bigbassman
Newbie level 1
Re: high voltage dangerous
1 amp can kill you. Ohm's law says I = V/R. If your hands are damp, they could represesent a resistance as low as a few ohms. if your hand-to-hand resistance is, say, 100 ohms one day, and you touch a voltage source of 220 volts, you can easily die. In fact, many people are electrocuted every year by touching household appliances the wrong way.
Nora said:Hello-
I have heard 2 things that are contradictory.
One is that the amps are more dangerous than the volts. That the amps can kill you, but the volts will not.
The other is that certain codes (CE,UL) have a low-voltage directive where low voltage is defined as < 24V.
So using two examples, can anyone explain which version is less dangerous.
I have a toaster with four (20 ohms each) resistive heat load element wired in series (80ohms) and the toaster takes line voltage 220V. So the amperage is fairly low, i=V/R = 2.75A. My heat output is P=iV = 605W
I have a toaster with four (4 ohms each) resistive heat load element wired in parallel (1 ohm) and the toaster takes voltage 24V. Amps = 24/1 = 24.
My heat output is 576W.
Thanks!
Nora
1 amp can kill you. Ohm's law says I = V/R. If your hands are damp, they could represesent a resistance as low as a few ohms. if your hand-to-hand resistance is, say, 100 ohms one day, and you touch a voltage source of 220 volts, you can easily die. In fact, many people are electrocuted every year by touching household appliances the wrong way.