Basic Electrical Installation Work

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Strana 390 z 399

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The unit mass is the kilogram (kg). Lamp lamp device for converting electrical energy into light energy. Lever lever any rigid body which pivots rotates about fixed axis ful- crum. Magnetic force Magnetic force the force created magnetic field. Isolation Isolation defined cutting off the electrical supply circuit item of equipment order ensure the safety those working the equip- ment making dead those parts which are live normal service. Luminaire luminaire equipment which supports electric lamp and distributes or filters the light created the lamp. Magnetic hysteresis Magnetic hysteresis loops describe the way which different materials respond being magnetized. Mechanics Mechanics the scientific study ‘machines’, where machine is defined device which transmits motion force from one place to another. Intrinsically safe circuit intrinsically safe circuit one which spark thermal effect is capable causing ignition given explosive atmosphere. Intruder alarm systems intruder alarm system serves deterrent potential thief and often reduces home insurance premiums. Magnesium oxide The conductors mineral insulated metal sheathed (MICC) cables are insulated with compressed magnesium oxide Magnetic field The region space through which the influence magnet can be detected called the magnetic field that magnet. Maintained emergency lighting maintained system the emergency lamps are continuously lit using the normal supply when this available, and change over alternative supply when the mains supply fails. . The mass body remains constant and can easily found comparing it on set balance scales with set standard masses. Mass Mass measure the amount material substance, such metal, plastic, wood, brick tissue, which collectively known body. Manual handling Manual handling lifting, transporting supporting loads hand by bodily force. Magnetic poles The places magnetic material where the lines flux are concentrated are called the magnetic poles. Job sheets job sheet job card carries information about job which needs be done, usually small job. Good insulating materials are PVC, rubber, glass and wood. Load force Distance from fulcrum Effort force Distance from fulcrum Levers and turning force lever allows heavy load lifted moved small effort.Glossary terms 379 electricity pass through it