new "earthsure" cable

[JohnW2]

I was responding to JBR.

I realised that, and both JBR and I had asked (me first ) what the perceived advantages were (having acknowledged the small advantages in terms of 'convenience'when terminating).

However, you have not answered my question as to whether you regard those (small) advantages of convenience as enough to cancel the (again, small) 'safety' advantages of having a bare CPC?

 

[securespark]

Which one is smaller?

 

[JohnW2]

Which one is smaller?

It's not just a matter of the relative magnitudes of the two 'advantages'.

I would suggest that, if the magnitudes were similar, or even if the 'convenience' advantage were appreciably greater, an advantage in relation to safety would (should) trump one related to 'convenience', wouldn't it?

 

[Ivor Windybottom]

The Doncaster cables rep in the vid uses some guarded language in describing it. I wonder if they've shrunk the CPC to make space and/or the sleeving isn't sufficient alone so it still requires sleeving. It looks very thin, is it really sufficient to protect it if it ends up pressed against a live screw terminal?

They should have just upsized the whole thing, i.e. so that new 1.5 cable requires 2.5 sized clips.

 

[JohnW2]

The Doncaster cables rep in the vid uses some guarded language in describing it. I wonder if they've shrunk the CPC to make space and/or the sleeving isn't sufficient alone so it still requires sleeving. It looks very thin, is it really sufficient to protect it if it ends up pressed against a live screw terminal?

Thee CSA of (the copper of) the CPC obviously 'has to be what it has to be' (i.e. the same as it currently is with bare CPCs.

The insulation they have added to thee CPC is certainly very thin compared with that of the live conductors but, given that no insulation at all is actually 'required' (in UK), that doesn't really matter.

As I've said, I'm struggling to understand the perceived advantage, beyond a slight increase in 'convenience when terminating the cable - so it's hard for me to decide what would/should be deemed 'adequate' in terms of the insulation of the CPC.

Kind Regards, John

 

[SUNRAY]

Thee CSA of (the copper of) the CPC obviously 'has to be what it has to be' (i.e. the same as it currently is with bare CPCs.

The insulation they have added to thee CPC is certainly very thin compared with that of the live conductors but, given that no insulation at all is actually 'required' (in UK), that doesn't really matter.

As I've said, I'm struggling to understand the perceived advantage, beyond a slight increase in 'convenience when terminating the cable - so it's hard for me to decide what would/should be deemed 'adequate' in terms of the insulation of the CPC.

Kind Regards, John

Bear in mind I don't install T&E all day every day like some on here - in fact the last Drum of similar cable I aquired was 2.5mm² T&E about 2018 or so and 1.5mm² 3C&E about 2011.

My opinion for what it's worth, is the only advantage I can see is just as mentioned in the video; the sleeving doesn't fall off. BUT I hold a selection of sizes (unlike many it seems) and don't use sleeving fit for large wires on small wires or experience the issue in the same way that some do.

Equally it would never occur to me to leave bare copper exposed when fitting sleeving.

 

[JohnW2]

My opinion for what it's worth, is the only advantage I can see is just as mentioned in the video; the sleeving doesn't fall off.

.... that really comes within my concept of 'just convenience' - since if done with a little care, using the correct size of sleeving, it won't fall off (and cannot fall off once the conductor is terminated - so those who experience 'falling off' problems presumably must fail to look at what they've done before they render it 'unseeable' !!).

In fact, if I have some to hand, I tend to use (shrunk) heatshrink for CPCs, and that won't 'fall off'.

Kind Regards, John

 

[Notch7]

don't use sleeving fit for large wires on small wires

Places like screwfix tend to sell rather big Earth sleeve which is annoying, it looks cr@p on small cables

 

[Notch7]

Do electricians not pull the the CPC with pliers to strip the outer cover?

Maybe pro guys have a fancy twin and Earth stripper for the job

 

[sparkwright]

Do electricians not pull the the CPC with pliers to strip the outer cover?

Maybe pro guys have a fancy twin and Earth stripper for the job

Apparently, you can still pull the earth wire to strip the outer sheathing, providing you don't put the earth wire 'back on itself'.

If you do that, you can damage the earth insulation.

Very occasionally, I end up with a badly manufactured roll of T+E, where the insulation is stuck to the sheath, and you can't successfully separate the two.

That could be a problem with Earthsure - but that's a minor, minor one.

 

[opps]

Places like screwfix tend to sell rather big Earth sleeve which is annoying, it looks cr@p on small cables

I recently had to purchase some uninsulated spade terminals from Cablecraft

Uninsulated Push-On Terminals 6.3 x 0.8mm - CPO1-6.3

Uninsulated Push-On Terminals 6.3 x 0.8mm

www.cablecraft.co.uk

Because of the min spend for free delivery, I added various items, including a 50m roll of 5mm earth sleeve. It is freakishly large. I must have been drunk when I purchased it