Part P and a garden light - do I need an Electrician

[BobbyBrown]

Hi,

I'm planning on extending a current garage lighting circuit that puts on 3 LED lights from dusk till dawn.
I want to light a silver birch at the bottom of the garden (using a 3W LED bulb) so i'm planning on running 40m of 1.5mm SWA back into the garage for this job. Would I need part P approval? I'd terminate the cable on the outside of the garage with a galvanised metal conduit and suitable gland, then link into the current circuit from there

Thanks.

 

[ban-all-sheds]

You need to comply with Part P, but the work isn't notifiable.

I'd terminate the cable on the outside of the garage with a galvanised metal conduit

What do you mean by that?

And how will you terminate the armoured cable at the light?

 

[ericmark]

Depends where you live in Wales you need to notify. In England not required for example.

 

[JohnW2]

Depends where you live in Wales you need to notify. In England not required for example.

I believe |Cheshire is in England, albeit close to Wales.

Kind Regards, John

 

[ericmark]

Sorry using phone it does not always show location.

 

[BobbyBrown]

You need to comply with Part P, but the work isn't notifiable.



What do you mean by that?

And how will you terminate the armoured cable at the light?

I was going to use this

https://www.screwfix.com/p/tower-external-gland-kit-20s-ip66-pack-of-2/25996

to connect the SWA to the conduit - does it need to be earthed at both ends? I've also got the earth from the cable that i'd terminate at the steel box.

 

[ban-all-sheds]

I was going to use this

https://www.screwfix.com/p/tower-external-gland-kit-20s-ip66-pack-of-2/25996

to connect the SWA to the conduit

So you've already got conduit in place, and the end is already threaded?

I'm not sure you're describing what you already have, and what you plan to install, properly.

Galvanised conduit:

does it need to be earthed at both ends?

It's good practice, but you aren't using it as the earth for the circuit, so it's not essential. But you'll need to terminate it at the other end - how were you thinking of doing that? Will the light accept a SWA gland?

 

[BobbyBrown]

I'm probably not explaining it the best.

Starting from the tree:

into this

into SWA cable,
into this:

and finally into this:

 

[ban-all-sheds]

Is that able to accept the size your SWA cable is?

Yes, a 20mm SWA gland will screw into one of those, so the cores from it go into the box. And then......? What do they connect to? Where does what they connect to come from, how do they get into the box, and what connectors will you use?

How will you waterproof it?