Electronics > Beginners
Hobbyist safety advise when working with AC
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kenneth1212:
The RCD will not trip if you touch live and neutral. Only live and ground. 

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aheid:
When changing a switch or similar simple jobs, I make sure to a) measure the voltage between the conductors, and between the conductors and ground to make sure it's all off before I start and b) not be alone while I'm doing it.

If I were to work on circuits involving mains I'd have some very easy way to cut all power, and make sure to wear safety glasses, wouldn't want shrapnel from a capacitor blowing up or something ruining my eyesight.
malagas_on_fire:
if you are planing to shoot some videos be sure to include some warning signs of electricity or even off camera to prevent someone to mess around and get zapped in the process.

For example print one of these or more:

https://www.publicdomainpictures.net/pt/view-image.php?image=109279&picture=danger-high-voltage-warning-sign

And plastify with tape used on orders on both sides.
max_torque:
It's worth considering there are two main, and rather different reasons for someone to receive an electric shock:

1)They deliberately touch a conductor that was live (compared to their body "earth" reference) when they thought it wasn't live

and

2) They accidentally touch a conductor that they knew to be live due to making a mistake or error


Protecting against those two events is really quite a different challenge.  Preventing the first one comes down to proper knowledge, preventing the second comes down to proper working procedures!


i like to use a variac or similar as well as an isolating transformer for "Messing around" with AC voltages, simply because it gives you the ability to slowly ramp in the supply, and to reduced it when you are probing around.  A lot of circuits will happily run (at reduced power) on a lower AC voltage, which intrinsically brings a lower risk of serious electrocution whatever the circumstance....
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