Fixture supported by conduit

[augie47]

I have not found a clear-cut answer to a question posed by an electrician today.......

Can a LED strip fixture be supported from a run of conduit in trusses ?? ("minneralac" strap on conduit with jack chain attacked)

300.11 amd 410.36(E) lead me to think it is permissible. Comments ??

 

[hbiss]

Not following you. Is the conduit slid through the trusses with jack chain hanging of it to support the fixtures or something else?

-Hal

 

[augie47]

conduit runs are in the web of trusses for the most part, a few are on bottom side secured to the trusses with Caddys.
Location of LEDs hanging by jack chain is such that most would be supported by clamps to a conduit (fixtures don't line up under joists)

 

[LarryFine]

Methinks you can use sections of conduit for support, but not runs of conduit that contain wires.

 

[hbiss]

I understand now.

410.36(E) talks about raceway fittings needing to be capable of supporting the weight of the fixture. So that would mean to me that they are talking about pendent fixtures hung by a raceway from a box used to power it.

300.11(C) would seem to prohibit it.

Looks like Kindorf or EMT slid through the trusses would be the way to go.

-Hal

 

[LarryFine]

Shallow Uni-strut is common - or is that what Kindorf is?

 

[Little Bill]

Shallow Uni-strut is common - or is that what Kindorf is?

I think they call it that in some areas. I believe I first heard the term here.

 

[infinity]

Methinks you can use sections of conduit for support, but not runs of conduit that contain wires.

That's correct, you could lay a piece of EMT across the trusses and use it to support a fixture it just cannot be supported from a raceway.

 

[augie47]

That's correct, you could lay a piece of EMT across the trusses and use it to support a fixture it just cannot be supported from a raceway.

That would be my thought but, as u guys often say: " have the inspector give you a Code reference "

 

[infinity]

That would be my thought but, as u guys often say: " have the inspector give you a Code reference "

I would start with the sections you've mentioned. A fixture can be hung from just about anything as long as the AHJ approves it. I've seen guys use strut, EMT, RMC, wood, angle iron, you name it.

 

[roger]

There is also 358.12(5), this would be a raceway of EMT, not EMT used soley to support something.

Roger

 

[augie47]

There is also 358.12(5), this would be a raceway of EMT, not EMT used soley to support something.

Roger

:thumbsup: (I forgot to look in the obvious location) Thank You

 

[roger]

You're welcome.

Roger

 

[oldsparky52]

There is also 358.12(5), this would be a raceway of EMT, not EMT used soley to support something.

Roger

The installer is going to wish he had read that before the installation.

 

[hbiss]

Shallow Uni-strut is common - or is that what Kindorf is?

Kindorf is what T&B calls their strut system. At one time their clamps and channel were not directly compatible with everybody else's strut products like Uni-strut. They have since redesigned their channel and clamps so they are interchangeable with other manufacturers.

-Hal

 

[sameguy]

Kindorf is what T&B calls their strut system. At one time their clamps and channel were not directly compatible with everybody else's strut products like Uni-strut. They have since redesigned their channel and clamps so they are interchangeable with other manufacturers.

-Hal

Don't forget B-Line

 

[jap]

Kindorf is what T&B calls their strut system. At one time their clamps and channel were not directly compatible with everybody else's strut products like Uni-strut. They have since redesigned their channel and clamps so they are interchangeable with other manufacturers.

-Hal

Irrelevant to this discussion.


JAP>

 

[hbiss]

Just thought you would like to know.

-Hal

 

[jap]

Just thought you would like to know.

-Hal

That's just a catch phrase someone threw at me one time on this forum so I just try and throw it back every chance I get.


JAP>

 

[sameguy]

straw man!