Ultimate Handyman DIY Home fitting an earth clamp

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Here we are going to fit a earth clamp to a 15mm copper pipe, this would be done in both Main equipotential bonding and supplementary equipotential bonding.

earth strap  
  1. Tightening screwLock nutstrapEarthing terminal


  When you purchase a earth clamp it will probably look like this one. The clamp is only arranged this way for packing purposes and is not fit with the Label in this position!


earth strap   The label must be removed from the earth clamp as a good electrical connection cannot be achieved with the Label attached to the clamp.


components   Remove the tightening screw and lock nut from the body of the clamp and feed the screw through the round hole on the label.


earth strap   Now place the lock nut back onto the screw and then screw the screw back into the body of the clamp




clean copper pipe   It is of vital importance that the contact between the clamp and the copper pipe is clean, so clean the area where the clamp is to be fitted with wire wool. If the pipe has been painted, the paint needs removing and then cleaning with wire wool.


earth strap on pipe   Here you can see that the pipe is very clean.

start by loosening the locking nut enough, so that there is a clear gap to push the strap through once the strap has been wrapped around the pipe.


loop around  

wrap the strap around the pipe once and feed it through the gap in the body of the earth clamp.




tighten with pliers   Now using a pair of suitable pliers, pull the strap so that it is tight. Using your other hand and a good fitting screw driver tighten the locking screw up. This needs to be a good tight connection!


tighten clamp   The clamp should now be very tight and you should not be able to move it up or down the pipe.

The lock nut now needs tightening to ensure the screw does not loosen due to expansion/contraction from hot or cold water etc.


tighten lock nut   Tighten the nut tight against the body of the clamp so that it cannot work loose.


  You now have a earth clamp that is securely fastened to the pipe, you can now connect the appropriate earthing  wire to the pipe, on the earthing terminal screw at the bottom.

Now please read how to connect the earthing wire to the clamp.



Earthing & Bonding



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