Sy feeding school boilers.

mydigitalhome · Jul 26, 2018

Thats what your departures section is for on your certificate if you are the designer and you feel that is suitable - not based on price - cheap is not always best, then you can use it. Write down why you have taken decision for it use and be happy. As you say miles of it has been installed without issue enjoying its properites.

Spoon · Jul 26, 2018

mydigitalhome said:
Thats what your departures section is for on your certificate if you are the designer and you feel that is suitable - not based on price - cheap is not always best, then you can use it. Write down why you have taken decision for it use and be happy. As you say miles of it has been installed without issue enjoying its properites.

It is only recently that they have started putting "Not suitable for fixed wiring" in the specs.

mydigitalhome · Jul 29, 2018

Hi, its to do with the BS for fixed wiring and a different one for SY cable from memory. I'm sure someone on here can remember the actual regs involved. It may come to me once i've had another Brandy worth trying anyway.

mydigitalhome · Jul 29, 2018

Thinking could consider H07ZZ-F as its a heavy duty, halogen-free, harmonized, and flexible multi conductor cable as alternative flexible cable. Interesting to see what the cost would be as an alternative. Worth speaking with their tech. line as to its suitability.

Deleted member 26818 · Jul 30, 2018

Not sure that using SY to connect boilers would fall under BS7671.
Yes if it were used to feed the isolator, but from the isolator to the boiler no.

Ian1981 · Jul 30, 2018

spinlondon said:
Not sure that using SY to connect boilers would fall under BS7671.
Yes if it were used to feed the isolator, but from the isolator to the boiler no.

I’d have thought the other way round no?
Fixed wiring being from the OCPD to the boiler isolation point?