Thursday, July 10, 2014

Generator Uses: What Modern Man Must Appreciate



The world is a much productive and safer place because of electricity – this is fact. But without generators that sustain the need for electrical supply during emergencies, do you ever stop to think what would happen where hours, days or even weeks are spent without electricity? Here are generator uses that man only tends to appreciate when the main supplier of electricity goes down -

A Steady Backup Power

Generators are mainly used for electric power generation. There are two main types of generators which are portable and standby generators. These generators ensure that important appliances can still run even during power outages.

A standby generator provides backup power in many homes and offices. This is often permanently installed outside homes and commercial buildings. It is plugged to the home wiring or electrical circuits.

Standby generators are manufactured to automatically detect electric supply disruption. They are used to supply power within just a few seconds after the power has been cut off.

Hospitals and nuclear power plants – not just homes – need steady electrical supply even during power outages. Hospitals need light, power machines, air filtration devices, and many such machines that keep patients alive. Should the power grid fail, these hospitals need a means to keep the machines functioning, hence, generators are always on the standby inside their buildings. Backup generators provide the minimum power level so that life-saving machines get to run during an outage.

While it may seem strange that a nuclear power plant needs backup power, this is actually the truth. Backup generators are crucial in safely shutting down nuclear power plants during power loss. Backup diesel generators can keep batteries charged which, in turn, allow the reactors to shut the fusion down at a slow pace. This process prevents an event called the nuclear meltdown.

Power in Remote Areas

A portable generator, on the other hand, is used in places where there is no supply of electrical power. This is also used in sites where less power is needed such as in the case of construction and camping sites. This kind of generator can run appliances such as refrigerators, TVs, even furnaces. 

People who live off the grid, those who do not have much choice when it comes to power, can make good use of diesel or gas generators. These devices are compact and efficient and they can provide electrical power for many days. These power sources can give a small home ready access to heating, lighting and cooking.

As for construction sites that need higher amounts of electrical power, there will always be those large generators to supply their electrical needs. Bigger generator sets can run tools, task lights, and eventually get the job done. Generators keep the construction workers working even during the wee hours of the night.

Generators come in different output power and sizes. Your choice in purchasing the right kind of generator is dependent upon factors like voltage rating, wattage capacity, fuel efficiency, fuel type, portability, noise level, and even price.

Most generators run on fuels like propane, diesel, gasoline and natural gas. Each of these has its own pros and cons. But if you want to be earth friendly then you must use only natural gas.

Natural gas is efficient and is also highly dependable for different domestic uses. It is always available compared to other fuel types. Even when there are international events such as oil price hikes, you can count on natural gas generators to provide good, clean power for you.

Ample Power Supply

Other generator uses include meeting the basic power demands of a small household. Purchasing larger generators means you will consume more fuel in order to power more and bigger appliances.

Should you have a home that has a limited number of appliances such as simple TV set, main lights, refrigerator and sump pumps; all that you would need is a 5-kilowatt portable generator.

Electric Hazards: Preventing The Ouch



Modern man is in need of electricity, this is no secret. Whether he is at home or working, electrical power is essential to his existence. Yet with the use of this great power comes electric hazards. Many have only realized electrical power as a force to reckon with once they start encountering hazards. If this is so dangerous, what then would happen to people who need to work constantly with the dangerous electrical currents?

Engineers, electronic technicians, electricians and power line workers all need to work directly with electricity. To handle their jobs safely, it is important to understand how it behaves, how it can be directed, and what hazards it can bring about. The simple operation of an electric switch can be considered dangerous where water or any other conductor gets involved.

Electrical resistance is gauged in ohms. There are three determining factors which are –

  • The nature of the substance
  • The length of the substance (size of the cross-sectional area)
  • The substance temperature

A few substances like metals offer the lowest resistance to electrical current. These are called conductors. Other stuff such as pottery, dry wood and plastic offer high resistance, on the other hand. In fact, things that have the highest resistance to electricity can be used to prevent electrocution. They are what’s known as insulators.

Some of the insulators can also serve as conductors when saturated with water. This is the case with wet wood with its resistance dropping to the lowest point and it readily becomes a conductor. This is also the case with the human skin.

Human skin can be fairly resistant to electric current when it is dry but when it is moist, its resistance can radically drop. Pure water is considered a poor conductor but the smallest amounts of impurities like acid and salt can make it a ready conductor. Wherever water is present on the skin or in the environment, expect electricity to be conducted.

Electric Shock

Electricity can travel only in closed circuits. Electric shocks occur when the human body becomes a component of the electric circuit. The current enters the body at one point and leaves at another.

There are three factors that affect the severity of the electric shock. The first is the amount of current that is flowing, the path of the current passing through the human body, and lastly, the length of time that the body has been exposed to the circuit.

Burns and Injuries

The most common electric hazards include burns and other electrical accidents. Kinds of burns include electrical burns, thermal contact burns and arc burns.

Tissues or bones that became conductors of electricity are what’s known as electrical burns. The tissue damage is brought about by the heat that was generated.

Thermal contact burns occur when the skin comes in contact with overheated conduits, conductors, and any energized equipment. Flash or arc burns occur when high temperatures are produced by an arcing or explosion.

Prevention Is Key

Electrical accidents can be prevented by safe work practices and some protective devices. The use of insulation, for instance, makes man highly resistant to electric current. Use mica, glass, rubber or plastic when handling or whenever near electricity.

Guarding is yet another way to keep hazards at bay. Live parts of electrical equipment that operate at 50 or more volts have to be placed in enclosures or handled by qualified professionals. Partitions may also be used in the absence of enclosure units. Elevation can also keep your loved ones from being electrocuted (especially in the case of younger children).

Grounding

Protect your loved ones or employees from electric shocks by grounding an electrical system or tool. When this is done, a low-resistance path is created to the earth. When done professionally, this can prevent voltage buildup.

Safe Work Practices

Of course, nothing prevents electric hazards better than being knowledgeable of safety procedures whether at work or at home. Training can ensure that safe work practices are correctly implemented.

Sunday, May 18, 2014

Safety Switch - A Device For Every Power Tool User



Picture a table saw and how quick and powerful it actually is. If you have used this tool in the past, then you probably know how strong it is and how, at the same time, it can be dangerous. It is because of this risk that a safety switch should be used when one uses such a powerful tool.

Problems arise once a power tool user fails to keep his eyes on the board. The table saw (and other such dangerous tools) should be controlled at all times. Minus a perfect control, then you end up with an erroneous cut on the wood or worse, cutting up your hand. Since the switch is located at the side, you will notice that there will always be a split second gap right before the power saw is completely turned off.

There are now many people who have realized the savings that they can have if they learn to prioritize safety in the workplace. If you believe in safety for both your body and your project, then you need an accessory that may be small but it can help you power off your table saw easily.

It is advisable that you invest in safety switches that you can use to power on or off with a single flick. Just give this switch a touch and your table saw should stop rotating almost immediately as the electrical supply is cut. All this happens without you running off to a different direction as the saw dangerously runs on.

How the Safety Switch Works

Safety switches monitor electrical flow within a circuit. It shuts off or trips whenever current escapes from the electrical system. These devices are designed to protect people from power surges, faulty appliances and even damaged wiring. Every premise or home has a switchboard that comes with a main switch. Along with this is a wide array of circuit breaker switches that are often located right behind a cover in a centralized place.

Switches are generally associated with such switchboards although it must never be confused with other kinds of switches. They differ from these switches since circuit breakers are utilized to protect appliances from power surges while safety switches are manufactured to protect people from getting electrocuted.

Apart from installing this kind of switch when working with powerful, bulky tools, it is also important to remember these safety guidelines –

  • Only a licensed electrician should be allowed to work with electrical projects.
  • It is never safe to overload power points whether at home or in commercial places.
  • Ensure that your place is safe against electrocution and shocks especially when you have elderly or younger people at home.
  • Never mix appliances with water.
  • Have your electrical appliances regularly checked and maintained by an electrician.
  • Have your wiring system frequently checked by an electrician.

Three Types of Residual Current Device

Although safety switches are often referred to as such, they are also known as residual current devices. There are three kinds of such switches –

  • The switchboard-mounted switches 
  • The power point safety switches
  • Portable switches

The switchboard-mounted type is, as its name suggests, installed to a switchboard. They are used to protect selected circuits and appliances that are plugged into them. The second type is the kind that was installed in many older homes. Such switches were attached instead to an outlet and it protects appliances that are plugged into it. To ensure safety, a power point switches must only be installed on the primary power point right after the circuit board. These are often used in higher risk areas such as the bathroom or workshops.

The last type or portable switches are devices that are crucial for those who need to transport their power tools. These act like extension cords as they attach to the power point while offering a female opening on the other end.

Safety must always be observed in any environment that uses power tools. Nothing could be riskier than invisible electricity so always practice precaution. Have a safety switch eliminate such dangers in your home.

Friday, February 14, 2014

Electrician Installed Holiday Lights: When Safety Is Your Chief Concern



Each year, more and more Americans are celebrating the holiday season by adorning their homes with magnificent light displays. If this is also something that you want to consider, then you might want to call a competent electrician to help you with the installation of the lights. There are so many things that can keep you busy this year and your electrician is sure to make your life a lot easier.

In the past years, there have been a lot of innovations in lighting which your electrician is fully aware of. You might not know all of the latest designs and features so you definitely need a professional to help you with this aspect of your holiday design.

Outdoor Light Choices

Before you start calling an electrician and discussing your garden theme and all, you need to learn about a few fundamental outdoor lighting fixtures.

Uplighting are lighting fixtures that provide upward light. These are usually situated right below an object, meaning, the illumination comes from the bottom. This is often placed below plants and rocks.

Downlighting, on the other hand, is hung at a high level so that it can illuminate a huge area. The tendency of this type of light is to cast a downward illumination on passages, gardens, porches or a pathway.

Yet another outdoor lighting type is the area lighting. This has a bit of a classy effect since it can highlight a tree or any interesting focal point in a garden. It can also cast illumination on an interesting wall. This can also be used in lighting the entrance gate or merely for decoration purposes.

Moonlighting can create special lighting effects. This is actually a combination of uplighting and downlighting and is usually placed high above trees to create beautiful shadow patterns.

The Importance of Outdoor Holiday Lighting

Outdoor lighting, more often than not, is ignored by a lot of homeowners. This should not be the case whether the lights are going to be installed at the deck, porch area or the garden. When executed with taste, this type of lighting can create a wonderful impression on your home. Remember that your visitors are sure to notice the illuminated outdoors before they are even welcomed into the living room so make it a point to beautify the outer area.

Your ideas will also differ with regard to your lighting intentions. Are you going to use the holiday lights for parties? Or are you going to use them nightly as fun outdoor lights?

Snowflake lighting: Does the Winter Wonderland theme catch your fancy? Snowflake lights can be installed by an electrician as a single-colored theme or it can be a multitude of blue snowflakes which you can use all over your landscaped gardens.

Bubble lights: These used to be unsafe back in mid 20th century but now electricians are excitedly installing them once more. The newest versions are now safe and a lot more beautiful. These are truly a great way to make a Christmas statement this season!

Icicle lights: Just as their name implies, icicle lights are illuminated icicles which are hung all around homes, right from the gutter. Using these beautiful lights will provide a dazzling night scene for the homeowners as well as visitors and spectators.

Fiber optic lights: These create a more dramatic effect as they can change colors and blend well with any theme that you have concocted for your outdoors.

Incandescent lights: Who can forget about these Thomas Alba Edison inventions? An electrician can have them safely installed on trees or bushes – don’t even think about installing them on your own due to safety reasons.

LED lights: These lights are the latest craze as they offer long-lasting, economical lighting. ‘A better news? They are so affordable that you can have them installed all around your home!