Recessed Lights J Boxes

[kgettrost]

Would a J-box that is part of a recessed light for installation in a SFH need protection on the end factory knockout? In Article 314 [Construction Specifications] 314.40 Metal Boxes,Conduit Bodies, & Fittings. Section 314.42 Bushings.Openings shall be provided with approved bushings or shall have smooth, well-rounded surfaces on which the cord may bear. Also in the box is a cable-grip is this enough to secure cable to the box? This is not a clamp but only a piece of spring steel. Per the juno recessed light IC & TC. The contractor thinks because of this listing no protection is needed for the knockouts, or nothing else is need to secure the cable.

 

[raider1]

314.42 applys to covers of outlet boxes throught which flexible cord pendants may pass. This section would not apply to a J-box attached to a listed recessed can.

Chris

 

[electricmanscott]

Why do feel like we've been here before?


As stated the article numbers quoted do not apply.


Why don't you trust your contractor?

 

[buckle40]

I would agree that this would be true if you were trying to use article 314 for pendent. However, if you go to article 300 section 300.4 B 1 it is required.

 

[raider1]

I would agree that this would be true if you were trying to use article 314 for pendent. However, if you go to article 300 section 300.4 B 1 it is required.

300.4(B)(1) deals with NM cable running through metal framing members (metal studs). This section does not address NM cable entering an electrical box.

Chris

 

[buckle40]

And what about 314.17 B

 

[raider1]

And what about 314.17 B

314.17(B) applys to messenger supported wiring, open wiring on insulators, or concealed knob and tube wiring, not to NM cable.

The factory supplied cable clamp and opening in a Juno can IMHO is fine without additional protection. I don't see these opening any different than the factory openings with cable clamps in 4sq or 4/0 boxes that are designed for NM cable.

Chris

 

[LJSMITH1]

When in doubt, consult the Manufacturer's installation instructions. If it is a standard j/b design with a std. knockout, more than likely you would need an applicable connector to secure the cable to the box (NM or AC/MC). The only time that this would not apply, if if the j/b has a built in cable/conduit clamp that requires no fitting. However, the clamp will typically be stamped for use with either MC/AC or NM.

 

[celtic]

314.17(B) applys to messenger supported wiring, open wiring on insulators, or concealed knob and tube wiring, not to NM cable.

The last line of 314.17(B) would seem to be written that it DOES apply to NM:

Where raceway or cable is installed
with metal boxes or conduit bodies, the raceway or
cable shall be secured to such boxes and conduit bodies

410.56(A) & (B) seems address this "issue" as well.

EDIT:

The factory supplied cable clamp and opening in a Juno can IMHO is fine without additional protection. I don't see these opening any different than the factory openings with cable clamps in 4sq or 4/0 boxes that are designed for NM cable.

I agree

 

[raider1]

The last line of 314.17(B) would seem to be written that it DOES apply to NM:

Yes, it could be read to apply to NM cable.

410.56(A) & (B) seems address this "issue" as well.

Yes it does. But IMHO the factory supplied connectors in the Juno cans meet these requirments.

Chris

 

[buckle40]

The listing has to do with the assembly not with the cables entering the j box

 

[celtic]

The factory supplied cable clamp and opening in a Juno can IMHO is fine without additional protection.

EDIT:


I agree

But IMHO the factory supplied connectors in the Juno cans meet these requirments.

I still agree :smile:

 

[buckle40]

If this so why does the manufacture tell you to check with local building department concerning the contains in the j-box.

 

[buckle40]

If this so why does the manufacture tell you to check with local building department concerning the contains at the j-box. Moreover, the contactor but the cables thru a knock only with no connector. And that this was ok per the listing.:-?

 

[LJSMITH1]

What is the Mfr and model Number of the can?

 

[celtic]

If this so why does the manufacture tell you to check with local building department concerning the contains at the j-box.

For the same reason cigarettes have a warning label on them ~ liability.
The manufac. has no idea what code cycle a given area is under, the "Get out of jail free card" is to have the installer check with the local AHJ.

Moreover, the contactor but the cables thru a knock only with no connector. And that this was ok per the listing.:-?

I don't understand what you have written :-?

 

[LJSMITH1]

Juno Type IC and Type TC housings state the following in the installation instructions:

Step 2. Remove wiring box cover. Remove
the appropriate knock-out(s)
to accommodate the type of electrical service
to be used/allowed by your local electrical
code (Fig. 9):

Metal Conduit. Remove appropriate round
knock-out(s) and connect conduit to wiring
box with proper connectors (not supplied.)

Non-Metallic Cable. Remove appropriate
knock-out(s) from top of wiring box and
insert cable, pushing it past the cable grip.
No other connector is required.

 

[electricmanscott]

This is just incredibly sad.

 

[celtic]

Juno Type IC and Type TC housings state the following in the installation instructions:

Halo has the same:

Step 2
Remove the wiring box cover.
Remove the appropriate knock-out(s) to accommodate the type of electrical service to be used.
Note: The wiring box will accept metal conduit or non-metallic cable, but metal conduit must be used if your electrical code requires it.
Metal Conduit: Remove appropriate round knock-out(s) and connect conduit to wiring box with proper connector(s) (not included).
Non-metallic Cable: Remove appropriate rectangular knockout( s) on top of wiring box and insert cable, pushing it past the cable lock in wiring box. Cable will be held in place by the lock; no other connector is required (Fig 4).

[NOTE: Fig. 4 is basically the photos I show above]

H99ICT

If one chooses to use the standard 1/2" KOs ~ a proper connector MUST be used ~ you cannot just slip the NM through the 1/2" KO.

 

[buckle40]

This is just incredibly sad.

What do you mean by this? I thought this was forum to learn by asking question and getting your years of experience