what is 'ballast' in electrical terms?
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Electrical ballast Ballasts limit the current through an electrical load. These are most often used when a load (such as an arc discharge) has its terminal voltage decline when current through the load increases.
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- PAVE™ will evaluate each presort product platform on its own merits and will issue a specific certification for that platform if warranted. Note: Participation in the PAVE™ program is voluntary. There are two types of certification.
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Fluorescent-lamp formats Typical diameters are T12 or T38 ( 11⁄2 in or 38 mm) for residential lamps with magnetic ballasts, T8 or T26 (1 in or 25 mm) for commercial energy-saving lamps with electronic ballasts, and T5 or T16 ( 5⁄8 in or 16 mm) for very small lamps, which may even operate from a battery-powered device.
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Perspectives In a ballasted roof, the stones are much larger—at least an inch in diameter—and applied much more heavily. In fact, the weight of the stone ballast is the only item holding the roof components in place. The weight can vary from 10 pounds per square foot (the minimum allowed by code) to 25 pounds or more. The most common assembly was a loose-laid EPDM membrane over a rigid insulation board.
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How to Replace the Ballast in a Fluorescent Lighting Fixture Take the ballast with you to your local home center or hardware store and purchase a like replacement. Note the number of tubes in your fixture and their wattage, length, type (T8, T12, T5, etc.).
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- Within a second the lamp would overheat and burn out. During lamp starting, the ballast must briefly supply high voltage to establish an arc between the two lamp electrodes. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output.
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5 Tricks to Fix Chattering, Buzzing and Flickering Lights THE QUICK FIX. The key mechanism on any fluorescent light is the ballast, a device that controls the current through the light. The ballast is easily replaced by removing the faceplate behind the light bulb and disconnecting the ballast body from the fixture's wires.
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- 400 Watt - Quantum Digital Ballast - Dimmable - Operates MH or HPS Lamps - 120/240 Volt. 1  Brand: Quantum. 2  MPN (Part No.): QT400. 3  Safety Rating: Not Applicable. 4  Bulbs Included: No. 5  Input Voltage: 120, 240.
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- The ABC's of electronic. fluorescent ballasts. A guide to fluorescent ballasts. 2 The ABC's of Electronic Fluorescent Ballasts. 100 years of brighter, more efficient lighting. The first fluorescent lamp was patented over 100 years. ago by American inventor, Peter Cooper Hewitt. Cooper Hewitt’s low pressure mercury arc lamp is the. direct parent of today’s modern fluorescent lights.
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Fluorescent Ballasts Fluorescent Ballasts. All gas discharge lamps, including fluorescent lamps, require a ballast to operate. The ballast provides a high initial voltage to initiate the discharge, then rapidly limits the lamp current to safely sustain the discharge.
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- A ballast provides. the starting voltage for a fluorescent lamp and limits. the current passing through it. The ballast also provides. proper electrode or filament heating. For most of the last century, electromagnetic ballasts, sometimes referred to as “core-and-coil” or “magnetic”.
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- Philips Bodine emergency ballasts may be used with either a switched or unswitched fixture. If a switched fixture is used, an unswitched hot lead must be connected to the emergency ballast. The emergency ballast must be fed from the same branch circuit as the AC ballast. Note: Illustration shows primary circuit only.
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- ballast - A device required by electric-discharge light sources such as fluorescent or HID lamps to regulate voltage and current supplied to the lamp during start and throughout operation.
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RESISTANCE ballast resistor, barretter, ballast-a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations). circuit, electric circuit, electrical circuit-an electrical device that provides a path for electrical current to flow.
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- ballast factor (BF) - The ratio of the light output of a fluorescent lamp or lamps operated on a ballast to the light output of the lamp(s) operated on a standard (reference) ballast. Ballast factor depends on both the ballast and the lamp type; a single ballast can have several ballast factors depending on lamp type.
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- One of the most intriguing aspects of Manitou Springs is the carbon dioxide content of the gas emanating at the springs. The gas, is composed almost entirely of carbon dioxide, a characteristic not typical of low-temperature aquifers.
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- Converting from a fixed output ballast to dimming with Mark 10 Powerline Ballast • Replace the ballast — simply wire the Philips Advance Mark 10 Powerline ballasts into the existing fixtures following the wiring diagrams (rapid start sockets are required, replace existing if necessary). • Replace the switch — the dimming control
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- Understanding Electronic Ballasts and LED Drivers and Their Impact on Photo Controls What are Electronic Ballasts? Ballasts limit the amount of current from supply line voltage, while maintaining the necessary electrical conditions for proper lamp start and operation. Ballasts vary in design complexity. Older, simplistic magnetic models minimally
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How to Replace Ballasts If a ballast is replaced with the exact same type of ballast, the wire colors usually match. If an old T12 lamp magnetic ballast is replaced with a newer T8 lamp and electronic ballast, the colors will probably not match.
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Support A fluorescent lamp-ballast circuit that utilizes continuous cathode heating, while the system is energized, to start and maintain lamp light output at efficient levels. Rapid start ballasts may be either electromagnetic, electronic or of hybrid designs.
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- Electronic ballasts and drivers. offer improved efficiency and control of LED, inductive and fluorescent lighting loads, but can also subject the associated lighting. controls to high inrush currents when switched. on, possibly causing damage or reducing the. life of the photo control.
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What is a ballast? When the right ballasts are used, the end result can mean a cost-effective lighting solution that is energy efficient and gives you advanced controls over the amount of light produced in your space. Let’s dig a little deeper.
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- Because LED Tube Lights do not require ballast like fluorescent tube lights, the ballast must be removed or bypassed by rewiring.epending on how much wire you have to work with, it is a good idea to leave long enough wires leading out of the ballast to be able to reconnect the ballast with wire nuts, if you should ever want to convert the fixture back to use for fluorescent bulbs or want to use the ballast somewhere else.
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- philips advance ballasts electronic ballast 2 lamp fluorescent lighting accessories parts 54 watt ballast electronic fluorescent light ballasts fluorescent ballast 18 watt ballast philips advance.
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- ElecPrg3.doc 6/15/09 Ballast Replacement Procedure Schedule shut down and Lockout/Tagout 1. Schedule shut down with customer. 2. Turn off power to the fixture. To see if ballast only needs to be rebooted turn power back on and check to see if light come on. If not turn back off. 3. Install a breaker lockout/tagout device, or switch lockout/tagout devices on all switches to the fixture you are working on.