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So, the wattage measurements are the same. A 220 volt device in Europe will pull half the amps of the same device using 110 volts in the US. People ask this all the time and again the answer comes down to watts. If 220 volt is more dangerous, why is it more common in Europe?

If your air conditioner runs off dual 100 amp circuits, that’s 44,000 watts and that’s going to send you to the hospital at least. Depending on what you’re running, it could be a lot more dangerous. However, it’s true that most home circuits using 220 volt are on at least dual 20 amp circuits so, yes, they’re more dangerous. But if you have a 220 volt circuit with two legs of 10 amps, that’s still 2,200 watts so it’s not more dangerous than a 110 volt one. If you have a 110 volt, 20 amp circuit, giving you 2,200 watts, that will sting. The real question of whether a 220 volt connection is more dangerous than a 110 volt one comes back to watts.

#220 volt vs 110 volt plus#

Unlike 110 volt which connects to a single breaker, 220 will generally connect to a pair of breakers so it can supply 110 volt on two different legs, plus a neutral wire and a ground. In the US, a 220 volt connection generally has four wires. Talking about 220 volt connectionsĪ typical 110 volt connection has three wires: a hot, neutral, and ground. It means you don’t get too much of a jolt.

#220 volt vs 110 volt skin#

Skin isn’t a terribly good conductor of electricity, which is good. When you touch a hot wire, the amount of electricity you get is dependent on what’s being supplied, limited by the resistance of your skin. This is largely painful, but not likely to kill you. In a 20 amp circuit in the US, the maximum wattage is 110 x 20, or 2,200 watts. But, it’s not going to sting as much as a 500 volt, 50 amp current which is 25,000 watts. No question this will sting a bit if it hits you. Watt measurements are really the answer to the question of “will this kill me?” because they show both volts and amps. A typical fast charger for a phone is 5 volts, 2.1 amps. So you get one number that tells you both. Watts are a great way to measure electricity because watts, simply, are volts multiplied by amps. That’s for safety, so that the current doesn’t melt the wires and cause a big old fire. If more amperage passes through the breaker than it’s rated for, it will trip. The amperage rating on the breaker is the amount of amperage that can pass through it. Your circuit breakers are measured in amps. But really it’s more about the amps, and therefore the watts. All other things being equal, a 220 volt shock is going to be twice as dangerous as a 110 volt one. You would be forgiven for thinking, “well I got zapped pretty bad on a 110 volt outlet once, getting zapped on a 220 is probably twice as bad.” And yeah, it can be twice as bad. The third kind is 5 volts, which is what comes out of USB ports. Here in the US 220 volt outlets are reserved for things like air conditioners, large appliances, and home EV chargers. Much of the rest of the country has outlets that supply 220 volts, though. 110 volt is what comes out of a normal outlet in North America. And in the context of answering the question “will this kill me” it’s not super helpful.īroadly speaking there are three kinds of voltage you’re likely to encounter. That’s a good article, but it could be better. I have yet to find an article that really explains volts, amps, and watts in a way that a normal person can really understand. A little bit about volts, amps, and watts You know I have to say stuff like that to satisfy the bloodsucking lawyers, right? Now, we can get down to business.

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