Quick switch (door sensor) with exposed wire up to trunk line

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Location
Spokane, Wa. USA
Occupation
Low voltage technician
We use a 25 pair as a trunk line that runs through the purlin of the building the whole length. The door sensors screw onto the rail of each of the roll-up unit doors,(4' from floor) the switch has a 22/2 lead that extends up to the 25 pair in the purlin and connects.

We secure the 22/2 lead with holy ties all the way up and make sure it is routed in a way that protects it from physical damage.

I've recently been told that any wire below 8' needs to be in conduit, but I have yet to find any code (art. 800) that states this.

I assume the code is for any voltage carrying wire and not for a simple dry contact wire.

Any input is appreciated so I can prove my boss wrong!!:lol:
 

hbiss

EC, Westchester, New York NEC: 2014
Location
Hawthorne, New York NEC: 2014
Occupation
EC
Holy ties? Aren't those only for use in churches? :lol:

As to your question, the Code doesn't address this issue, it's a design decision. If it were me (and I have done exactly what you are talking about) I would sleeve it down from the top in 1/2" EMT to protect it from damage. So while your boss may be wrong about it being a Code issue, he is certainly correct from a workmanship standpoint.

-Hal
 

GrayHair

Senior Member
Location
Nashville, TN
Sounds like you're working with an alarm system, which usually falls under Article 725, and there are no such requirements there. We used contacts with armored cable into a handi-box and then conduit; just to protect the cable. It's amazing the stuff they'll hang on your cable.
 
Location
Spokane, Wa. USA
Occupation
Low voltage technician
Armored lead quick switches

Armored lead quick switches

I search online with little to no luck,

I'm wondering if anyone know of a distributor the has this style of quick switch with a armored lead.

quick switch.jpg
 
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