installing 1.5 armoured cable, need termination advice please

[reddwarf4ever]

I am replacing a 1.5 internal cable that was run temporarily to give a constant on feed to,my new boiler, as the previous one didn't require this. Unfortunately the only route this could take was from a bedroom ceiling through the floor to the boiler downstairs.

I intend running a 1.5 armoured cable from the loft area, picking up the existing 1.5 cable which comes from the airing cupboard and central heating control /pump. this will then exit the loft, be fixed to the outside wall and enter lower down into the kitchen above the kitchen cupboards and pick up the cable from the boiler....

I will be picking up existing cable so will not be disturbing connections at each end.

I have the 3 core armoured cable and now need to properly connect it to the existing house 1.5 twin and earth...

I believe this is https://www.amazon.co.uk/20mm-Small...007IU33OU/ref=cm_cr_arp_d_pl_foot_top?ie=UTF8
part of what I need. but not sure if to use a metal or plastic internal surface box....I see the armoured cable metal sheath needs earthing, not sure how to connect the existing earth to the either tag, is this with a bolt and nut ? if I use a metal box and it is earthed independently, would this be sufficient , as the armoured cable sheath would earth through its connection to the metal box.

sorry for all the questions, tried to put this in the DIY forum, but it wouldn't let me post there ???

 

[Leesparkykent]

Cant see any reason why SWA would be 'rough'. If the joints are done properly and are internal then I cant see any reason why conduit would be preferable.

would you wire your heating system in SWA then?:willy_nilly:

 

[Octopus]

would you wire your heating system in SWA then?:willy_nilly:

No but all mine is wired internally! Lol

I still want to know if the cable he has bought has enough cores - he seems reluctant to answer my question.

 

[Deleted member 9648]

would you wire your heating system in SWA then?:willy_nilly:

See post #32!

 

[Leesparkykent]

No but all mine is wired internally! Lol

I still want to know if the cable he has bought has enough cores - he seems reluctant to answer my question.

lol the old boiler would of had SL,N,E. New boiler would need SL, perm live, pump live, neutral, earth so probably only needs two extra cores. so would of thought the 3 core the OP has bought would be ok.

I just don't understand why a sparks would opt for SWA....The cable needs connecting to the boiler and wiring centre so got to gland the cable off either end in to a box and make two unnecessary joints in the cable.

 

[Leesparkykent]

See post #32!

Yes I see it?

 

[Octopus]

lol the old boiler would of had SL,N,E. New boiler would need SL, perm live, pump live, neutral, earth so probably only needs two extra cores. so would of thought the 3 core the OP has bought would be ok.

I just don't understand why a sparks would opt for SWA....The cable needs connecting to the boiler and wiring centre so got to gland the cable off either end in to a box and make two unnecessary joints in the cable.

Hum... if you are going to that extreme to run a new cable than I would probably run all the relevant cores in a single cable - but that's just me!

 

[Leesparkykent]

Hum... if you are going to that extreme to run a new cable than I would probably run all the relevant cores in a single cable - but that's just me!

I Agree. maybe he should buy 5core SWA instead haha

 

[davesparks]

would you wire your heating system in SWA then?:willy_nilly:

I have done it once, but then the boiler was in an outbuilding separate from the house and the SWA was underground to/from it.

 

[Leesparkykent]

I have done it once, but then the boiler was in an outbuilding separate from the house and the SWA was underground to/from it.

Same here with an external oil boiler.

 

[davesparks]

Same here with an external oil boiler.

Yeah my one was oil too, I don't understand how it can be at all energy efficient to have 30mtrs or so of flow and return pipe underground!

 

[reddwarf4ever]

No but all mine is wired internally! Lol

I still want to know if the cable he has bought has enough cores - he seems reluctant to answer my question.

the original run on live feed cable is twin & earth....the armoured is three core...a direct replacement...

 

[reddwarf4ever]

I came on here for some basic advice. it. seems this forum is for electricians only or for those who can afford an electrician....
Maybe I would have been better off in the DIY section.....
Update....I have now fitted the SWA cable to an external wall, with proper clamps, terminated with a gland kit, to an earthed wall mounted internal enclosure.....Everything works perfectly...I know electricity is dangerous....I don't know what sort of advice could be given on these forums to ' someone not an ' electrician that wouldnt be deemed dangerous....
So thanks everyone...PS, there is nothing that. cant be discovered via the Internet,I just hoped that asking on a forum such as this would give correct advice, for the most part unfortunately I feel I have just been told off.....oh well....

 

[reddwarf4ever]

I can't remember the installers name,but was unhappy with his performance, I had to help him lift the old boiler off the wall..I asked about the permanent live feed ( reading the manual while waiting ) he said he wasn't an electrician and I would have to sort that myself.....the boiler continually tripped on high temps and the pump didn't run on , as no cable available....he left me with a non working boiler and never returned...I had a plumber sort out the air issue, by combining the overflow with the supply....worked perfectly.....the got an electrician to run a permanent live feed...down an internal wall.( which I have just replaced.

 

[Octopus]

the original run on live feed cable is twin & earth....the armoured is three core...a direct replacement...

So in summary you have replaced one botch with another.

So did you pay the original gas man his bill for his botch job too?

 

[reddwarf4ever]

So in summary you have replaced one botch with another.

So did you pay the original gas man his bill for his botch job too?

Your reply is very rude.....thought this would be a good friendly place to get advice, apparently I was wrong.
IMO Electricians have generally been highly self opinionated and very reluctant to discuss electrical work....whereas plumbers, carpenters etc are much more friendly and always willing to help and give advice......

Some advice on this forum has been helpful and friendly, sadly not yours...replies such as yours just alienates people and is so very unhelpful.