What do you call the slotted part that keeps cables from breaking?

[Nanako]

The part that his index finger is touching here, the sort of cone shaped bit of plastic with slots cut into it

In my experience, cables with this kind of thing attached fray far less often, and i have a few tools which are lacking these and suffering from that problem

What is this device called? Can i buy and retrofit them onto existing cables?

 

[Fred Blogs]

They are called strain relief sleeves although that one is part of a moulded plug and is not replaceable.

 

[Nanako]

thank you, that is helpful!

 

[Nanako]

oh a related question, how would i actually attach these things?

Presumably the thick end has to be affixed to the plug/device somehow, is that just a matter of using glue? or some kind of special solvent? or would they just stay in place naturally with friction?

 

[Koolpc]

oh a related question, how would i actually attach these things?

Presumably the thick end has to be affixed to the plug/device somehow, is that just a matter of using glue? or some kind of special solvent? or would they just stay in place naturally with friction?

You cut off the plug, rewire. Forget about the Flexi bit.

 

[SFK]

As per Koolpc, cut the broken plug off the wire and use a new plug (take fuse from old plug and put it into the new plug so correct fuse value is used).

These plugs have a small strain relief.

https://www.amazon.co.uk/dp/B0DYDZ4DGF

But in my opinion they look low quality and but I normally (and happily) use a normal plug from a quality supplier, for example:

https://www.screwfix.com/c/electrical-lighting/electric-plugs/cat8800007

or

https://www.amazon.co.uk/Masterplug-HDPT13B-MP-Heavy-Rewireable-Black/dp/B07B9YZHYL

etc


And a youtube video on how to wire a plug:

SFK

 

[SFK]

And if you really want a cord/cable stain relief, put one of these on your cable before you put on your new plug.
Attaching it with a blob of glue on the cable.
Never done this or used these, and as said I would not bother as cables should not fray at the plug.

Amazon.co.uk : Strain Relief Cord Boots

 

[endecotp]

In my experience, cables with this kind of thing attached fray far less often, and i have a few tools which are lacking these and suffering from that problem

Cables should not fray. Post a photo. How are you abusing them?

 

[endecotp]

View attachment 411283

Is it just me, or is that plug missing its earth pin?

 

[opps]

Cables should not fray. Post a photo. How are you abusing them?

One of my 25m extension leads has a rigid "strain" relief. Every few months I would have to cut the cable back because of non visible breaks in either the live or neutral.

On site one day, I cut away the supposed strain relief. It has been fine since then.

 

[opps]

The part that his index finger is touching here, the sort of cone shaped bit of plastic with slots cut into it

In my experience, cables with this kind of thing attached fray far less often, and i have a few tools which are lacking these and suffering from that problem

What is this device called? Can i buy and retrofit them onto existing cables?
View attachment 411283

In my experience, internal breaks are more likely to occur where the cable enters the tool rather than at the plug end.

 

[Nanako]

Cables should not fray. Post a photo. How are you abusing them?

fray is probably the wrong word, i dont know the right term for it. The outer sleeve wearing away is the main issue

and as Opps says in the post above, the problem is more often happening where it enters the tool, than at the plug. Though it does happen at plug end too and i feel like a lot of devices would benefit from one at each end of the cable

These rigid cable sleeves that are just a thick piece of plastic, cables tend to wear right at the end, it creates an obvious weak point.
I would like to install one of those slotted relief things on my belt sander, pictured here

My hammer drill has the same issue too

 

[Nanako]

Is it just me, or is that plug missing its earth pin?

just to clarify, that pic isnt mine, its just a random screenshot i took of a video where i saw the thing i wanted

but yes it is, thats a moulded plug with a plastic earth pin, does nothing but open the socket hatches. I've just finished replacing one exactly like it

 

[Echo the husky]

They are apparently available rewirable with a strain relief, but I'm not sure where you can actually buy them. I used to work repairing appliances and items with strain relief boots the flex often used to break internally or the sheath split at the end of the boot rather than at the plug so wasn't a huge improvement.

 

[Nanako]

They are apparently available rewirable with a strain relief, but I'm not sure where you can actually buy them. I used to work repairing appliances and items with strain relief boots the flex often used to break internally or the sheath split at the end of the boot rather than at the plug so wasn't a huge improvement.

Ah, "strain relief boot" seems to be what the one without slots in it is called

Yes those are godawful and everything that uses them breaks right at the end, its utterly terrible. I want to get rid of that thing and replace it with something that will ACTUALLY spread strain out

slotted ones at least are definitely better, it looks like there are spiral designs too that look even better still.
Is there a Best design for this kind of thing?