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The Shrinking Fluorescent

The Shrinking Fluorescent. T12: 12/8". T8: 8/8". T5: 5/8". Lamp Physics. T8. T5 Smaller diameter lamp has less surface area than T8. T5 ....2*pi*r*h = 2 * 3.14 * .313" * 44.25 = 87 sq in Dissipate 238 watts in 4 lamps. T8 ....2*pi*r*h = 2 * 3.14 * .50" * 46.25 = 145 sq in

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The Shrinking Fluorescent

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  1. The Shrinking Fluorescent T12: 12/8" T8: 8/8" T5: 5/8"

  2. Lamp Physics T8 T5 Smaller diameter lamp has less surface area than T8. T5....2*pi*r*h = 2 * 3.14 * .313" * 44.25 = 87 sq in Dissipate 238 watts in 4 lamps. T8....2*pi*r*h = 2 * 3.14 * .50" * 46.25 = 145 sq in Dissipates 225 watts in 6 lamps, therefore operates cooler. T5 T5 is 5/8 inches wide 2” shorter T8 is 8/8ths or 1 inch wide MJS

  3. Optimal Lamp Performance

  4. T5 vs. T8 Luminaires Reduced Material Costs — Superior Optical Control T8 Fixture T5 Fixture

  5. T5 Applications — General • Indirect Suspended Fixtures • Direct/Indirect Lay-in Fixtures • Smaller Design Alternative to 2’ x 4’ Parabolic Direct Fixtures:3” or 6” Wide by 2’, 3’, 4’ or 5’ Long • Retrofit Kit for Existing 2’ x 4’ Parabolic • High bay lighting - replacing HID.

  6. Diameter Watts Lumens Lumens/Watt T5 28 2900 104 T8SPX 32 3050 95 T5/HO 54 5000 93 T8SP 32 2850 89 CW/WM 34 2650 78 CW40 3050 66 Lamp Efficacy vs. Diameter

  7. F32T8 / 25 Watt Lamps ULTRA 25 Watt 4’ T8 LOW WATTAGE SYSTEMS What Is It? GE now offers a 25W 4’ T8 lamp for customers who need to create the lowest wattage system with 4’ T8 lamps. The 25W lamp provides lower system lumen output than other 4’ T8 lamps, but this is an acceptable compromise for applications where lumen output is not critical or where energy savings is more important. • Product Features: • Reduce energy costs over 43% vs T12 • Reduce energy costs over 18% vs T8 • TCLP compliant • 25 Watts • 2400 initial lumens • Rated Life: • 36,000 hrs / 40,000 hrs IS 3hr / 12hr • 40,000 hrs / 46,000 hrs PRS 3hr / 12hr PC Description 72128 F32T8/25W/SPX30/ECO 72129 F32T8/25W/SPX35/ECO 72130 F32T8/25W/SPX41/ECO 72131 F32T8/25W/SPX50/ECO

  8. 1. Key Messages and Benefit Comparisons • a. F28 vs. F25 W • Shows the lamp that provides the highest lumens per watt without significant lumen sacrifice… …the GE F28T8 GE GE GE GE • GE • F32T8/25W • 25 • 2400 • 2280 • 96 • 85 • 20000 • 25000 • F34SP35/WM • 34 • 2750 • 2475 • 81 • 72 • 20000 • F32T8/SP • 32 • 2800 • 2660 • 88 • 78 • 20000 • 24000 • F32T8/WM/XL • 30 • 2800 • 2625 • 93 • 83 • 24000 • 29000 • F28T8 • 28 • 2750 • 2585 • 98 • 85 • 18000 • 24000 • Description • Watts • Initial Lumens • Mean Lumens (Design) • Lumens Per Watt (LPW) • CRI • Life @ 3hrs/start • Life @ 12hrs/start *Specifications from online catalogs 4/2005

  9. 1. Key Messages and Benefit Comparisons • a. F28 vs. F25 Life@12 hrs/start: -14% vs. GE XL (SP/SPX, WM, HL) -31% vs. F32T8/SXL Initial Lumens: -13% vs. GE F28T8 -14% vs. F32T8 & WM -19% vs. F32T8/SPX 2900 Initial Lumen Comparison • F34SP35/WM • 34 • 2750 • 2475 • 72 • 20000 2800 2700 13% Less Light 2600 2500 2400 2300 2200 *Based on published nominal initial lamp lumen data 25w T8 34w T12 32w T8 30w XL 28w T8 T8

  10. T8 vs. T5 Ceiling Uniformity Comparisons Fixture Initial Maintained Ceiling Spacing Foot-candles Foot-candles Uniformity 10' 93 60 5.2:1 T8 12' 70 53 4.6:1 T5 15' 56 42 7.5:1 T5 *Note: IES recommends a max 8:1 ratio to meet RP1 *Note: Numbers based on T5 fixture: LDM1-1 and T8 fixture LSX-020941.

  11. T8 vs. T5 Ceiling Spacing Comparison LSX-020941 LDM1-1 T5 HO FIXTURES 15’ O.C. 144 LINEAR FEET 0.89 W/FT2 T8 FIXTURES 10’ O.C. 216 LINEAR FEET 1.32 W/FT2 Note: This comparison was made based on the performance of the fixtures listed above.

  12. UltraStartTM Ballast for T5 and T8 Fluorescent Lamps • Overview • What is it • Programmed Start electronic ballasts - PS • Extends lamp life in frequently switched applications • Ideal for occupancy sensors and daylight harvesting • Maintains lamp warranty • Who is the Target Audience • Retail • Industrial • Warehouse • Commercial

  13. Frequent Switching Effect • Maintain lamp life when customers are using automatic light controls • NEMA recommends PS in applications of 5 or more starts per day. • This was based on a 2004 recommendation acknowledging that Program Start ballast were not energy efficient and were series wired and slow start.

  14. Warranty for lamps on GE Electronic Ballast GE UltraMax or ProLine Instant-Start System on a burning cycle of 10 hours or more per start 10:00 UltraStart System with GE T5 or T8 lamp on a burning cycle of 15 minutes or more per start. 00:15 Occupancy Sensors equal GE UltraStart!

  15. UltraStartTM Ballast for T5 and T8 Fluorescent Lamps • Overview • Why? • Maintain lamp life when customers are using automatic light controls • NEMA recommends PS in applications of 5 or more starts per day • UltraStart is highly energy efficient and has the convenience of parallel start • Customers are more satisfied when lamp life is not compromised

  16. T5 LAMPS • SMALLER IN DIAMETER • SMALLER LUMINARES • GLARE ISSUE • ONLY INDIRECT FIXTURES • MORE EXPENSIVE LAMP • 2 LAMPS MORE THAN 3 T8s • MORE EXPENSIVE FIXTURE • MAY REDUCE FIXTURE # • COST IS COMING DOWN • MORE EXPENSIVE BALLAST • BEST PERFORMANCE 95 F • ALWAYS PROGRAMMED START T8 LAMPS MORE COMMON LESS WARM UP TIMIE MORE FIXTURE OPTIONS MORE BALLAST OPTIONS LESS EXPENSIVE TO MAINTAIN MORE RETROFIT OPTIONS BEST PERFORMANCE 77 F MORE MATERIAL=MORE WASTE MORE DIMMING OPTIONS

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