3 ms·
What are the dangers here? What happens if that thin insulation between the copper bars breaks? Can the current jump to you if you use this bare handed?
by ricardobeat 5y ago
What are the dangers here? What happens if that thin insulation between the copper bars breaks? Can the current jump to you if you use this bare handed?
- swayvil 5y agoWell it's only 2 volts. So nothing will happen. Unless your hand is all sweaty maybe. Then maybe you'll feel it. I wouldn't worry.
- sokoloff 5y agoAgree. You can feel a 9V battery on your tongue, but not on the sweatiest of hands IME. (I still quick-check 9V batteries on my tongue.)
- tres 5y agouh... wut I believe it's the amps you need to worry about; "amps kill." I believe it takes about 1 amp to kill a person. This thing is outputting somewhere around 55 amps (if I remember right).
- Robotbeat 5y agoBut for a given resistance, you don’t get the amps if you don’t have enough voltage. V=I*R. Don’t they teach that equation any more?
- CapstanRoller 5y agoCurrent availability is not a guarantee of current delivery. I (current) = V (voltage)/R (resistance) Typical skin resistance can be as high as 100MΩ (mega ohms) but is often cited as 10MΩ. Even if we assume just 1MΩ (1000000 ohms) skin resistance, then at 2.3V as shown in the video the current would be 0.0000023 A or 2.3 μA (micro amperes).
- tres 5y agoTIL. Thanks for taking the time to explain!
- 101_101 5y agoThat's only half true. amp is a nano bitch without volt, and vice versa.
- bufbupa 5y agoIf the the insulation breaks the tool short circuits and the welding tips don't work. Electricity follows the path of least resistance, so given how close the welding tips are together I doubt it would ever choose to go through you; especially any of the sensitive parts of you. You'd have to be bizarrely well grounded for it to discharge current through your body.
- minitoar 5y agoI vaguely remember standing on a rubber mat being standard practice for this sort of tool.
- CapstanRoller 5y agoThe most dangerous thing here is energizing a MOT with its stock deadly high-voltage secondary coil. If you re-wind the secondary to be low voltage as described in the video, it's no more dangerous than any other project requiring a mains power supply.
- kragen 5y agoIt's two volts. You can totally use this bare-handed, no problem. Just make sure you aren't wearing jewelry on your hands.