Warning. The risk of having a floating ground

[Palkina]

As many of us may be already using 3D printers and/or even using 120 VAC sourced power supplies for our battery chargers, the following is a case when some one got shocked while using a 3D printer.

https://www.youtube.com/watch?v=v1OuYg7AJjw

The proper explanation can be found here.

https://www.youtube.com/watch?v=3jYZDLOV4Jc

Hope this will contribute to having a safe working bench.

[Andy Hoffer]

Yikes!  94 volts leakage!  Good post Carlos.  Grounding is very important!

Thanks for sharing.

Andy