Earth Bonding Gas & Water Pipes

Chris

Whichever way you do it, there is a tendency for the strands to be flattened between the washer and the clamp.

Some brands don't have a separate washer, just the rigid screw head with a "built in" washer as one integral rigid item

If you poke the screw through, one side may be a little flatter than the other, but that's why there is a washer rather than just a screw head - it is able to slope a little whilst making contact.

As above

If you loop round a full 360°, you have 7 strands under most of the washer, but 14 where they cross over, so that must be worse.

Perhaps I should have said only a 180 degree loop in case someone took it to mean 360 degrees!

By my reckoning, you only need to go round 180°, which forms an omega shape.

Fully agree as was my inference

I think quicker and easier to form a loop than poking a screwdriver through the middle.

And less risky to the paws!

The reason for not cutting the cable is supposed to be that if the first termination is removed, the second one remains intact.

As per the various guides, including the old RECs books for contractors on PME. and the late Geoffrey Stokes' book 12.3.1 along with GN8


Plus of course the alleged unwillingness for manufacturers of the BS951 clamps to confirm the 3 + 4 etc combinations. Perhaps you'll have more luck Chris!


Regards


BOD

Chris

Whichever way you do it, there is a tendency for the strands to be flattened between the washer and the clamp.

Some brands don't have a separate washer, just the rigid screw head with a "built in" washer as one integral rigid item

If you poke the screw through, one side may be a little flatter than the other, but that's why there is a washer rather than just a screw head - it is able to slope a little whilst making contact.

As above

If you loop round a full 360°, you have 7 strands under most of the washer, but 14 where they cross over, so that must be worse.

Perhaps I should have said only a 180 degree loop in case someone took it to mean 360 degrees!

By my reckoning, you only need to go round 180°, which forms an omega shape.

Fully agree as was my inference

I think quicker and easier to form a loop than poking a screwdriver through the middle.

And less risky to the paws!

The reason for not cutting the cable is supposed to be that if the first termination is removed, the second one remains intact.

As per the various guides, including the old RECs books for contractors on PME. and the late Geoffrey Stokes' book 12.3.1 along with GN8


Plus of course the alleged unwillingness for manufacturers of the BS951 clamps to confirm the 3 + 4 etc combinations. Perhaps you'll have more luck Chris!


Regards


BOD