Some lampholders may require up to IP68 protection grading. Usually lampholder are required to meet IEC (International Electrotechnical Commission standard) security certification.
Lampholder Classification:
Typically, the name of a lampholder type is likely to be like this “letter(s) + number(s)”. A letter at the beginning often indicates the shape of the bulb, i.e. E for Edison, T for tubular, R for reflector.
E12, E14, E26, E27, E40 and other names with “E” at the begining are all Edison screw lampholders. Obviously, E represents Edison, the name of the great man who invented incandescent bulb. E27 is commonly used in residential lighting – incandescent light bulbs. E14 has a smaller size than E27, while E40 is larger than E27.
B22, with 2-pin screw, is another commonly used lampholder type for incandescent light bulbs.
GU lamps (e.g., GU10) is a daily use bayonet-type. GU: G type lamp holder, said plug-in, U said that U-shaped lamp part of the show, behind the numbers that light foot hole center distance (in “mm”) .
MR16, MR11 lamps. Begining with “MR”, followed by a number, this type of lamps are usually used as spot lighting for a small area. The lamps usually have two small pins. MR: Multiface Reflect, multi-faceted reflector (light cup), followed by numbers indicates the lamp cup diameter(unit is 1/8 inch). E.g., MR16′s diameter = 16 × 1/8 = 2 inches or = 50mm. The same calculation for MR11.
PAR lamps are generally PAR20 PAR30 PAR36 PAR46 PAR56, volume may be long or short, also known as down light, light beam, used to illuminate the stage, dynamic change color, are common fixtures on the stage, because the relatively large power consumption, but also grilled Feeling, now gradually being replaced by LED PAR lamps.Dimension is increasing as the number following “PAR” increases, i.e., PAR38 has a larger size than that of PAR30′s.
E27
MR16
GU10
PAR Lamps
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