Rewiring to a garage

[buzzlightyear]

but want get to registered and head off on my own.

did you work with a firm.

 

[butchtaylor909]

not currently i was doing work with a NICEIC electrician that lived nearby until he gave up due to ill health last week.

currently sat at home twiddling thumbs and doing what ever jobs i can get

 

[Ian1981]

Agreed sy,yy and cy cables are not made to a British standard and you would have to depart from bs 7671 if using them for fixed wiring.
They are commonly used for control wiring and aircon.
The on site guide warns about using such cables.

 

[butchtaylor909]

Agreed sy,yy and cy cables are not made to a British standard and you would have to depart from bs 7671 if using them for fixed wiring.
They are commonly used for control wiring and aircon.
The on site guide warns about using such cables.

From memory they are made to a British standard, BS EN 50525 iirc.

 

[Ian1981]

From memory they are made to a British standard, BS EN 50525 iirc.

They claim to be that is all

 

[westward10]

Problem with SY is do you earth the braid and if you do what calculations are you going to employ to verify its capacity for carrying fault current because the chances of finding out its resistance are zero.

 

[DPG]

Braid can't carry fault current can it?

 

[buzzlightyear]

not currently i was doing work with a NICEIC electrician that lived nearby until he gave up due to ill health last week.

may be you should look for a firm, that will give you more experience
before you make a leap of faith by joining the niceic

 

[westward10]

Braid can't carry fault current can it?

This is the grey area, people say it should be earthed in case it becomes live opening up the problem can it carry fault current.

 

[Ian1981]

Problem with SY is do you earth the braid and if you do what calculations are you going to employ to verify its capacity for carrying fault current because the chances of finding out its resistance are zero.

Apparently the braid isn't to be used as a cpc anyway it's for screening only.
I even read an niceic article which dismisses the braid as even being an exposed conductive part as it cannot withstand fault currents.
Go figure

 

[westward10]

Well I don't believe it needs earthing but those who feel it should in case it becomes live need to calculate its capacity to carry fault current.

 

[DPG]

Definitely can't carry fault current but should always be earthed. Tin hat on and bonded.

 

[Ian1981]

Just don't use it and you have no problem

 

[DPG]

Agreed. The only reason I'd use it in my house is because I always like the look of it. Good reason really. Maybe the 18th should have a section on aesthetics.

 

[Wilko]

Definitely can't carry fault current but should always be earthed. Tin hat on and bonded.

I hope @butchtaylor909 and Everyone won't mind a distraction. I'm not in the best frame tonight so it's time for the bonded tin hat joke :

 

[westward10]

Definitely can't carry fault current but should always be earthed. Tin hat on and bonded.

Should always be earthed, can't carry fault current how does that work.

 

[DPG]

Should always be earthed, can't carry fault current how does that work.

Not everything that is earthed is designed to carry fault current.

 

[Dave OCD]

Agreed. The only reason I'd use it in my house is because I always like the look of it. Good reason really. Maybe the 18th should have a section on aesthetics.

That would be interesting, so much of what I see would fail then !