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Bob, somebody here was asking about running MC outside to an AC unit.....Then the connector question came up.....Well I guess if it never rains there or it is never damp then OK. Sounds like the kind of place I would like to live.
 
dcspector said:
Bob, somebody here was asking about running MC outside to an AC unit.....Then the connector question came up.....
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Greg in this area and many others the use of dry location connectors to leave the bottom of a 3R enclosure is accepted practice.

Seeing as the NEC says we can run MC in wet locations why would you look for a way to fail it? :wink:
 
dcspector said:
Bob. I would say something, especially if I looked at the connector and it is stamped "Dry Only"
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That's the only time you could say anything. MC connectors are suitable for dry or wet locations unless they are marked "Dry Locations". And, as Bob said, the use of a dry location fitting on the bottom of a 3R enclosure is a generally accepted practice where he's at and around these parts as well.

I've seen A/C units fed with MC whips as well as FMC whips. Not the way I would do them, but if the conductors are suitable for wet locations, it's legal and I pass them.
 
dcspector said:
Bob. I would say something, especially if I looked at the connector and it is stamped "Dry Only"
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I agree with Bob Iwire so long as the connector comes in bottom or below terminations of disco


There is a heating contractor in my area that use this method
 
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Pierre C Belarge said:
Listed as suitable for the purpose...there is MC cable listed as suitable for the purpose, here is the link.
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Pierre yes you can always use parking deck MC per 330.10(A)(11)(a).

But you can use 'normal' MC in wet locations under 330.10(A)(11)(c).

As has been pointed out in 330.10(A)(11) it is under any of the three conditions, not all of the three conditions at once.
 
dcspector said:
Connectors?
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Lets say I run MC from inside a dry location run it into a wet location and back into a dry location. Then the connector issue is moot.

Also it's worth taking a look at the words in 348.12(1) as it is much the same issue and may shed more light on the CMPs thinking.

FWIW here in MA they amended 348.12(1) so that FMC is never to be used in a wet location.
 
dcspector said:
So, who said it entered the bottom?
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?

Who said it did not?

In my experience most HVAC hook ups from a wall mounted disconnect to the unit enter the disconnect and the unit from the bottom.


Do you disagree that the CMP is allowing MC in wet locations?
 
iwire said:
?

Who said it did not?

In my experience most HVAC hook ups from a wall mounted disconnect to the unit enter the disconnect and the unit from the bottom.


Do you disagree that the CMP is allowing MC in wet locations?
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No Bob, its there in the NEC. It is unusual to see it, but It is approved, as long as 330.10 are met. The problem I have, is if it entered the side....etc. That was my point! Dry Only connector! I do not FAIL inspections due to my opinion or what I want to see..etc.
 
dcspector said:
The problem I have, is if it entered the side....etc.
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If it enters the side below the live parts I think UL would allow it unless the connector specifically said dry location only.

Just like UL does not require sealing fittings to be used entering the side of a 3R box below the live parts.


I do not FAIL inspections due to my opinion or what I want to see..etc.
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Thats cool, cause it kinda sounded like that was how this was going. :)
 
Jim W in Tampa said:
If mc and connectors are really ok in wet locations why are most of us not using it ?
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Jim we could also us UF for that application, but tradition and pride have a lot to do with the decisions we make. :)
 
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