yep they would certainly trash the electronics on the sky box and boiler tv etcHello Brightspark,
i've used a 5 Kv megger in the past, get quite a good spark from them.
Alec
We used to use 36" Steelsons with a chain hoist to pull it, undoing 80mm af octagonal piston rod nuts on compressors. The open ended spanner we were supposed to use simply opened up and ruined the nut.