Original poster: "colin.heath4 by way of Terry Fritz <twftesla-at-qwest-dot-net>" <colin.heath4-at-ntlworld-dot-com> hi all just a post to say do not touch output of tela coil especially without the nst grounded. wow it hurt like crazy but then most sensible people would nt i got a jolt by accident and it hurt like crazy (not the normal tickle with a grounded nst) colin heath