In the US, it is 120V in Europe, it is 220V.Like stated above, kiloWatts (kW) is the measurement of the power and ampere (A) is the measurement of the current. You will just have to determine the AC voltage of your inverter, and it should be the same provided by the grid of your country. Since we had already determined the total AC watts provided by the solar panels or the battery bank, it is easier now to find the total AC current ( amps). Now back to our calculator, we get a total AC power of 4320W: Solar DC Amps To AC Amps Calculator Total Battery Power Available = 9600Wh x 50% = 4800Wh Total Battery Power Available = Total Battery Power x DOD% My battery bank is lead acid, so I will multiply the total stored power by 50%: This table has the DOD% for most battery types however, we encourage you to find the DOD% from your battery specs sheet for better results: Battery Type Depth of Discharge (DOD) % Lithium-ion Batteries 80% to 95% Lead Acid Batteries 50% Nickel-cadmium Batteries 90% Saltwater (Sodium-ion) Batteries up to 100% Sodium Nickel Chloride Batteries 80% This is how much power you could consume out of the stored. It really depends on the type of battery you have and the DOD% (depth of discharge) it has. However, keep in mind that not all this power is used. In this case, I will have a total battery capacity of 9600Wh. Let’s say my battery bank is of a total 800Ah at 12V. Running Electric Stove On Solar Panels (The Full Guide) First, let’s find the PTC rating for the solar panels on the specs sheet: In this example, I will calculate the AC watts my home received from five 300-watt solar panels and a 3kW inverter. This will be the watts you will receive at your home sockets. To get the AC watts of your solar panels, you simply multiply the total PTC wattage of your solar array by the inverter efficiency, which is usually between 85-95%. The ratings given by PTC consider all possible losses, such as those caused by cables.įor this reason, we recommend you to use the PTC rating of your panels when using the above calculator to get an accurate number otherwise, you will have to add the wiring losses to the STC rating. In practice, the output of a 200-watt panel may only be 180 watts. PTC refers to the process through which the panels are tested in real-world environmental conditions. This method will be lower than STC by a small margin. The second, more accurate method is what we call “Performance Test Conditions,” or PTC. How Much Electricity Does a Mini Fridge Use If you’re a solar beginner, use the converter below to see how much DC watts will be equivalent to AC watts, and then keep reading for additional information on this issue. When DC power is converted to AC power using an inverter, some energy is lost in the process. However, the vast majority of our home electronics are made to operate on AC power (120-240V). The solar panels generate direct current (DC), and battery technology is optimized for DC storage (12v, 24v, 48v). Let’s find out which offer will be the best in this case. An example would be comparing two offers for $30,000 each if one was expressed in AC watts and the other in DC watts, then there is a big difference. Not to be confused with watt-hours, which is a separate unit of measurement.Įven though AC watts and DC watts have the same unit (watts) and power is power (it never changes), however, in this case, when converting from DC to AC or vice versa, a power loss will occur, and that’s why DC watts are not the same as AC watts.įor this reason, it’s important to know if the quoted system’s power is in AC or DC watts, as these are very different. A system rated at 3000 watts (W) will generate 3000 watts (or 3 kilowatts) under ideal conditions. Typically, watts will be used to describe how powerful your solar array is. Air Conditioner (AC) Power Consumption Calculator
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