amprobe AT2005
live and dead circuits
Ct clamp for live circuits
locate shorts
you can get it right here on this site follow the link for amprobe products or grainger carries it pricey but worth it
I was told by a service tech at amprobe that the older style AT2005 is more reliable than the newer AT4005, the 4005 is not polarity sensitive other than that they do the same thing