old looking earth spikes?

[HDRW]

a suppressor between the two lines will protect anything that is ONLY connected to the lines.

modems are supposed to have pretty high degrees of isolation, not enough to withstand a direct strike (but i very much doubt the master socket arrestors would either) but certainly enough to resist most spikes caused by lighting in the area.

They're not that good! My sister saw the lightning strike the tree in next-door's garden, and it took out her modem. The phone line wasn't directly involved (that's in front of the house), it was either induced voltage or voltage gradient in the Earth that did it.

Cheers,

Howard

 

[Taylortwocities]

But these GPO earths were not rodded, they came off a water pipe.

Not necessarily - mine has a rod beside the front door, below the point of entry of the phone cable - the water pipe is at the other end of the house.

It's disconnected now, but there used to be a single strand bare copper wire clamped to it, running to the "GPO" terminal box inside the house. When he disconnected it the BT engineer said that it was a good quality Earth and that I could use it as such for an amateur radio antenna system - I've never tried to measure it to find out if it is a decent Earth or not.

Cheers,

Howard

Thanks, Howard,

I was beginning to think I had dreamt my GPO Apprenticeship.!

TTC

 

[ebee]

If you earth it are you encouraging electric (Lightning) ?