150C wire

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kbsparky

kbsparky

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Delmarva, USA
I recently took delivery of a bunch of outdoor wall paks that specify the use of wire rated 150C for electrical connections.

What is the best type of wire available for this purpose? :-?
 
Take a look at Art 402. Several fixture wires meet this rating. Note 402.11, however.
 
kbsparky said:
I recently took delivery of a bunch of outdoor wall paks that specify the use of wire rated 150C for electrical connections.

What is the best type of wire available for this purpose? :-?
Click to expand...

When I worked on food equipment (and after we ran out of asbestos coated) we went to nickle plated copper in a silicon mesh like sheathing. We bought it from a local distributor who's main business was thermalink brand heaters, but he also sold opencoil heaters (like in dryers). good source for s/s terminals too.

look for something similar near you.
 
I usually end up using TGGT. That's what I can get the quickest, and it's not really that expensive. Usually next day. I ran into some can lights that were marked for 150C wire too. Don't forget to use the high temp wire nuts in those wall packs too, or they'll turn to dust.
 
Marc, I can't find TGGT in table 402.3 in the Code. Is this an assembly or cable that contains other listed conductors?

Something readily available at Hagemeyer?

I had originally planned on using type MC cable to feed these wall paks from a j-box inside, but now it seems I will have to use something else. I'll have to use some 3/8 or 1/2 greenfield from those j-boxes into the back of the wall paks. What I install in that greenfield remains to be seen, depending on what is available and at what cost ... :rolleyes:

Now the next question here is can I use a smaller conductor than #12 to feed these fixtures? Since each wall pak is only 250 watts, the total load will only be a couple of amps. Isn't there something about tap conductors to fixtures that allows a lead smaller than the branch circuit conductor to be used (Table 402.5)?
 
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kbsparky said:
I recently took delivery of a bunch of outdoor wall paks that specify the use of wire rated 150C for electrical connections.

What is the best type of wire available for this purpose? :-?
Click to expand...


Out of curiosity what make/model are these wall packs? That is an awfully big "gotcha."
 
It's got some NEC cross labeling on it too. XFF, maybe? I get it from Hagemeyer. Next day from the Chambersburg or Baltimore DC.
 
mdshunk said:
.... XFF, maybe? I get it from Hagemeyer. Next day from the Chambersburg ....
Click to expand...

Is that a cable assembly, or individual conductors?

Yeah, copy that from Hagemeyer/Tristate. We get next day service here as well. I can order stuff by 4:30 PM and the driver is delivering the next morning in my driveway before 7 AM.

Now at least I'll know what to ask for.
 
Do they have a minimum size roll to purchase? I'm thinking I will need about 100 feet to complete this job. Looks like #18 would do the trick.

I'd hate to have to buy 500 feet for the want of only 100 .... :mad:
 
I ran into this issue while installing heat lamps in a kitchen. Surprisingly enough, the local hardware store sold #14 hi-temp wire in bulk. (This place is middle ground between Mom 'n Pop and Big Orange Retail Giant) Snaked it through greenfield and all was good.

The heat lamps also came with ceramic wire nuts. I've seen first hand what happens to standard marrettes when used in this application. It's... messy
 
Found the pictures of the can lights I ran across that needed 150C conductors:

150degreecan1.jpg
 
dont know if its an NEC type or just awm, but you can get high temp wire from stage lighting companies, its used as the fixture leads, and many places sell it by the foot. Silicone insulation with outer fiberglas braid.
 
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