romex connectors?

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Old 03-15-2009, 05:04 PM   #2
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What do you sparkies do about ac disconnects and romex connectors?


if the romex is legal in the manner you are using it, a bigger hole in the wall/siding will allow the connector to recess into the wall. I only apply silicone on the top and sides of the disco so any water that does get behind the thing can drain away rather than accumulating and eventually running into the wall.

just in case I am misunderstanding this; you are talking about running the romex out the back of the disco, yes?

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Old 03-15-2009, 05:07 PM   #3
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What do you sparkies do about ac disconnects and romex connectors?


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if the romex is legal in the manner you are using it, a bigger hole in the wall/siding will allow the connector to recess into the wall. I only apply silicone on the top and sides of the disco so any water that does get behind the thing can drain away rather than accumulating and eventually running into the wall.

just in case I am misunderstanding this; you are talking about running the romex out the back of the disco, yes?

Yes, out the back. I'm fixing some other sparkies work. He or she pulled nm-b through liquid tight conduit to the AC's, secured the disco to the wall with one screw, and ran the nm-b through the bottom of the disco (means the romex is exposed to outside conditions.

I drilled a 1 inch hole and the connector almost fit into the hole.

Edit-when you mean "legal in the way your using it" do you mean I cannot use nm-b going into the disco because it uses thhn conductors?

Last edited by rgsgww; 03-15-2009 at 05:12 PM.
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Old 03-15-2009, 05:19 PM   #4
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What do you sparkies do about ac disconnects and romex connectors?


I usually put them in "backwards" so the hole doesn't have to be so big.

I'm not sure what they're called, we call them "tomics" but they're 2 piece and fit flat on the back when you put them in backwards.
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Old 03-15-2009, 05:27 PM   #5
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What do you sparkies do about ac disconnects and romex connectors?


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I usually put them in "backwards" so the hole doesn't have to be so big.

I'm not sure what they're called, we call them "tomics" but they're 2 piece and fit flat on the back when you put them in backwards.

I thought about doing that, maybe I should have done that.
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Old 03-15-2009, 05:40 PM   #6
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What do you sparkies do about ac disconnects and romex connectors?


I use the plastic snap in connectors.
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Old 03-15-2009, 05:47 PM   #7
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What do you sparkies do about ac disconnects and romex connectors?


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Edit-when you mean "legal in the way your using it" do you mean I cannot use nm-b going into the disco because it uses thhn conductors?
you cannot use thhn or nm in a wet or damp location application. If it is exposed, it is most assuredly a damp or wet location. Even in conduit, it generally is not legit if outside.
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Old 03-15-2009, 06:13 PM   #8
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What do you sparkies do about ac disconnects and romex connectors?


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you cannot use thhn or nm in a wet or damp location application. If it is exposed, it is most assuredly a damp or wet location. Even in conduit, it generally is not legit if outside.

Thats what I thought, so I need to junction from the inside to thwn into the back of the disco?
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Old 03-15-2009, 06:21 PM   #9
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What do you sparkies do about ac disconnects and romex connectors?


Use a black-button type, sometimes referred to hit-lock:



They pop in your knockout, and then you can mount your disconnect box on the wall. The nubs on the back of the disco box are usually sufficient to provide adequate space for the flat part of the connector behind the box.
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Old 03-15-2009, 06:23 PM   #10
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What do you sparkies do about ac disconnects and romex connectors?


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Use a black-button type, sometimes referred to hit-lock:



They pop in your knockout, and then you can mount your disconnect box on the wall. The nubs on the back of the disco box are usually sufficient to provide adequate space for the flat part of the connector behind the box.

Sounds like a good idea, but, nap said that I cannot use nm-b outside, I know that, but can't I run it from inside the house to the disco?
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Old 03-15-2009, 06:51 PM   #11
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What do you sparkies do about ac disconnects and romex connectors?


I've never had a problem doing it as long as I went right into the back of the disconnect. Then use "W" wire in the whip
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Old 03-15-2009, 07:03 PM   #12
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What do you sparkies do about ac disconnects and romex connectors?


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Sounds like a good idea, but, nap said that I cannot use nm-b outside, I know that, but can't I run it from inside the house to the disco?
i dont think coming to the back of a disconnect is considered a wet location, therefore, romex is perfectly fine
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Old 03-15-2009, 07:04 PM   #13
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What do you sparkies do about ac disconnects and romex connectors?


and i just use a 1/2 male adapter to come into the back of the disconnect
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Old 03-15-2009, 07:17 PM   #14
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What do you sparkies do about ac disconnects and romex connectors?


Thanks for the replies, I did not think it was considered a wet location, though the romex through the liquidtight is a bad thing, I will get to fixing those problems.
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Old 03-15-2009, 08:02 PM   #15
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What do you sparkies do about ac disconnects and romex connectors?


I use snap ins.... but the black buttons, being connectors, keep it legal.

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