Over the past few weeks we’ve taught you about need-to-know lighting definitions, such as downlight, floodlight, louver and many others. This week we’re going to continue on our bright journey and teach you about lighting terms M through P.
Motion Detector - A control that uses passive infrared or ultrasonic detection to sense when someone is moving around the light or not, and to turn the light on when someone is. Motion lights are often used outdoors, to illuminate porches and driveways.
MR Lamp – A multi-facet reflector lamp, such as a MR16, which surrounds a halogen capsule.
National Electrical Code – The organization that sets the standards for wiring electrical fixtures and devices.
NEMA – The National Electrical Manufacturers Association.
Nominal Watts – The power rating of a lamp, which is designated by the lamp’s manufacturer.
Outdoor Lighting – A hard-wired, low-voltage, or solar powered lighting system that is used outdoors, usually to brighten a porch, deck, walkway, garage, etc.
Outlet Box – Often called a junction box, this is an enclosure that protects wires and supports surface light fixtures.
Over Voltage – When an incandescent lamp is operated above its recommended voltage it has a shorter life.
Photocell – Light-sensitive fixtures and devices, which operate according to the amount of daylight available at a certain time.
Photometric Report – A report that explains the output characteristics of a lighting fixture or luminaire
Power Feed – The point that connects electricity to track lighting and other types of lights.
Are there any lighting terms that you’d like us to define? Challenge us and let us know with a comment. Please join us next week, as we continue our bright lessons in lighting.