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Figure 17

(foster, 2013)

Table shows International Lamp Coding System (ILCOS) short form oding system for some lamp types

Type (code) Common ratings (watts) Colour rendering Colour temperature (K) Life (hours)

Compact fluorescent lamps (!) "#"" good 2,$00#",000 ",000#10,000

%igh&pressure mercury lamps (') 0#$"0 fair 3,300#3,00 20,000

%igh&pressure sodium lamps (!&) "0#1,000 poor to good 2,000#2,"00 *,000#2+,000

ncandescent lamps () "#"00 good 2,$00 1,000#3,000

nduction lamps (-) 23#" good 3,000#+,000 10,000#*0,000

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Low&pressure sodium lamps (L!) 2*#10 monochromatic yellow colour 1,00 1*,000

Low&.oltage tungsten halogen lamps(%!)

12#100 good 3,000 2,000#",000

/etal halide lamps (/&) 3"#2,000 good to ecellent 3,000#",000 *,000#20,000

Tuular fluorescent lamps () +#100 fair to good 2,$00#*,"00 10,000#1",000

Tungsten halogen lamps (%!) 100#2,000 good 3,000 2,000#+,000