Why Use an Earth Rod when a Disc will do?

If you dig a hole and bury a electrode tape, disc, etc then backfill with expensive concrete, but it doesn't give a good test result you have spent over £300 of the customers money without achieving the required outcome. 

With a rod you just screw another extension on and drive it all down  deeper.

Years ago two electricians installed a forty five feet long rod on the old power station site at Stourport on Severn, which is the bottom of Hartlebury Common a sandy heath using no more than a lump hammer. 

If you dig a hole and bury a electrode tape, disc, etc then backfill with expensive concrete, but it doesn't give a good test result you have spent over £300 of the customers money without achieving the required outcome. 

With a rod you just screw another extension on and drive it all down  deeper.

Years ago two electricians installed a forty five feet long rod on the old power station site at Stourport on Severn, which is the bottom of Hartlebury Common a sandy heath using no more than a lump hammer. 

Sparkingchip said:

With a rod you just screw another extension on and drive it all down  deeper.

Into things you can't see ... and provided the wrong kind of rock isn't in the way.

Great if it's a greenfield site, or out in rural areas, but in urban areas, I think I'd be recommending far more caution these days.