Hello.
I am trying to connect my breadboard to my wall outlet.
I bought this adapter.
This provides 12v with 1A of current. My question is: is it dangerous to touch the cables that come out from it? I read that 0.2 can kill you, and this is 5 times that value.
How can I use the breaboard connected to the outlet safely?
Thank you so much.
nicolopadovandev:
Hello.
I am trying to connect my breadboard to my wall outlet.
I bought this adapter.
This provides 12v with 1A of current. My question is: is it dangerous to touch the cables that come out from it? I read that 0.2 can kill you, and this is 5 times that value.
How can I use the breaboard connected to the outlet safely?
Thank you so much.
Like so much in this world, the answer all depends.
If you just touch the 12 volt cable there is no problem. And you can connect the little adapter to the breadboard if you match the + and the - to the same on your breadboard. That is how most of us do development work.
Beware to ALWAYS remove the power to your project before changing any component.
Paul
It's the Volts that jolts and the mills that kills!
Anything up to around 50V in general will have no detrimental effect on you. The problem comes when the Voltage is high enough across the heart to allow more than about 30mA to flow. That causes to heart to go into spasm (fibrilation?) and can be lethal.
Many of us can tell of experiences with many thousands of Volts from HT supplies that have thrown us across the room, but generally only dented pride is the result because there is very little current.
The biggest danger from low Voltage and high current supplies is shorting them out. A car battery can provide many hundreds of Amps for enough time to melt a spanner, for example. Your 1A PSU is a pussycat in comparison!
Note however that most of the parts on your breadboard - presuming you want to use it for Arduino and other digital electronics - will require not 12 V but 5 V.
So this adapter will not be of much use to you.
More useful is one of the common USB "phone chargers" which provides regulated 5 V at either 500 mA, 1 A or 2.1 A - sometimes others. Often can be found at "thrift shops" or "garage sales" - though mind you at the present moment, they will not be opening! 
12V is often useful for things like motors and so forth, and 7805 or a buck-converter module like the cheap
LM2596 ones are available to generate 5V.
Incidentally:
The biggest danger from low Voltage and high current supplies is shorting them out. A car battery can provide many hundreds of Amps for enough time to melt a spanner, for example. Your 1A PSU is a pussycat in comparison!
With very high current supplies its important to wear protective eyewear (high current sparks spray molten metal drops in all directions), and take off any metal jewelry which could accidental touch the circuit and get hot / melt / vaporize.