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Picking Out the Perfect Light Fixture

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Incandescent Fixture

 

  • Styles vary widely, but the basic purpose is to hold an incandescent light bulb. Fixtures can be mounted on a stand, on the wall or on the ceiling.
  • The basic wall or ceiling fixture mounts onto an electrical box. The most common type of box contains a threaded stud (or threaded rod) that attaches to the fixture with a part called a hickey. Or, instead of a threaded stud, the fixture may use a crossbar hanger.
  • Various styles of lights can be used for four basic purposes: task lighting (to illuminate specific areas for activities such as reading or preparing food), ambient lighting (for general illumination of a room), accent lighting (focused, directional light generally on artwork or architectural features), and utility lighting (used to flood an area with light, often outdoors or in work areas).
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    Fluorescent Fixture

     

  • Used to house fluorescent lamps, and can be rectangular or round.
  • The rapid start type has a starter (a small aluminum barrel that is a type of automatic switch) and ballast in one piece and turns on the instant the switch is flipped.
  • The starter type has a small ballast and a starter and will flicker for a moment before turning fully on.
  • The instant type turns on after a momentary pause. Fluorescent lights are less expensive to operate than incandescent, and most of the parts are replaceable
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    Lamp

     

  • Provides localized light for specific activities such as reading, writing, sewing and food preparation.
  • The light should cover the entire task area and be located so shadows are reduced to a minimum.
  • Available in a wide variety of styles.
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    Track Lighting

     

  • A system of movable lights wired to a metal track that makes a great accent lighting choice for living rooms, bedrooms and dining rooms.
  • Available in many colors, sizes and shapes, is easy to install and flexible since the lights can be moved around and repositioned
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    Can Light

     

  • Also known as recessed lights.
  • Provides ambient lighting.
  • Ideal for rooms with low ceilings and can be used to supplement existing light in kitchens and bathrooms
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    Landscape Fixtures

     

  • Designed to accent or light steps and pathways. It also serves a decorative function and is relatively easy to install. Advise customers not to hook up landscape lighting with extension cords, which are for temporary use only.
  • Mushroom lights, named for their sloped shades, are commonly used along pathways or in gardens. The bulb ranges from 5 watts to 60 watts, and light is reflected downward to give a soft illumination to the immediate area near the fixture. Opaque, tiered lens attachments shield light from the eyes and direct it downward.
  • Bollard lights are cylindrical in shape, with the faceted lens being part of that cylinder. The lens diffuses light in a 360° pattern to create a soft glow. Lens shields can limit lighting to a 180° range.
  • Globe lights have spherical lenses, so they cast light in all directions, providing subtle illumination that can cover a large area without glare. They are often used around outdoor living areas.
  • Deck lights are designed to fit under steps, benches and railings. They can be mounted in many other ways as well. Many other kinds of fixtures can be recessed into steps or planters to directly illuminate pathways.
  • Landscape boulders blend naturally into the environment and glow from within, casting illumination for pathways. The faux boulders contain low-voltage lamps and UL-listed components that are easy to wire, can be installed on their own system or added to an existing low-voltage system.
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    Outdoor Fixtures

     

  • Primarily serve a security function, but there are a wide variety of systems, including: high–intensity discharge (HID) systems for mercury, metal halide and high–pressure sodium light sources; incandescent and tungsten halogen fixtures; low-voltage lighting systems; and incandescent or halogen PAR spotlights and floodlights.
  • HID lighting provides considerably greater illumination than other lighting commonly available. Its cost is also higher, although operating costs for lumens output is generally less.
  • Lumens are the measurement of light output.
  • Fixtures to be used outdoors must seal moisture and dust from wiring and switches. Fixtures with photocells provide automatic activation from dusk to dawn.
  • Spotlights or floodlights are used for security. They can also be used with a colored lend as decorative lighting. Weatherproof sockets are essential because the fixture is often mounted on the ground and pointed upward. Only install when the ground is completely dry.
  • Motion lights use sensors that activate the light when they detect heat and motion up to 40 feet away. They can attach to a power pack and mount on walls or fences 6 to 8 feet above the ground
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    Low Voltage Lights

     

  • Safe for many outdoor lighting applications. Because of the low voltage, users will not receive an electric shock even if they touch the bare wires or cut a buried cable with a garden tool. Consequently, these systems are harmless to children and pets and do not require cables to be buried.
  • A power pack is the heart of the low-voltage system and should be located outdoors by installing a weatherproof outlet cover to keep snow and rain out. Power packs typically range from 88-watt capacity up to 900-watt capacity.
  • May be one of several types. Bayonet base lamps feature a copper base that twists into the fixture socket, while the wedge base lamp plugs into the socket. Halogen lamps provide the most energy efficiency.
  • Remote photo control automatically turns lights on at dark and off during daylight hours.
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    Trouble Lights

     

  • Have a strict standard for safety. All lamps with metal guards must be permanently grounded to the guard. Some lamps have plastic guards that solve the grounding problem, reduce heat build-up and prevent scratching of painted surfaces.
  • Some models do not have built-in cords. These models attach to a user's extension cord and are easy to store and convenient to use. In all cases, handles must be tightly fitted to the cage and meet crush-resistance testing and heat-factor requirements.
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    Ballasts

     

  • Fluorescent lamps require special auxiliary equipment to provide reliable starting and to assure proper electrical operation. The principle function of the ballast is to hold operating current within proper limits and to provide enough voltage to start the lamp. Instant-start ballasts provide sufficient voltage to start fluorescent lamps without preheating and are commonly used with single-pin lamps and some special lamp types.
  • Rapid-start ballasts heat the cathodes continuously from a low-voltage transformer within the ballast. This is the most common type of ballast in use today for 40-watt lamps and for all lamps that use recessed double-contact bases.
  • Reduced wattage lamps operate on most existing ballasts, which can reduce wattage 14 to 20 percent. In addition, new ballasts developed to minimize the wattage consumed by the ballast itself further reduce electrical consumption.
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    Starter

     

  • A small silver-colored cylinder found mostly in older fluorescent lamps.
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  • Allows the electrodes to heat up prior to the lamp starting.
  • When the lamp in an older fluorescent begins to flicker, both the tube and the starter should be replaced.
  • Starterless operation is achieved with instant-start and rapid-start ballast designs.
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    Courtesy of NRHA.org

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