In america we have 120 then we have 240. The 240 is carried along 2 "hot" wires of 120, so when you put 120 and 120 together you have 240.
Dave is on european power
So he has one hot wire of 240 and a neutral.
Watts are the same no matter what the voltage is. Thats why we are billed by KW used (kilowatts).
Basic electrical class here
1KW (kilowatt) is equal to 1000W (watts)
Using the electrical formula W/V=A
in the US at 120V
1200W = 10 amps
2400W = 20 amps
Now over where dave2 lives where he has a single line of 240 using our formula
1200W = 5 amps
2400W = 10 amps
This is the reason why his house has smaller breakers than ours, and he can get away with smaller wires.
The higher the amperage the larger wire guage. Thats why over here we have 440 V/480 V/600 V/1270 V etc. You could run much larger motor loads, and still only pull several amps.
I hope this helps
This post was edited by TimMiller at 11:30:46 01/17/10.
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