AC Split Unit Install

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jzadroga

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Hi all, I have an install for a split AC System in a home. The HVAC installer is trying to have me use a tray cable that is approved for direct burial and sunlight resistant. From what I can find in the code, I don't think this cable is approved for instalations in a home or conceled in walls. Am I mistaken? Can I staple it to the outside of the house? I see nothing that permits stapling but I also see nothing that prohibits it.
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I'm in Massachusets and only an electrician can install the wiring. I believe he might be able to do the low voltage if he pulls an electrical permit but there is no low voltage in this case. I think he is trying to get me to buy it from him but thats not the question. I dont think I can use this wire in a home.
 
jzadroga said:
... The HVAC installer is trying to have me use a tray cable that is approved for direct burial and sunlight resistant. From what I can find in the code, I don't think this cable is approved for instalations in a home or conceled in walls. Am I mistaken? ...
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Tray Cable (Type TC) is not permitted to be installed outside of a raceway or cable tray system except in an industrial environment [336.12(2)]
 
Thats what I thought but wanted to verify. Since the HVAC guy was trying to supply the wire I figured I'd better check it out. further searching on honey wells website shows this cable as a mini split cable but i cant see where it is worth using. If it has to be in a raceway than why not just use thwn. It would bee cheaper and easier I think. For my install 14/3 UF cable is cheaper and meets code.

Has anyone else heard about this cable?
 
Smart $ said:
Tray Cable (Type TC) is not permitted to be installed outside of a raceway or cable tray system except in an industrial environment [336.12(2)]
Click to expand...

What would be a good reason for this when looking at the label on the cable?

THHN-OK
600 volt-OK
pvc jacket-OK
Tray Cable-Not OK
 
Smart $ said:
Tray Cable (Type TC) is not permitted to be installed outside of a raceway or cable tray system except in an industrial environment [336.12(2)]
Click to expand...

Yet it has a dircet burial rating on it, maybe for a direct buried cable tray? (I guess the industrial environment maybe could be direct buried - but am guessing in most cases they would use a raceway.
 
There is no reason to run TC. You can run any wiring method you want. Many manufacturers supply a cord for the unit but I usually run power to the disconnect outside and then run nm inside the walls to a JB outside then flex to the unit with Thwn or use UF all the way. You can use the TC cable in a raceway.
 
kwired said:
Yet it has a dircet burial rating on it, maybe for a direct buried cable tray? (I guess the industrial environment maybe could be direct buried - but am guessing in most cases they would use a raceway.
Click to expand...
I was just citing one "required" wiring method using TC. TC is not permitted to be direct buried unless it is marked [suitable for] direct burial. But the OP mentioned something about stapling to wall, which certainly isn't direct burial...!!!
 
From what the local HVAC folks tell me that's a "standard" cable the manufacturer supplies...
and I imagine in many areas it is installed without raceway, but as pointed out, doing so would be a Code violation.
My memory tells me all 4 condcutors are current carrying so I'm not sure you4 14/3 wg
UF would be a good substitute.
Locally most use the TC and install it in a raceway.

Another long fought argument here is the need for a disconnect at the inside fan motor.
 
i did one of those in mass and when i got there the ac guy had run the cord and left it
hanging out the wall tywrapped to the freon lines. i can tell you it was a pita to hookup
as the manufacturer only provides 2 1/2 ko's and there were two of those cables and my feed.
i went upstairs to see how he connected it...wish i didnt he had cut off on of the grounds out of
one cable guess he figured he had one in the other.....its a listed package so i wasnt arguing with
the cord issue and it passed insp....:
 
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