Cut Sheet

Lighting
Lighting: EncLosEd and gaskEtEd — arEa — FLuorEscEnt
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© January 2011
1059
Lamp
Watts
Ambient
Temp
(°F/°C) ➊
Class I, Division 2
Class II, Division 1
Groups E, F and G ➋
Simultaneous Exposure
(Class I, Div 2 and Class II, Division 1)
Globe
Globe &
Reflector
Glass
Refractor
Polymeric
Refractor Globe
Globe &
Reflector
Glass
Refractor
Polymeric
Refractor Globe
Globe &
Reflector
Glass
Refractor
Polymeric
Refractor
26 104/40 T3 T3 T3 — T5 T5 T5 T6 T3 T3 T3 —
32 104/40 T3 T3 T3 — T5 T5 T5 T6 T3 T3 T3 —
42 104/40 T3 T3 T3 — T5 T5 T5 T6 T3 T3 T3 —
52 104/40 T2D T2D T3 — T4A T4A T4A T6 T2C T2C T2C —
52 151/55 T2C T2C T2C — T4 T4 T4 — T2C T2C T2C —
57V
104/40 T2D T2D T3 — T4A T4A T4A T6 — — — —
64 104/40 T2D T2D T3 — T4A T4A T4A T6 T2C T2C T2C —
64 151/55 T2C T2C T2C — T4 T4 T4 — — — — —
84 104/40 T2C T2C T2D — T3C T3C T3C T6 T2B T2B T2B —
114V
104/40 T2C T2C T2D — T3C T3C T3C T6 — — — —
“T” Numbers Represent the Maximum Lamp Temperature for Class I, Division 2 Locations and
Maximum Surface Temperature Under Dust Blanket for Class II, Division 1 Locations.
“T” Number T1 350 325 T2 T2A T2B T2C T2D T3 T3A T3B T3C T4 T4A T5 T6
Temp. Range (˚ºF)
664-
842
619-
662
574-
617
538-
572
502-
536
448-
500
421-
446
394-
419
358-
392
331-
356
322-
329
277-
320
250-
275
214-
248
187-
212
185
Temp. Range (°C)
351-
450
326-
350
301-
325
281-
300
261-
280
231-
260
216-
230
201-
215
181-
200
166-
180
161-
165
136-
160
121-
135
101-
120
86-
100
85
Mercmaster
™
III Low Profile Compact Fluorescent Luminaire Thermal Performance
Class I, Division 2; Class II, Division 1; Simultaneous Exposure to Hazardous Conditions
Temperature identification numbers of Mercmaster III Low Profile Fluorescent Fixtures
Class I, Division 2, Groups A, B, C, D
Class I, Zone 2, AEx nA nR IIC (Z2)
Class I, Zone 2, Ex nR IIC (Z) V
Class II, Division 1 and 2, Groups E, F, G
Class III
Simultaneous Exposure (Class I, Division 2/
Class II, Division 1)
Fixtures Outside Type (Salt Water)
Type 4X
IP66
Lamp
Watts
Supply Wire Temp.
(°F/°C)
Ambient Temp.
(°F/°C)
Class I, Zone 2, AEx nA nR — Ex nR
Globe Globe & Reflector Refractor
26 167/75 104/40 T5 T5 T6
32 167/75 104/40 T5 T5 T6
42 167/75 104/40 T5 T5 T6
52 167/75 104/40 T5 T5 T6
52 167/75 131/55 T4 T4 T4
57V 167/75 104/40 T6 T6 T6
64 167/75 104/40 T5 T5 T6
64 167/75 131/55 T4 T4 T4
84 167/75 104/40 T5 T5 T6
114V 167/75 104/40 T6 T6 T6
“T” Numbers Represent the Maximum Surface Temperature for Luminaries with AEx nA nR Rating
“T”
Number T1 T2 T3 T4 T5 T6
Temperature
Range (˚ºF)
574-842 394-572 277-392 214-275 187-212 185
Temperature
Range (°C)
301-450 201-300 136-200 101-135 86-100 85
➊Use 167 °F/75 °C rated supply wire.
➋ Fixtures with Polymeric Refractor are listed for Groups F and G only.
V CSA Certication only.