A leg that has never been a live wire

Y’know, it’s not the radiation that kills you,
Working on a microwave.
The low waves just make you hot.
It’s the capacitor–
If the two plates hover,
One hair and a half apart,
And one builds up a charge,
It’s the reaching.
It’s the discharging.
It’s the gentle nudge when you find out
Just how wide that gap had to be.