9.5 kw shower on 6mm ?

[platty1005]

that's fine, platty, until the insulation muppets arrive and reduce your ccc to 27A.

First post says NO INSULATION so i was just answering the original question and stated that 6mm is ok for REf C

If REF method 101 then 16mm cable is just big enough but i would not like to wrestle it into a pull switch !!

 

[telectrix]

i totally agree with you. we design a circuit to comply under existing conditions. if these itchysnot installers don't know any better than to smother cables, then they should get fresh employment selling the big issue.

 

[sedgy34]

i totally agree with you. we design a circuit to comply under existing conditions. if these itchysnot installers don't know any better than to smother cables, then they should get fresh employment selling the big issue.

Tel, the insulation installers is monkey see monkey do they don't know about all the Calcs to do with cables etc they just fill the area with the stuff off the van and move on to the next job.
its us poor guys who have to think of all that derating factors etc

 

[Geordie Spark]

in his towel

Why would he have an MCB in a towel ?

 

[sedgy34]

Why would he have an MCB in a towel ?

you have some posts to catchup on fella

 

[Litttle Shonet]

Just or all the posts about insulation (itchy Snot, I think some of you call them). You can't future proof for every eventuallity. If you did, then you may as well put cabling in from the roof just in case customer wants PV later on.

 

[Guitarist]

Just or all the posts about insulation (itchy Snot, I think some of you call them). You can't future proof for every eventuallity. If you did, then you may as well put cabling in from the roof just in case customer wants PV later on.

Totally agree mate. If the loft has only 4" of insulation tho, it is very likely that at some point in the foreseeable future there will be some addition. I always take my oval conduit 6 inches above existing insulation for just such an eventuality

 

[Geordie Spark]

Totally agree mate. If the loft has only 4" of insulation tho, it is very likely that at some point in the foreseeable future there will be some addition. I always take my oval conduit 6 inches above existing insulation for just such an eventuality

Good thinkin' bonny lad .. are ye a Geordie by any chance?? ....... If yer not, divven't worry ... aahl make ye an honourary one for noo.

 

[stevothespark]

Havnt bothered to read the other pages so this may have been said. 6mm will do for a while, id never put a 6mm cable in for anythin over 8.5kw shower, simply because ive been to far too many homes where a 9.5kw has been on an 6mm and the cable is burnt out/switch etc. Over a period of time, the 6mm will begin to melt, usually from the women who spend an eternity in the shower ! 10mm everytime for showers over 8.5kw every time.

 

[Moses]

Tel, the insulation installers is monkey see monkey do they don't know about all the Calcs to do with cables etc they just fill the area with the stuff off the van and move on to the next job.
its us poor guys who have to think of all that derating factors etc

I think that we must recommend that all new circuits installed in lofts that have no loft insulation, should be installed, at least 300mm above the plasterboard, on the loft wall or along appropriate battens installed for the purpose.

This would circumvent the "monkeys".