electrical trunking, taping power from

[markjkubicki]

the architect has specified an electrical trunking system to which industrial wrap-around lighting fixtures are intermittently attached. The intention is for the trunk, in addition to running cable, within divided compartments, for other purposed, to provide power to the fixtures. The trunk has no factory knockouts.

The manufacturer is telling us that if we punch knock-outs in the trunk, to get power to the fixtures (using a chase nipple, bushing, et. al.), this will void the UL rating.

On one level, I get it: a punched knock-out modifies the enclosure...
On another level, we punch K.O.s in grey boxes... all the time !?)

No matter... I've got trunk, and I've got fixtures, and the fixtures mount to the trunk, and I need to get power to them... and I'm standing here scratching my head.

ANY THOUGHTS would be greatly appreciated in advance,
mark

 

[sameguy]

Lighting tap box from the manufacturer.? They didn't try to give you that info?

 

[markjkubicki]

not certain what you mean by lighting tap box...?
The runs are tandem mounted housings, nominally 10ft in length each, with no provisions for a knockout anywhere along their length.

 

[sameguy]

What brand?

 

[infinity]

What kind of trunking system?

 

[MAC702]

...The manufacturer is telling us that if we punch knock-outs in the trunk, to get power to the fixtures (using a chase nipple, bushing, et. al.), this will void the UL rating....

We can't be provided with the manufacturer name and model of the trunk?

 

[kwired]

I'm with others, what is this "trunk"? What NEC section applies to it? Sounds like maybe surface metal raceway or maybe wireways?

 

[markjkubicki]

Not ignoring everyone. Just that I’d already left for the holiday
...will definitely pickup (with the missing info) as soon as I return

HAPPY HOLIDAYS!!!
m.

 

[sameguy]

Trunk looks like Wiremold V6000 with barriers.