I’m almost finished building a waterscooter, and have worries about personal safety with regards to electrocution.
I would like to get some help with knowledge with my particular case.
I have already tested my build in a lake and not felt any symtoms of electrocution like tingling sensation and muscle cramps (symtoms according to this source: Electrocution In Water: Everything You Need To Know - Electrocution Lawyers, PLLC ).
However I wasnt using the max current in the escs at that time due to “low rpm protect” on in the ESC firmware.
Some info about the electronics in my build:
I am powering 4x M100 motors with 4x 20A ESC (Little Bee FVT 20A Pro 2-4S OPTO BLHeli) and a 11.1V Lipo battery (7800mAh, 40C).
The minuspole of the battery is exposed to water in the “emergency off pin” (see image) as a way to break power quickly if needed.
The solder connections of the motors are covered in epoxy (Power epoxy loctite). But small parts of the wire are exposed after having bent the cables after the adhesive hardened.
The 3 switches are waterproof and the enclosure have been tested to be waterproof when submerged. Not depth tested.
Should I be worried?
Btw. This source claims that its although the current needed to kill a person is small, its voltage we should be worried about when it comes to electrocution, and 12 VDC isnt enough to harm you.
A car battery can’t electrocute you – The Denver Post