Electrical whip cement?

[vavet]

https://www.homedepot.com/p/Southwi...lic-PVC-Conduit-Cable-Whip-55189407/202210500

I’m using one of these electrical whips to connect power to the outdoor unit of my new mini split. It connects the disconnect on the outside of the garage to the outdoor unit.
It comes with two connectors to go into a knockout, but that doesn’t secure it to the pvc sheath of the cable.
Can I use electrical pvc cement to secure the sheath to the fittings? Is there some other way?

 

[Jim greengo]

The end screws into the seal tight.

 

[PDB]

The ones I have used you shove the conduit into the fitting and hand tighten the nut which compresses the conduit holding it securely in place.

 

[wyliesdiesels]

Do NOT put pvc glue on the conductors. Its a solvent and will ruin them.

 

[kaffine]

You don't need to secure the wires inside the conduit if going from box to box.

 

[rlitman]

...It comes with two connectors to go into a knockout, but that doesn’t secure it to the pvc sheath of the cable...

Are you talking about that grey sealtite sheath? The connectors are compression fittings if that's a non-metallic whip. Metallic whips are also, but also have a metal bushing that screws in.

 

[Jim greengo]

Are you talking about that grey sealtite sheath? The connectors are compression fittings if that's a non-metallic whip. Metallic whips are also, but also have a metal bushing that screws in.

On the whip in the picture the ends just thread into the seal tite,usually it's just 1 end that's loose so you can shorten the whip.

 

[rlitman]

On the whip in the picture the ends just thread into the seal tite,usually it's just 1 end that's loose so you can shorten the whip.

Right, and the big plastic nut on top compresses the collet.

 

[Jim greengo]

Right, and the big plastic nut on top compresses the collet.

No,that end is 1 piece I'm pretty sure.
I've got some like it in my van,you just cut it down to length you want and screw the end into the seal tite.

 

[Jim greengo]

Heres a picture of one like I'm talking about,the end just screws into the seal tite.

 

[Jim greengo]

Even the supply houses are selling over simplified stuff these days.

 

[Jim greengo]

And of course these are the ends most of us old guys are used to,I keep them on the van for repairs and custom made whips when needed.
I was a surprised a few years back when the whips I bought at johnstone and baker and everyplace else started coming with those screw in plastic ends,but I guess I've gotten used to them.

 

[rlitman]

No,that end is 1 piece I'm pretty sure.

I've got some like it in my van,you just cut it down to length you want and screw the end into the seal tite.

I’ve seen the style in your picture, and really don’t care for how loosely it holds. That type just screws into the core like the metal inside piece with a sealing cap at the ends.

But all the ones with ribs or a hex on the outside that I’ve seen are the stronger style that has a nut.

 

[Jim greengo]

I’ve seen the style in your picture, and really don’t care for how loosely it holds. That type just screws into the core like the metal inside piece with a sealing cap at the ends.

But all the ones with ribs or a hex on the outside that I’ve seen are the stronger style that has a nut.

Yes,I agree completely.

 

[rlitman]

Yes,I agree completely.

FWIW, I’ve never used any of these whips, because I’ve always made my own. If you need more than 2, it’s cheaper to buy the roll of LFNC. And you can also save by not using these fittings. LFNC can actually be cemented into PVC conduit fittings, though the metallic type which I prefer cannot.

 

[alfredeneuman]

LFNC can actually be cemented into PVC conduit fittings,

What type of glue works?
I've tried priming, sanding the ends, and 3 types of glue (Grey electrical, clear electrical, and Christy's red hot blue) in every conceivable combination of them and they didn't stick.
(I've heard that Spa Glue for the flexible hoses on spas work, but never tested it myself)

 

[brewchief]

FWIW, I’ve never used any of these whips, because I’ve always made my own. If you need more than 2, it’s cheaper to buy the roll of LFNC. And you can also save by not using these fittings. LFNC can actually be cemented into PVC conduit fittings, though the metallic type which I prefer cannot.

It depends on where you are buying the whips, I can buy them through a wholesaler cheaper then I can buy just the fitting ends from the electrical supply house.

I do keep a roll of LFNC and fittings on my truck to build longer whips if needed but it's cheaper and faster to use the premade ones if they will work.

FWIW I have never had one of the twist in ends pull apart but I have seen the compression style come apart. I have tried to remove the straight end from one of those whips that's already on from the factory and the LFNC will rip apart before it comes apart.

Sent from my SM-G965U using Tapatalk

 

[rlitman]

What type of glue works?
I've tried priming, sanding the ends, and 3 types of glue (Grey electrical, clear electrical, and Christy's red hot blue) in every conceivable combination of them and they didn't stick.
(I've heard that Spa Glue for the flexible hoses on spas work, but never tested it myself)

LFNC is just a grey version of the spa hose. That stuff glues with regular PVC cement, but is more reliable with a special cement for it. From what I've found with all PVC cementing, and with flex in particular, priming is critical. I use the clear, because my work isn't inspected by someone looking for purple, but either should be fine. Just go over it a bunch of times with the cotton ball until it looks hazy, and then give it a few minutes for the primer to flash off before cementing.

It depends on where you are buying the whips, I can buy them through a wholesaler cheaper then I can buy just the fitting ends from the electrical supply house.

I do keep a roll of LFNC and fittings on my truck to build longer whips if needed but it's cheaper and faster to use the premade ones if they will work.

FWIW I have never had one of the twist in ends pull apart but I have seen the compression style come apart. I have tried to remove the straight end from one of those whips that's already on from the factory and the LFNC will rip apart before it comes apart.

Wholesaler makes sense. Yes, the fittings are crazy expensive. Yes, the compression non-metallic fittings aren't all that secure, and yes, this stuff can be snapped. I pretty much always scoff at the price of the metallic, but then take it off the shelf anyway when I think about those last two reasons.