On May 6, 5:01 pm, Mike Tomlinson wrote:
Indeed. This is an important principle of the UK wiring code. It's
referred to as "equipotential bonding." Such a concept, of course,
would be far beyond the understanding of w_'s lone brain cell.

UK wiring code alone does not provide sufficient earthing for
something not intended to address. Code addresses earthing for human
safety. Proper earthing for surge protection must both meet and
exceed code requirements. Essential for surge protection is that all
utilities be earthed very short to the same earthing electrode. UK
code does not require that. In fact, many UK master sockets have no
earthing connection meaning no phone line protection.

Mike Tomlinson posts insults when he does not have facts. Those who
would promote magic box plug-in protectors are same who also post
these insults. Same technique used by Rush Limbaugh to prove Saddam
had WMDs.

Single point earth ground remains essential to surge protection -
which only makes people like Mike Tomlinson post more insults. A
protector is only as effective as its earth ground. An effective
protector makes a 'less than 10 foot' connection to that earth ground
rod.