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Light Bulb Glossary of Terms
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Operating Position
The
optimum position to obtain the best performance from a lamp:U=
universal, Hor=
horizontal, BD= base down, BU= base up, and BDTH= base down to
horizontal. Operating in other than specified
position
may inhibit performance or even create a hazard.

