Earthing a cast iron pipe man light

[Kentish Man]

I was quite surprised by how expensive that adaptor is, though of course it is for real hydraulic work.

Are those fittings the same thread as radiator end caps? If so it might be possible to use something like these and drill it for any gland smaller that suits your cable, etc:

1/2" BSP Brass Plain Blanking Plug

Brass plain blanking plug with 1/2 inch BSP male thread (British Standard Pipe Thread)

www.stevensonplumbing.co.uk

1/2" BSP Brass Blanking Cap / Blank Nut

Brass blanking cap / blank nut with 1/2 inch BSP female thread

www.stevensonplumbing.co.uk

(Just random web site showing them, probably available at plumber's suppliers all over the UK.)

Thanks for info. I've manged to get some reducing bushes in sizes
1/2 x 3/8
1/2 x 1/4
1/2 x 1/8
So hoping I can find a gland to fit somewhere across the hole sizes I've got and works with the cable size time for more investigating.

 

[Kentish Man]

Very nice

I had the same conundrum as you with a wall lamp I made using a trombone

I couldn't find a suitable place to attach and earth easily and without affecting the look

So instead I used a SELV transform and a 12v light bulb, depending on your bulb fitting this could be an option for you

Thanks for this information, its something to think about if I can get my original set up to work and look right.

 

[Kentish Man]

I like it too. Normally I'd say it was whimsical but the proportions and posture of this chap strike a chord somehow.

The tee idea sounds good. There are cable glands with BSP threads that would screw straight into the tee but they are not widely available, and a gland that fits your pipe might be too large for the flex. Ideally you want the flex to be near the top end of the gland's adjustment range. E.g. a gland rated for 5-8mm cable might clamp best at 7mm. I would choose a Skintop gland with an M12 or M16 thread and adapt to fit the tee socket with something like this:
M16x1.5F x 1/2"BSPM thread adaptor

Got some reducers in sizes
1/2 x 3/8
1/2 x 1/4
1/2 x 1/8
So hopefully this will make getting a cable gland that bit easier