Gas Safety Certificate

Transco also used to have a clear process, and direct links to suppliers, if they saw evidence of tampering or had reason to suspect it.

I recall once being offered a black box with a mains lead input and a couple of flex outputs with insulated sections terminating in thin spikes to push up into the two end connections of a domestic electricity meter. Doing so injected a current into the current coil of the meter and depending on which way round either reversed or speeded up the meter. Versions were available to run the old disc meters backwards faster but led to the risk of negative readings if used to excess. Asking price in the pubs around Doncaster was fifty quid if I recall correctly. I believe digital meters won't run backwards but they will probably be made to run slower/stop while the cheat device is in operation.

I have never seen a working meter blocker.

I think they work for the sellers? ;-)

Tim

If you have two spikes into the cables either side of a meter and a dead short between them it cannot not work to some extent. The rest is probably bollocks

People usually overlook the obvious when tampering/bypassing meters.

It needs a neutral and they always go for the live.

At least an undetecable one!

There was an electric meter museum round here. The man running it (Wednesdays

And these Leftpondian meters

allegedly have the dials stamped with a fine but loose powder, rather than paint, so the faintest touch will smudge the print. (The glass comes off, a metal ring and seal are there to prevent that, but easy enough to remove...)

Thomas Prufer

As I understood it the two spikes were connected to a transformer which injected a current in antiphase to the load passing through the meter current coil.