installing 1.5 armoured cable, need termination advice please

[Leesparkykent]

Thanks everyone for all the advice, but sticking with Rmoured cable, as already bought and can't return, just need some advice to work with what I have, as per my original post...

are you terminating the armoured in to an adaptable box outside?

 

[Leesparkykent]

I have such a good relationship with the plumbing company that I do boilers for that when I'm faced with such a situation I can stamp my feet and insist that they move the pump next to the boiler to solve the issue. And they actually do it as they know if I say it's not possible, it's really not possible

unfortunately I'm not so lucky with some of the ones I do them for. Its a bit silly as it costs them more 2 have me there all day instead of a few hours when it wouldn't take long to move the pump when they have the system drained down. sometimes when the programmer is near the boiler I've managed to persuade the customer for me to move it to the airing cupboard which I know isn't ideal but it gives me the extra cores I need for the boiler lol.

 

[reddwarf4ever]

are you terminating the armoured in to an adaptable box outside?

No, the armoured cable is to be joined in the loft to existing 1.5 twin & earth then exits the loft through a drilled hole to the outside wall, then drops down to the kitchen, which houses the boiler...then enters the house via another drilled hole ( with an external drip loop ) then joins the existing 1.5 twin & earth cable which runs to the boiler.....so I am not disturbing the cable connections at either end, just interrupting the original cable which runs down an internal wall and replacing with armoured, which will run down the external wall.....with cable clips to secure it...

Wanted to know best junction box for loft space / kitchen....plastic or metal, special purpose box or just a housing with connectors...will use gland kit each end

thanks

 

[Octopus]

Its 3 core

its 3 core...

I very much doubt that. You probably need 4 cord to do it properly

 

[reddwarf4ever]

I very much doubt that. You probably need 4 cord to do it properly

The existing run on, permanent feed cable for the boiler, is 1.5 twin & earth...

 

[davesparks]

I very much doubt that. You probably need 4 cord to do it properly

Why? He's had a standard boiler replaced by a pump overrun boiler, so the extra cable required will only be two cores.

 

[Leesparkykent]

The existing run on, permanent feed cable for the boiler, is 1.5 twin & earth...

A plastic adaptable box either end with earthing nuts replacing the locknuts will be slightly easier IMO if your hell-bent on using the armoured.

 

[davesparks]

No, the armoured cable is to be joined in the loft to existing 1.5 twin & earth then exits the loft through a drilled hole to the outside wall, then drops down to the kitchen, which houses the boiler...then enters the house via another drilled hole ( with an external drip loop ) then joins the existing 1.5 twin & earth cable which runs to the boiler.....so I am not disturbing the cable connections at either end, just interrupting the original cable which runs down an internal wall and replacing with armoured, which will run down the external wall.....with cable clips to secure it...

Wanted to know best junction box for loft space / kitchen....plastic or metal, special purpose box or just a housing with connectors...will use gland kit each end

thanks

Metal for SWA, I'd probably use a besa box.
But then I would also do the job properly including complying with the wiring regulations and testing the job.
But I guess there's no real need to worry about that, it's not like electricity will kill you within a fraction of a second if you make a simple mistake is it?

 

[Octopus]

Why? He's had a standard boiler replaced by a pump overrun boiler, so the extra cable required will only be two cores.

I was working on the basis of Pl, sl, n, and earth !

 

[Richard Burns]

Just choose an electrical enclosure that has enough room to join the cables and to fit the gland nut securely it will also need to be able to seal the entry of a flat cable.
An earthing nut (piranha nut) will make earthing the armour easier but will still need a ring crimp on the earth tail to affix it to the nut.
If you were to clean the coating off the contact area of a metal enclosure and fix an earth connection from the enclosure to the circuit earth then this would also be acceptable, however it can be difficult to get a good clean contact on the metal box (though piranha nuts also have cutting teeth on one face to assist with this.