This is the potential power a generator or battery is capable of giving. Whether that is by making a motor move, giving sufficient energy for a heater to start emitting heat, or exciting a wire inside a light bulb so it lights up a room.
The voltage expresses how big of a motive the electrons have to run along a wire. If you connect a simple circuit to a 1.
The water pressure at the faucet is like the voltage in a circuit. Current can be direct DC or alternating AC. This depends mainly on how electricity is generated. A battery generates electricity through a chemical reaction that preserves the polarity of each terminal at all times.
AC current is generated through a dynamo that converts motion into electricity. The dynamo changes its polarity 50 or 60 times per second, and this is what creates the frequency component of an AC current.
Devices that use up higher amps are often run by AC sources, and involve moving powerful motors, or creating a large amount of heat. Air Conditioners and stoves are good examples. Voltage alone, or current alone, does not describe the state of an electric circuit properly. This entity is the product of both the current and the voltage. This is a good predictor of the electric needs of any appliance, as well as the capabilities of an electric source.
Generators are often rated by their wattage. For example, RV generators often come at watt ratings. Most devices run for a certain duration of time. You can leave the lights on for three hours, the TV for half an hour, the electric kettle for a minute, the hair dryer for 10 minutes, and the air conditioner for the whole day.
Each one of these devices has a power rating in watts, and it runs for a specific amount of time in hours. This is the regular power consumption of a household. This also describes power consumption, but in the specific case of using a battery. The rating describing the battery capacity is often given as amp hour ah , which is the amount of power it can supply in a certain amount of time before depleting.
This rating is often twice the amount that you can use for your appliances. So when you read the rating on the battery label, divide that amp hour value by two. Note that the Amps below are typical.
Some appliances may require more or less depending on their efficiency and size. If you need to know exact amperage ratings you can check the data plate on any motors, appliances, or electronic equipment you are using. This information might provide wattage requirements rather than Amps. Here is a simple formula to help you convert some common electrical terms. When a breaker goes off, especially the main breaker, you want to figure out how much total current you are using. A certain level of current is what sets off the breaker.
The simple thing to do is look at everything you have plugged into a circuit of receptacles and add up the maximum current that the circuit might be subjected to if everything is plugged in and operated at once. When you see an appliance with a label that only lists the wattage, you may need to figure out the actual maximum current it will draw. There is a simple formula for converting the maximum wattage rating of an appliance to a maximum current number.
For example, if you have a coffee pot that is rated at watts, you can easily calculate the maximum amount of current that coffee pot will draw by dividing that wattage number by volts , which is the voltage available on your standard AC receptacles in your RV. This is the best. Thank you for putting it in normal people wording. JanSIrons December 2, Jan Reply. Sadye October 30, Excellent blog post. I certainly love this website. Continue the good work! Jim September 1, Dale McMahan February 18, Rebecca March 28, Ken February 12, Ted April 12, Dan August 15, Luann January 4, JanSIrons January 9, Lorraine August 18, Happy trails, Lorraine from NorCal Reply.
Tim November 1, Joseph Azzara December 27, Just want follow up comments. Great info. Easy to understand. James Mathis October 8, L widdis August 26, JanSIrons August 26, Darren March 5, Jed August 15, Caleb September 13, Oscar September 26, Michael Doherty April 16, Camperguy65 June 24, Mick October 14, JanSIrons October 14, Michael Doherty July 15, Elizabeth February 24, Thank you for breaking this down.
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