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    ELECTRIC PLUG
    November 8, 1904 - U.S.A.

    The first U.S. patent for a separable electric attachment plug was issued to inventor and manufacturer Harvey Hubbell of Bridgeport, Connecticut (No. 774,250). One part adapted the Edison screw socket to provide its own double-slotted receptable now familiar throughout North America. Into it, a separate double flat-prong plug could be slipped. This solved the problem of twisted wires caused with a screw connection. Small slots reduced the chance of a dangerous shock. Thus, with a two-prong plug on any electric device, "œelectrical power in buildings may be utilized by persons having no electrical knowledge or skill." On 11 Aug 1896 he had patented the pull-chain switch light socket (No. 565541). His manufacturing company, Harvey Hubbell Inc. exists today.

    FIRST MUSLIM CONGRESSMAN ELECTED
    November 8, 2006 - U.S.A.

    Keith Ellison, a Democrat, has become the first Muslim to be elected to the US Congress by winning a Minnesota seat in the House of Representatives. He reached this political milestone by defeating two other candidates in Minnesota's 5th Congressional District, which covers the Minneapolis area. Ellison won 56% of the vote, defeating Republican Alan Fine and the Independence Party's Tammy Lee, both of whom garnered 21% of the vote. A Green Party candidate received 2 percent.

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  • A Change is Gonna Come
    by Meredith Grey

    "...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."
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    by Immanuel Kant

    "...Rules for Happiness: Something to do, Someone to love, Something to hope for...."

RANDOM FACTS

  • More vehicles
    about Stolen On New Year's

    More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?) Harvard Medical School
    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

How To Use A Transfer Switch :

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ARTICLE INFORMATION :

Bring to an end your electric power problems. Use an automatic transfer switch to prevent power surges and blackouts. Your home appliances will be safe with this switch. It safely transfers electric power to the back up unit.

ARTICLE CONTENT :

An Automatic Transfer Switch is an automatic transfer of power source from one to another, this type of switches is more convenient compare to the manual type. An electrical transfer switch is very useful nowadays, because when the main power source is disconnected, it will automatically transfer the power to another electric system.

Electrical transfer switches can be use also when there are changes in voltage power supply. If the voltage power supply changed, it can cause damage to the internal circuit of your appliances at home or at the office.

Transfer switches will initiate the transfer of power to a generator or back-up power source until the voltage becomes stable again. A transfer switch is also called ?Generator Transfer Switches?.

An automatic transfer switch has additional circuit component, which is normally in a form of computer in which the incoming power is being monitor. It monitors the circuit for voltage sags, power surges, power spikes, or brownouts. It also actively initiates action in case there is a complete power loss. When the problem is being detected, the automatic transfer switch begins to start up the emergency power supply.

When the emergency power supply achieved the appropriate level of voltage, the automatic transfer switches will transmit power from the main source to the emergency power supply. While the emergency power supply as the active source of power, continues to monitor the main power supply. Once the main power source becomes stable for a specific period of time, the automatic transfer switch will transmit the power back to the main power supply.

Automatic Transfer Switch, according to the expert in power source is the safe way in connecting electrical load to the power generator as your back up electrical source. If you have installed an electric generator into your power system without an automatic transfer switch, it could break your power generator and everything in the circuit.

There are three methods used by electrical transfer switches in transferring electrical power source. These are break before make, closed transition transfer switch, and soft loading transfer switch. In the break before make method, the transfer switch breaks the contact from one power source before it switches to the other power source.

If there is a small or large switch breakage, break before make method prevents from back feeding of the emergency generator into the electric power line. The Closed Transition Transfer Switch method enables the generator to hold the load while the power supply remains uninterrupted. This method is common in industrial and commercial applications that are using automatic transfer switch system.

The Soft Loading Transfer Switch used the Closed Transition Transfer switch except the amount of load accepted by the generator in constant changed, as the power source is switched. This is the dynamic version of the closed transition switch and is compatible with the automatic transfer switch.

ARTICLE SPONSOR :

  • Relectric
    An Automatic Transfer Switch is an automatic transfer of power source from one to another, this type of switches is more convenient compare to the manual type.

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  • 4179Article ID :
  • Rudy SilvaOwner :
  • Free Articles / LifetimeArticle Type
  • November 30, 2014Date Added :
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