H
Heisenberg
they're only bad things to own if they are used inappropriately, if you can't trust yourself to own one just incase you use it for safe isolation then that's not the testers fault is it?
for what they are they are useful so don't get put off getting one,
I rest my case...
http://www.electriciansforums.net/e...1064-plumbers-replacing-electric-showers.html
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