How Did we cope back in the Day

1992 BS7671 16th Edition who remembers doing Supplementary Bonding to everything in Bathrooms..
How did we connect the 4mm in the fittings

cliffed said:

1992 BS7671 16th Edition who remembers doing Supplementary Bonding to everything in Bathrooms..
How did we connect the 4mm in the fittings

Click to expand...

with a hammer ,we meet again Mr bond.

Every time I go into our workshop toilet I look at the pipework. Copper pipe going to a plastic valve and then a 6" length of copper pipe coming from the valve to the plastic tank. Each side of the plastic valve is the earth strap with a short length of earth cable 'earthing' the otherwise totally disconnected 6" piece of copper pipe. Ah, the good old days.

In 2017 aberdeen city Council were still insisting on bonding kitchen pipes and sink ,a real pain in the arse as you had to get the apprentice to fit a rad clamp to sink before it was fitted other wise it was a faf.also bathroom rads and pipe work and steel bath all while running in main bonding conductors and rcbos.that was the relaxed rules before it was a 4 mm from light switch to shower to pipes etc .

A lot of fittings came with, and possibly still do, come with a big earthing screw on the body of the fitting. Big enough for a yellow crimp with a hole.

The big trouble was getting a loop in wiring system, switch wire drop and a 4mm through a tiny tiny access hole with a loose gromit.

(Gromit? Grommet?….. more cheese Grommet?)


I think I started on the 15th in 1990…. And I remember as an apprentice being told to bond everything….. I think I’ve still got some radiator clamps from that time. Instant rust spot.

littlespark said:

A lot of fittings came with, and possibly still do, come with a big earthing screw on the body of the fitting. Big enough for a yellow crimp with a hole.

The big trouble was getting a loop in wiring system, switch wire drop and a 4mm through a tiny tiny access hole with a loose gromit.

(Gromit? Grommet?….. more cheese Grommet?)


I think I started on the 15th in 1990…. And I remember as an apprentice being told to bond everything….. I think I’ve still got some radiator clamps from that time. Instant rust spot.

Click to expand...

Plumbers will have cut them all off by know lol .the steel baths we bonded had a large tag like think you pulled out but had to scrape paint /finnish off to get to steel ,we just used earth clamps on bath .also if you pulled it to far it broke through the bath and took the enamel off .all this when every circuit in room was on an rcbo and plastic water incomers in houses .but that's what the council demanded .clerk of works used to come round once a week looking for radiator clamps we had missed.skirting board off palava .we were doing 40 kitchens and bathrooms a week at one point so was very easy to miss out bonding because joiners just cracked on with there bit ,some would phone most wouldn't