On August 2, 2019 at 13:25, buzz said...
Been there.
In my teens, using a kit built scope with a simple two wire power cord, no grounding, I had the scope "floating" across the series inductor in an ancient power amplifier's plate supply that I was probing. While contemplating the trace, not touching any part of the circuit, I placed one elbow on the scope's chassis and the other elbow on a signal generator. !*! B+ across the elbows! I always observe the one hand in a pocket rule. I was ... er ... shocked that I was shocked. My elbows are still buzzing a bit from that one.
While I was beginning to learn about refurbing/repairing tube guitar amps, I saw the frequent recommendation that when probing inside, a wooden or bamboo chopstick should be used and since I have plenty of the bamboo type, that's what I use. Works well and I haven't been zapped, yet. One of my amps has B+ over 500VDC and I'm extra careful with that one.
I used to work on ski boats and one day, I needed to adjust the advance on an HEI distributor- while I was leaning over to get into position with the timing light, I leaned too far and to catch myself, I put my other hand on the exhaust manifold. Got a handful of >50KV. That was fun. Oh, yeah.
