Brass gland plate for SWA

[Lucien Nunes]

Has anyone used a brass gland plate to earth a line of SWA glands e.g. at a DB, and had anyone such as an NICEIC inspection flag it up as non-compliant?

I am proposing to screw a flat plate of brass onto the top of the DB and mount the glands through it with their usual locknuts, A brass bolt through the plate will take the lug of a cable running to the earth bar. I consider this to be a suitable way to earth the glands, but someone else is saying that they did something similar and their NIC man pulled him on it and demanded separate banjos or piranhas with individual flyleads.

Any thoughts?

 

[stevethesparks]

No problem whatsoever as far as I'm concerned.

 

[Rockingit]

Nor me - except - a pedant could argue that if when you open the packet of SWA gland and find a banjo (as you do) then 'that's how the manufacturer intends.....'.

 

[DefyG]

Nor me, can’t see that brass glands on brass plate are really any different than brass banjo’s being bolted together!

 

[timhoward]

In some ways it's better - fewer connections to maintain.

their NIC man pulled him on it and demanded separate banjos or piranhas with individual flyleads.

Might be a distinction between using armour as CPC and simply earthing the armour? A single cable to earthing bar from plate may have not met collective requirements for a group of CPCs.

 

[Lucien Nunes]

Someone like to confirm what that is?

 

[timhoward]

Someone like to confirm what that is?

Don't have BBB with me, Section 543 (can remember that nice number!) covers sharing cpc's somewhere in it - something about the highest current expected from a fault on one of the circuits. Requirements for minimum CPC size in general (as separate) need to be met too. Probably no more than you were going to do anyway.

I was more trying to convey that knowledge of CPC sharing can be sketchy as it isn't common and anything that looks unusual can easily cause an assessor to spit dummy out.

 

[Rockingit]

543.2.9 suggests this is OK to me, although I guess easily confused with 543.2.7

 

[littlespark]

It’s used to be any tight metal to metal contact would suffice for earthing.
Banjos if you were glanding through plastic, but metal, especially brass, don’t need them.

 

[ipf]

Cant see anything wrong with it, myself. Once fitted, it's solid, less complicated, room saving, easier and it's fixed to, and therefore part of, the metal enclosure. With the earth bar link, extremely satisfactory.