![]() ![]() The advantage of using watts is that wattage always represents the electrical power of an appliance regardless of the supply voltage. Likewise if you had a 60W lamp switched on at night for 3 hours, its energy consumption would be 60 multiplied by 3 which equals 180Whr (one hundred and eighty watt hours), or 0.18kWhr. So for example if our 200VA (or Watts) appliance is used for 5 hours during a 24 hour period, then the total consumption of energy would be 200VA multiplied by 5 hours which gives 1,000 watt-hours or 1 kWh (one kilo-watt hours), as 1,000 watts is equal to 1 kilo-watt (kW). The appliances daily energy consumption is simply calculated as the VA or Wattage rating multiplied by the number of hours per day it is switched on or being used (watts times hours or W*hr). This volt-amps rating is more or less the same as that given in Watts because Watts is just voltage times current, that is volts times amperes, or V*A which is shortened to just VA. Some manufacturers give the appliances wattage value in volt-amps, for example 200VA (two hundred volt-amps). The electrical power rating of a typical appliance is generally given in Watts which you can find by either looking at the appliances identification sticky label or by the products data given in the user manual. #SOLAR SYSTEM DESIGNER PLUS#The actual electricity generated by a simple DIY Solar Power System is basically a function of its panel size (either individually or as an array), its solar efficiency, positioning, amount of sun exposure plus a variety of other such factors, so it is important that when you are designing a DIY solar power kit that its size will generate enough electricity to cover your average household’s electricity usage throughout the year. So before you start designing a solar power kit, you will need to calculate the total power requirements of all of your homes electrical items. ![]() Whether you choose a whole-house grid-connected system or a self contained off-grid system with battery storage, you may need an array of solar panels producing several thousand solar watts of power just to meet your current household needs (depending on your house size, its energy efficiency, teenagers and so on). Photovoltaic (PV) systems may only cost a fraction of what they did say 25 or 30 years ago, but they are still quite expensive to buy and install, so making some decisions and having a clear idea first before you start will same you money in the long term. Such as: do I want a grid-connected or an off-grid connected system, do I want or need storage batteries as part of my system, and what are my energy requirements and consumption, etc. Household appliances operate just as well on solar generated DC power as they do on mains generated AC power supplied by the utility company.īefore you can start designing your very own DIY solar power system or ready made solar kit, you need to make a few decisions first. Therefore, any photovoltaic solar system must include some form of inverter to convert the low level DC power (typically 12 volts) from the solar panels into the higher level AC power (typically 240 volts) for use around the home. However, most standard household appliances and lighting fixtures operate on higher AC, or alternating current, electricity. ![]() The type of electricity produced by solar panel is called DC, or direct current, the same type that batteries use. These types of solar systems are basically the same type of system installed by pioneering homeowners back in the early days of solar development, the difference today however, is that installing your own DIY Solar Power System has never been easier as today, solar panels are much more energy efficient, lighter, compact and also a lot cheaper. Residential solar photovoltaic systems supply electricity directly to a home using solar panels mounted on a roof or in an open area, such as the garden. ![]() DIY Solar Power System Designing Your DIY Solar Power System ![]()
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