As they say in the electrical trade "Prove Test Prove" This means take your test instrument and prove it works on a known source, test the circuit to be worked on to see if it is dead then test instrument and prove it works on a known source again to make shore your meter is still working. Then use a minimum of two points of isolation with a sign stating why the circuit is dead. Another words as a professional electrician I do not work on live wiring unless absolutely necessary - then with precautions. ************************************************* Roy Hopkins :-) Tauranga New Zealand ************************************************* > Basically - this is not a good experiment to do. > Death is a possibility. > Earth leak breakers help reduce the number of people who die. You cannot be > certain that an ELCB will always stop you dying. > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.593 / Virus Database: 376 - Release Date: 20/02/2004 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads