In the U.S., the historical standard for household equipment is to accept a minimum of 110 volts; in Europe, this number is 220 volts. Occasionally, this number is misread as watts, which is not the same type of unit.Continue Reading
In the U.S., household electricity is supposed to arrive at 120 volts. However, poor household wiring, long extension cords and power company issues often cause it to arrive with slightly less or more, hence the original 110-volt minimum. Appliances tolerate minor fluctuations, but the range for which a U.S. appliance is built is well under the minimum accepted by a European appliance, and attempting to plug a 120-volt appliance into a 240-volt outlet invites overheating and electrical fires. To prevent this kind of accident, the plugs on U.S. and European equipment are of different shapes. Some equipment marketed to international travelers accepts both voltages, and many computer power supply units have a switch to toggle between the two.
Referring to 110 or 220 watts instead of volts represents a common misunderstanding of electricity. A watt is a unit of power, whereas a volt is a measurement of electrical pressure, as it is colloquially known. Watts are equal to volts times the amount of electrical flow (current) in amperes.Learn more about Electrical
Telephone wall jack wiring diagrams vary based on the number of phone lines attached, but Ask-The-Electrician.com shows a clear diagram of a standard residential phone jack and gives detailed instructions for installation. The Ace Hardware Corporation website offers several diagrams for single and multi-line phone jacks.Full Answer >
At 115 volts of current, 115 watts is equal to one amp, but the number of watts to equal an amp varies based on the current. If using a 12-volt battery to power the circuit, 12 watts is equal to one amp.Full Answer >
Thirty-amp fuses can handle both 120 and 240 volts, which are the common voltages in the United States. Fuses or circuit breakers prevent too much current going through a circuit and reduce the risk of fire.Full Answer >
A fresh, single AA battery supplies between 1.2 to 1.65 volts, depending on its composition. Nickel-metal hydride and nickel cadmium batteries put out 1.2 volts and are rechargeable. Lithium, zinc-carbon and alkaline batteries put out 1.5 volts but are not rechargeable. Nickel-zinc batteries put out 1.65 volts.Full Answer >