I doubt it will fail in such environments (at least, for most of the time). The problem with meeting CAT ratings is transient voltage spikes- I don't recall ex

I doubt it will fail in such environments (at least, for most of the time). The problem with meeting CAT ratings is transient voltage spikes- I don't recall exact numbers, but some for some of the higher CAT ratings multimeters are required to withstand (meaning continue to operate, or fail in a safe way, with no harm to operator) several kilo-volts. Cheaper multimeters just literally blow up: http://www.youtube.com/watch?v=M-FZP1U2dkM http://www.youtube.com/watch?v=M-FZP1U2dkM