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Some data projectors are large devices that attach to a ceiling or wall in an auditorium.
Raceway
An enclosed conduit that forms a physical pathway for electrical wiring, protecting wires and cables from damage and interference.
Ampacity
The maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration.
Circular Mils
A unit of area used specifically in the calculation of wire cross-sectional areas, defined as the area of a circle with a diameter of one mil (one-thousandth of an inch).
Diameter
A straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
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