Thursday, August 25, 2011

Home Power Usage Calculation For Home Renewable Generation Planning

!±8± Home Power Usage Calculation For Home Renewable Generation Planning

When planning a home renewable energy project you need to work out what it is you want to achieve first. Do you want to produce a certain proportion of your electricity needs or are you aiming for 100% electricity production to effectively take you "off grid"? Perhaps you even want to go as far as producing more than 100% of your own needs so you can sell the excess back to the energy companies via the grid. To be able to do any of these things you need to know how much you use.

You can guesstimate or find some stock values to use if you're not too bothered or you can try and get a more accurate figure for your energy usage. When I say accurate we don't need to win any awards here, a rough figure is fine, we don't need to go into efficiencies of appliances and measure exactly what voltage you're receiving in your house (it's usually not exactly the "standard" value for your country). In this article I'm going to show you two ways to get an accurate enough maximum usage figure for all your appliances.

You can go out and buy an energy meter which works by unplugging your appliance from the wall, plugging the meter in then re-plugging the appliance into the meter. Some are more sophisticated than others, we want one that will give you an instant power consumption reading in Watts (W). Most will also give energy consumption in Joules (J) as well and various other readings. We want a kilo-Watt figure (kW). Some meters will also give a kilo Watt hour (kWh) figure but you don't really want to spend an hour for each appliance to achieve this and we don't really need it. Simply go round your house and measure all your appliances noting down each one on a piece of paper as you go. At the end add them all up and that's the maximum amount of power you will need but remember that many appliances use different amounts of power in different states. A TV, for example will use much more power when it's on than when it's in stand-by mode. A computer uses more power when it's booting than when it's just sitting doing nothing on the desktop, it will use more whilst playing a game than when word processing. Some appliances are "hard wired", often electric cookers and water heaters are like this so you can't use the meter and will have to use the calculation method which I will detail next.

There are many complications you can bring to this method including VA vs. W but I'm going to gloss over all the complexities and make this very simple to do. There are power factors for efficiency and the different power states mentioned above but we'll not concern ourselves with those here. On the back of any appliance there should be a sticker or plate that tells you what voltage it operates at -- V -- and how much current it draws -- I -- measured in Volts and Amps respectively. The formula you need is P = I V. Power = Current x Voltage. As mentioned above "standard" voltages vary from country to country and even within countries depending on the quality and age of your local transformer and the quality and age of cable from the local transformer to your house. Then there's your house's wiring. Don't worry about this though, just use the "standard" value for your country.

In the USA the standard mains Voltage is commonly known to be 110V (although it's supposed to be 120V). My information for Canada has both 120V and 240V so I'm afraid I can't help you there, you'll need to find out for your self. In parts of continental Europe it was 220V and the UK 240V but has now officially been harmonised at 230V although it will be some years until this happens in practice in all areas. Australia it is commonly known to be 240V and New Zealand 230V. As an aside most appliances from anywhere within Europe, Australia and New Zealand will work anywhere else within these areas as they'll work from 200V to 250V, you'll just need a socket adapter. Many modern appliances with a switch mode power supply will work with 110V too without the need to move a switch like you used to see on the back of old computers for 110V or 240V operation but obviously before taking your 110V appliance to Europe, for example, check it first!

An example: In the USA you have a computer monitor that states 110V 1.3A. Grab your calculator and simple multiply 110 by 1.3 to get 143W, write that down on your piece of paper and move onto the next. The same monitor in the UK states 240V 0.6A giving 144W, the same power consumption (allowing for calculation rounding) as in the US because it's the same piece of equipment but using a higher Voltage, it will draw proportionally less current. Ignoring "power factors" this will give you a good maximum power consumption figure for your appliance, most appliances will use less in normal operation.

Once you have all your appliances calculated or measured you can add them all up to get a total house maximum power consumption and simply use that (realistically though everything will not be on all the time so a proportion of that figure would be better to use but that's really a judgment call on your part based on your own usage habits) or you can get a little clever about it and sit down to work out which appliances are on for how long and at what times of day on average and calculate your peak usage in kilo Watt hours (kWh) which will be far more accurate if done properly but far more complex to do.

As you can see it's simple enough to do although a little time consuming. It is necessary though if you have a home electricity generation goal in mind, you need to know what you're "shooting for". One last thing, always remember your electrical safety!


Home Power Usage Calculation For Home Renewable Generation Planning

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Thursday, August 18, 2011

Power Tools for the professional or DIY enthusiast

!±8± Power Tools for the professional or DIY enthusiast

Whatever your background or need power tools are used in almost any environment to improve productivity and generally improve the quality of work. When we refer to instruments of power, we usually refer to wire and power tools cordless power tools. However, there is a wide range of pneumatic tools, which are great if you have compressed air available. Pneumatic tools lack the obvious portability and power tools are often limited toWorkshop environment, where the work is the instrument, rather than the tools to go to work

The drill was the first shot as the most hand tools considered. The first electric drill was 20 in August 1889 in Australia attributed to Arthur James Arnot, patented. This first hole was intended primarily for heavy industrial use and was invented before the majority of communities have also been supplied with electricity. In 1917, Black & Decker has introduced and patented the pistol grip andActivation switch on the more familiar products now available. This was the basis of modern drilling and later models were sometimes sent in thousands. 1961, the first battery-operated drill and as the technology improves and prices come down, we are now in a position where the cordless drills have taken the brother with thick thread.

The story is only to illustrate the development of the drill and were close on the heels of many other corded drill and cordlessPower tools. Net operating units work on a wide range of voltages of 120V in the United States and Europe, we operate two voltages. We have 220-240V power tools in general and in the apartment for less demanding applications, while operating in the field of construction health and safety of high 220-110V 240V to 110V transformers. Battery-powered tools, you can use different types of batteries and work with different voltages. The cordless screwdriver is the least demanding of electric driveThey are tools in the toolbox and power can be as little as 3.6 V batteries included. The battery performance from year to year, as battery technology we moved easily from 9.6V to 36V, so that we have seen the tools now valued supplied with 12 V, 14.4 V, 18V, 24V and 36V. Needless to say, that the instruments are much more expensive 36V 12V tools. The development of battery technology is more than just the construction of larger batteries. The batteries lastLithium-ion or Lithium-ion battery can provide more power and batteries can be recharged quickly.

With the emergence of these higher voltage batteries, we now have a wide range of cordless tools powered by a battery. The 18V cordless circular saw, or perhaps not before the batteries were available in 24V vital. The SDS drill and drill and demolition waste yarn was always mean to the current range of batteries is now waste and demolition of the SDS drill battery36v power pack market operates.

Woodworking power tools have always been popular, both in construction and home improvement. Increasingly, the cordless power tools are used in all industrial sectors, where a few years ago, the batteries are not only man enough to be used, or need to be loaded too often or too expensive. We now have battery-powered saws, drills and breakers Kango, metal saws, hammers, saws, Sanders, SDS Drills, WallHunters, band saws, routers, drills and other specialists guided tools.


Power Tools for the professional or DIY enthusiast

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Monday, August 15, 2011

Voltage Converter Buying Guide

!±8± Voltage Converter Buying Guide

Voltage transformers are used for measurement and protection in high voltage circuits. Should be negligible burden of care to prevent and measured a precise voltage ratio to accurately step the high voltage so that measuring relays and protection devices can operate at a lower potential. Used voltage transformers are used with the device ground (3-pin) and can use both "electric" and "electronic" devices. They can be used in continuous operation for long periodsTime and high power.

There are low-voltage transformer (step down) and high voltage (Step Up) Transformer. While the former are used to lower the voltage and convert it from 220V to 110V, this function through the expansion and conversion of the voltage from 110V to 220V. Some transformers are also two voltages.

If you are thinking of buying a voltage converter, the following tips will help you find the right transformer for your device:

1 Determine whether yourThe device actually requires a transformer. Make sure that the rated voltage to the device, if it were as 100Vto rating 240V which means that the product is dual voltage. In this case, you can use the product in a 220V transformer. If the rated voltage is 110V or 120V, it means that the product is only single volt and require a transformer for use at 220 volts.

2 Once you know you need a voltage converter, you must decide on the right sideArt for the product. Make sure the wattage on the appliance or calculate power by multiplying amps x voltage. Select the transformer according to the power of the device. It 'better to have a transformer that is rated to use at least 25% more than your product watts of power.

3 After selecting the right transformer, make sure the correct adapter plug for the transformer.

4 Voltage Converters and adapters always buy from a source of fameonly.

Samstores is your online source for all types of transformers, GSM phones, video converter, portable DVD player, inverter, etc. The company is one of the largest distributors of household appliances and is good for the distribution of large-known brands for big prizes. Here you can 110V and 220V appliances in North America and 220V for Europe and Asia, and dual-voltage products for use around the world to obtain. Your site provides free hackerseasy navigation and a secure online purchase and check-out procedure.


Voltage Converter Buying Guide

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Friday, August 12, 2011

LiteFuze VT-5000 5000 Watt Heavy Duty Voltage Converter Transformer - Step Up/Down 110/120/220/240V - Fully Grounded Cord (Free Euro Plug) - Patented Universal Output Socket

!±8± LiteFuze VT-5000 5000 Watt Heavy Duty Voltage Converter Transformer - Step Up/Down 110/120/220/240V - Fully Grounded Cord (Free Euro Plug) - Patented Universal Output Socket

Brand : LiteFuze | Rate : | Price : $137.95
Post Date : Aug 13, 2011 03:05:20 | Usually ships in 1-2 business days


  • Heavy Duty Step Up / Down Voltage Converter Transformer
  • German/French Shucko Output Socket - Safely Ground European products with shucko cord
  • Full Grounded Cord with a Free Euro Plug
  • Patented Universal 220V Output Socket - It will accept virtually any plug from around the world.
  • Fuse Protected (free spare fuses)

More Specification..!!

LiteFuze VT-5000 5000 Watt Heavy Duty Voltage Converter Transformer - Step Up/Down 110/120/220/240V - Fully Grounded Cord (Free Euro Plug) - Patented Universal Output Socket

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Tuesday, August 9, 2011

Goldsource® STU-1000 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 1000 Watt

!±8± Goldsource® STU-1000 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 1000 Watt

Brand : Goldsource | Rate : | Price : $59.85
Post Date : Aug 10, 2011 02:42:42 | Usually ships in 24 hours


Made by one of the leading manufacturers in the industry, the Goldsource STU series step up/down voltage transformers offer you a safe, reliable, affordable & convenient solution to converting voltages from 110-120 volts up to 220-240 volts or from 220-240 volts down to 110-120 volts for both home use & industrial applications.

The STU-1000 is rated at 1,000 watts maximum. It features a heavy-duty cord with a standard US 3-prong plug plus a free American to German outlet plug adapter. There are a total of three outputs on the front panel. Two are grounded outputs, one designated for 120 volts with a US standard outlet, the other for 220 volts only with a universal outlet. The last one is a 5V standard USB jack, a unique feature of the STU series & 1st in the industry. And most importantly, all three outputs can be used simultaneously & continuously.

For safety, it's recommended by the manufacturer that the voltage transformer's maximum power should be equal or greater than the power rating of your appliance multiplied by 1.5. For example, if you have an appliance rated at 100 watts, you will need to pick a transformer with a maximum power of 150 watts or greater.

More Specification..!!

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