#AMP V WATT HOW TO#
#AMP V WATT FULL#
#AMP V WATT PORTABLE#
#AMP V WATT TV#

What happens if you increase the pressure in the tank? You probably can guess that this makes more water come out of the hose. Let's say you have a tank of pressurized water connected to a hose that you are using to water the garden. 10.8 amps × 12 volts = 129.Let's see how this relation applies to the plumbing system. You calculate the maximum watts used by the oven by multiplying amps times volts. The oven is rated at 12 volts and 10.8 amps.

#AMP V WATT PORTABLE#

Let's say you have a portable travel oven you want to use while on a road trip in your campervan. To convert amps to watts, multiply amps times volts.Īlternate abbreviation: P = I × V Example

Turns out your panel is a 24 volt solar panel. Simply divide watts by amps to get volts.

To convert watts to volts, divide watts by amps.Īlternate abbreviation: V = P ÷ I Exampleįor example, let's say you have a 300 watt solar panel that is also rated at 12.5 amps. In this simplified example, your battery bank needs to have a capacity of at least 600 watt hours to meet your energy requirements. You want your battery to last for up to 3 days without recharging, so you could size your battery bank by multiplying the two numbers together to get the total energy usage of your system over the course of 3 days. All together, you expect your devices to consume 200 watt hours per day. (Though often it is expressed in amp hours, which must be converted to watt hours or kilowatt hours.) So, if you know your estimated energy usage, you can use that number to size your battery bank.įor example, let's say you're designing a small off-grid solar power system. The amount of energy a battery stores can also be expressed in watt hours or kilowatt hours.

#AMP V WATT TV#

75 W × 2 hrs = 150 WhĮach day, your TV uses about 150 watt hours of energy. If you have a 75 watt TV that runs for 2 hours each day, for instance, you can estimate its watt hours (Wh) by multiplying watts by hours. To do so, you need to know the wattage of all your devices as well as how many hours per day each one will run on average. To estimate energy usage of your house or DIY electrical system, you need to convert watts to watt hours (or watts to kilowatt hours). Power is rated in watts, but energy is rated in watt hours or kilowatt hours. So a 250 watt inverter would be insufficient, but a 500 watt inverter would work. Your inverter needs to have a watt rating higher than this total. You'd find your system's max power draw by summing the wattage of these two devices. This is the total watts being used if all your devices were running at peak power simultaneously.įor instance, let's say you plan to run a 200 watt fridge and a 75 watt fan off your inverter. If you know the wattage of all your devices, you can sum them together to get your system's total power draw. Knowing the wattage of your devices helps you do three main things when it comes to DIY solar power: During a cooling cycle, a fridge is using much more energy than when it's simply insulating. Fridges, for instance, enter a cooling cycle when the internal temperature gets too high. In other words, the device may not be always using that much current. It's important to know that the current rating listed on a device is usually its max current rating. So, in this example, your 12 volt fridge uses a max of 60 watts. To estimate its max power consumption in watts, you multiply its voltage by its amperage. You look at its product specifications and see that it has a max current of 5 amps. Knowing a devices wattage is necessary for estimating how much power it's using at a given moment, as well as how much energy it consumes overall.įor example, let's say you have this portable 12 volt fridge. It turns out your panel is a 100 watt solar panel.

#AMP V WATT FULL#

To calculate the watts produced by the panel in full sun, you would multiply volts times amps. Let's assume you have own the following solar panel that is rated at 18.6 volts and 5.38 amps.

#AMP V WATT HOW TO#

Here's a simple example illustrating how to convert volts to watts. The conversion formula remains the same.Īlternate abbreviation: P = V × I Example Occasionally, you may also see watts abbreviated as P instead of W and amps abbreviated as I instead of A. To convert volts to watts, simply multiply volts times amps. 5 Volts to Watts Volts (V)Ĭonverting volts to watts is easy - you just need to know the current in amps. Here are some tables converting common AC and DC voltages to watts at various levels of current.

Amp v watt