Hello Good Folks!
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I am a humble domestic spark that is not the most experienced (although not a Electrical Trainee!). I tend to do board changes and smaller stuff. An existing customer has asked me to rewire a couple of flats, one of the flats already has a new sub main ran in by the builder. The cable looks to be YY type, NOT armoured, is defo 16mm 3 core, but looks to have no mechanical protection and is prob <50mm from wall surface. The runs are around 8m for each flat.
YY cable is listed as a control cable rather than a power cable, so if this cable is indeed YY then is it suited as a sub main cable?* There is writing on the cable but I could not get through to investigate due to room full of carp. I will do so in due course.
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16mm YY cable is good for a max of 82A (these are one bed flats with kitchen/lounge as one room (so demand won’t be heavy)). DNO should be happy with 16mm I would assume if 60A supply requested. There is a separate 16mm earth also ran in.
So my question is *would a 100mA RCD up front provide sufficient protection or should the YY be replaced with SWA. No intake is present as of yet as being installed soonish I believe.
For the other flat I was going to run in 16mm 3 core SWA with a KMF up front. I am going to ring NAPIT technical on Monday but I know for sure they will probably say don’t put a 100mA up front despite the fact that there will be two 30mA at board.
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Thoughts welcome please (even OJL!!)
Thanking You!
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I am a humble domestic spark that is not the most experienced (although not a Electrical Trainee!). I tend to do board changes and smaller stuff. An existing customer has asked me to rewire a couple of flats, one of the flats already has a new sub main ran in by the builder. The cable looks to be YY type, NOT armoured, is defo 16mm 3 core, but looks to have no mechanical protection and is prob <50mm from wall surface. The runs are around 8m for each flat.
YY cable is listed as a control cable rather than a power cable, so if this cable is indeed YY then is it suited as a sub main cable?* There is writing on the cable but I could not get through to investigate due to room full of carp. I will do so in due course.
*
16mm YY cable is good for a max of 82A (these are one bed flats with kitchen/lounge as one room (so demand won’t be heavy)). DNO should be happy with 16mm I would assume if 60A supply requested. There is a separate 16mm earth also ran in.
So my question is *would a 100mA RCD up front provide sufficient protection or should the YY be replaced with SWA. No intake is present as of yet as being installed soonish I believe.
For the other flat I was going to run in 16mm 3 core SWA with a KMF up front. I am going to ring NAPIT technical on Monday but I know for sure they will probably say don’t put a 100mA up front despite the fact that there will be two 30mA at board.
*
Thoughts welcome please (even OJL!!)
Thanking You!
