OK, on a different thread there are 10 pages of proper grounding in houses. Interesting but not fun. So, I have a serious question that many might find interesting in this forum. Can everyone post if they have been shocked before and how it happened and also the voltage and current of the shock if they know, or maybe a guess. I will start out as I have been shocked and it was not fun at all. Had me jittery for two days.
I was working at Bosch Automotive Group automation division repairing industrial power supplies and controllers for the line robots and associated machinery. The equipment at that time (25 years ago) was 300volt DC to the controller and then chopped (3 phase) up to the motor. I "fixed" the controller and hooked it up to a motor and turned it on to give it the test cycle I used. The motor was mounted in a stand with wheels and was next to my bench. The motor size was probably 16 long x7 high inches (guessing after 25 years). It was happily spinning away and I had my hand on the controller and put my work shoe up on the metal stand for the motor. I received a shock that went through my teeth, and my tongue, down my back muscles and I turned off the power. I had a funny taste in my mouth, my back and teeth hurt. It really hit me hard. So, I grabbed my trusty Fluke and checked the spot where I had my hand and the motor stand. 108 volts and less than one amp. I "think" 3 milliamps if I remember correctly. After that I never ever made a connection like that with equipment I was working on. Being I needed a quick and dirty fix I just took some 20ga wire and hooked it up to the controller so it was grounded out to near zero volts.
I guess we could also talk about capacitor explosions too, and inadvertent arc welding in front of your face on the bench. Very scary stuff but I lived through it.
I can't wait to hear some good stories from all of the guys on here who have real world experience!
I was working at Bosch Automotive Group automation division repairing industrial power supplies and controllers for the line robots and associated machinery. The equipment at that time (25 years ago) was 300volt DC to the controller and then chopped (3 phase) up to the motor. I "fixed" the controller and hooked it up to a motor and turned it on to give it the test cycle I used. The motor was mounted in a stand with wheels and was next to my bench. The motor size was probably 16 long x7 high inches (guessing after 25 years). It was happily spinning away and I had my hand on the controller and put my work shoe up on the metal stand for the motor. I received a shock that went through my teeth, and my tongue, down my back muscles and I turned off the power. I had a funny taste in my mouth, my back and teeth hurt. It really hit me hard. So, I grabbed my trusty Fluke and checked the spot where I had my hand and the motor stand. 108 volts and less than one amp. I "think" 3 milliamps if I remember correctly. After that I never ever made a connection like that with equipment I was working on. Being I needed a quick and dirty fix I just took some 20ga wire and hooked it up to the controller so it was grounded out to near zero volts.
I guess we could also talk about capacitor explosions too, and inadvertent arc welding in front of your face on the bench. Very scary stuff but I lived through it.
I can't wait to hear some good stories from all of the guys on here who have real world experience!