2.5mm flat cable with a sleeved CPC

[John-SJW]

I recall seeing this a long time ago. Is it still available? Anyone know.

 

[Dustydazzler]

Only ever seen it used in Ireland , Australia and NZ

 

[ipf]

Twin and earth cable, 6242Y, with smaller cpc, has never been produced as such.
6193Y with 3 cores of the same size and insulated earth is available and meets the ROI requirements, I believe.

 

[Dustydazzler]

on a side note , I think it’s nuts that we the u.k haven’t adopted twin @ earth with a sheeved cpc Yet.
no more Faffing about with little pieces of earth sleeve

 

[telectrix]

on a side note , I think it’s nuts that we the u.k haven’t adopted twin @ earth with a sheeved cpc Yet.
no more Faffing about with little pieces of earth sleeve

steady on. it's only 50 years since we went metric. ( a backward step, IMO, I'm still 5'8"and 12st. 10lb. ).

 

[John-SJW]

The Irish cable is superior for sure. All conductors being insulated with the CPC the same size as the L & N. Does the cable conform to the UK requirements?

As a kid I recall an old electrician say, "the largest sized conductor on a circuit must the earth cable". How matters have changed.

 

[John-SJW]

on a side note , I think it’s nuts that we the u.k haven’t adopted twin @ earth with a sheeved cpc Yet.
no more Faffing about with little pieces of earth sleeve

The UK earth sheathing looks so amateurish and cheap.

 

[John-SJW]

steady on. it's only 50 years since we went metric. ( a backward step, IMO, I'm still 5'8"and 12st. 10lb. ).

The metric system is superb. I am 183 cm high and 76 kg.

 

[Dustydazzler]

The Irish cable is superior for sure. All conductors being insulated with the CPC the same size as the L & N. Does the cable conform to the UK requirements?

As a kid I recall an old electrician say, "the largest sized conductor on a circuit must the earth cable". How matters have changed.

I wouldnt say the earth should be the ‘largest’ but imo it should be equal size to phase

 

[Intoelectrics]

on a side note , I think it’s nuts that we the u.k haven’t adopted twin @ earth with a sheeved cpc Yet.
no more Faffing about with little pieces of earth sleeve

I've always wondered this myself. I gues its just easier & cheaper for the manufacturers to omit it, if its unrequired.

 

[John-SJW]

I wouldnt say the earth should be the ‘largest’ but imo it should be equal size to phase

He was implying the earth must not be smaller than any other. It can be larger, but never smaller.

 

[Dustydazzler]

He was implying the earth must not be smaller than any other. It can be larger, but smaller.

That I agree with

 

[Intoelectrics]

I wouldnt say the earth should be the ‘largest’ but imo it should be equal size to phase

Cable manufacturers would disagree, that means more copper! ?

 

[John-SJW]

I've always wondered this myself. I gues its just easier & cheaper for the manufacturers to omit it, if its unrequired.

Everything in the UK is done on the cheap. Final Ring circuits, omitting insulation from a cable, poky cheap and nasty consumer units, etc.

 

[John-SJW]

Is flat all insulated conductor cable available in the UK?

 

[pc1966]

Having full-size CPC is basically wasted copper. The CPC exists to clear a fault, and if the circuit is designed to meet the required disconnection time / let-through energy then larger is simply not needed.

For some things, like long extension leads, that disconnection characteristic might not always be met, and for other practical manufacturing reasons reasons you might choose to make them all the same size.

 

[John-SJW]

I think you mean sized large enough to activate a disconnecting device.
Electricty always wants to return back to where it orginated - the generator, transformer, battery, etc. The earth wire was to parallel the Neutral return to the generator or origin - either full, all geh way back, or party by connecti g to the N at some point on its way back. So that if there is a fault, it gets back to where it came from. So it needed to be the same size as L and N. Seems modern disconnecting safety devices have changed the view.

 

[Sparky Pat]

Before the days of green / yellow I do recall having some 1.0mm single and earth where the earth wire was sheathed green.

 

[telectrix]

The metric system is crap. I am 183 cm high and 76 kg.

impossible for me to visualise those measurements.

e.g. a gallon of water weights 10lb. sssimpless. but 4.54l weighs 4.54 kellogs, stupid.

 

[John-SJW]

impossible for me to visualise those measurements.

After all this time? Metric is easy. You just gave a simple easy e.g., as well. Very easy. Learn it, it is simple and quick. Everything matches.

 

[telectrix]

Everything matches.

as did the Titanic's watertight doors.

 

[westward10]

I remember back in the late 80s probably where we used some 1.5 and 2.5 with an insulated cpc. No idea of the manufacturer and I had kept some but no idea where it is now.

 

[brianmoooore]

I only know my exact height in feet and inches. I have an idea what it is in metric units, based largely on comparison with fluorescent tubes.
I know my exact weight in Kg only. I have no idea what it is in various weird imperial units.

 

[Intoelectrics]

I use metric for precision and imperial for rough measuring. e.g. a 2400 x 1200 sheet board I call an 8" x 4"

A little trick I use so I don't cut some thing short is to measure it in metric millimetres for precision and then I use the imperial inches as a reference point. For example if I want to cut something 1110mm, so I don't mistake it for 1010mm I'll round up to the nearest inch as a ref point = 44"

 

[John-SJW]

Dave Savery covers it here, about half way through. The Irish went over to insulated CPC with it having to be the same size as the L & N. I believe the Australians do the same but use stranded cable. That must really push up the costs.