352.48

Merry Christmas
Status
Not open for further replies.
chris kennedy

chris kennedy

Senior Member
Location
Miami Fla.
Occupation
60 yr old tool twisting electrician
352.48 Joints.
All joints between lengths of conduit, and between conduit and couplings, fittings, and boxes, shall be made by an approved method.
Click to expand...
Does this mean you have to use solvent cement?

This is pretty vague also.

NEMA said:
Most forms of PVC conduit, duct, and fittings are meant to be assembled or joined by means of solvent-cementing of the integral bells or PVC couplings. Solvent cements contain chemicals which dissolve the surface of the PVC, softening it. As the chemicals evaporate, they leave a PVC resin behind which fuses the mating surfaces.
Click to expand...
Many times when I have connector to connector nipples between cans I don't glue them. Am I in violation?
 
Is the nema statement no different, than another like application of flux and sodier. The flux is positively charged and the sodier is negative.
The flux pulls the sodier in and it is replaced. Or visa versa one positive charge and the other is negative.

Isn't it also the case with this PVC that the solvent might just be positive/negative releationship and set up and work the same ?
It just get to chemically fuss, OK Cool.. I don't know!

I've never use a solvent cleaner but isn't it part of 110.3 from the manufacture. There was a post about this + 6 months ago.

I've never used a cleaner but I do always use glue.:rolleyes:
 
I have seen small sections of PVC contract out of the adapters when not glued. I would suggest always applying cement at terminations.
 
cadpoint said:
I've never use a solvent cleaner but isn't it part of 110.3 from the manufacture.
Click to expand...
I'm talking about glue. I could find no place on Carlons site that said you have to use glue.
 
chris kennedy said:
I'm talking about glue. I could find no place on Carlons site that said you have to use glue.
Click to expand...

Chris all I have is UL White book (DZYR) RNC is designed for connection to couplings, fittings and boxes using a suitable solvent type cement.
 
dcspector said:
Chris all I have is UL White book (DZYR) RNC is designed for connection to couplings, fittings and boxes using a suitable solvent type cement.
Click to expand...

Thats good enough for me. Thank you Greg.
 
Thoughts on the same but different angles of an argument ? ?

NEMA is the a trade association. Should they assure or quailify one of a memebers brand name over another ?
Is the glue manufacturer in the club or not, gezz I don't know.

Is glue required, NEMA seems to say what they want, and tell you corectly how to apply it, is this just folklore, I think not.

Except our club / rules / get under our umbrella. Seems like anybody as a group could make a loud argement, get people to but their product, services, oh yeah we get a set of rules of how to apply our product by the way.

Seems like alot of business have made money selling under the rules of trade associations, or-like business associations.

The first major liabiality of a product or service loop hole will be, was the manufacturess instructions followed, seems like a big catch-all.

Interesting that the site doesn't say to apply anything!

I never read the directions building the toy models when young,
I sure do read everything now...
 
chris kennedy said:
Many times when I have connector to connector nipples between cans I don't glue them. Am I in violation?
Click to expand...

If they ever come apart in that application, you got bigger problems than missing glue.


I vote no violation.
 
frizbeedog said:
If they ever come apart in that application, you got bigger problems than missing glue.
Click to expand...


I read That from Chris earlier as well. I agree with you about the bigger problems except if in a wet location and the equipment remained intact, over a period of time, the possibility of moisture may exist.......Hey......just a thought..............
 
dcspector said:
I read That from Chris earlier as well. I agree with you about the bigger problems except if in a wet location and the equipment remained intact, over a period of time, the possibility of moisture may exist.......Hey......just a thought..............
Click to expand...

Good thought, but if moisture entering the equipment was an issue why not intall gaskets between the fitting and the cabinet as well as the glue.
 
frizbeedog said:
If they ever come apart in that application, you got bigger problems than missing glue.


I vote no violation.
Click to expand...
Look at the nipples between the CT can and disco. These are not glued. Will the conduit in them fall out?

I don't glue these because often the KO's are a thin hair off. This allows the TA's to be tweeked a bit for a better seat and full thread in locknut.

I now believe no glue is a violation, but I'm not going to start glueing them.

View attachment 1567
 
nice looking work, one question... I have never seen strut straps like the ones coming out of the top, is there a reason for the squared corners on them?
 
ultramegabob said:
I have never seen strut straps like the ones coming out of the top, is there a reason for the squared corners on them?
Click to expand...

No, thats what CED stocks. Made by Caddy. OK for PVC but a loose fit on EMT.
 
frizbeedog said:
Good thought, but if moisture entering the equipment was an issue why not intall gaskets between the fitting and the cabinet as well as the glue.
Click to expand...

I thought one must use sealing rings on the TA's in a wet location. If I have been enforcing this and it is not required.......my bad and appologize to all the EC's out there......
 
dcspector said:
I thought one must use sealing rings on the TA's in a wet location. If I have been enforcing this and it is not required.......my bad and appologize to all the EC's out there......
Click to expand...

Sealing rings or some type of WP connector is needed above the live parts.

See 312.2
 
iwire said:
Sealing rings or some type of WP connector is needed above the live parts.

See 312.2
Click to expand...
For enclosures in wet locations, raceways or cables entering above the level of uninsulated live parts shall use fittings listed for wet locations.
Click to expand...
The TA is not rated for wet locations? Thought we had this nailed down.
 
chris kennedy said:
The TA is not rated for wet locations? Thought we had this nailed down.
Click to expand...

It is rated for use in wet locations, so is a compression conduit connector, but it still needs a way to seal the entry into a cabinet.
 
iwire said:
Sealing rings or some type of WP connector is needed above the live parts.

See 312.2
Click to expand...

I don't have NEC here right now. Does Chris have a violation on the above picture if no gasket on the fittings between the cabinets? My Holt book says above the level of uninsulated live parts.

Edit. Sorry, to slow to post.
 
Last edited:
Status
Not open for further replies.
Top