About Light Appearance
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About Brightness
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Bi-Pin Base Tubular Light Bulbs
Brightness is measured in lumens; the higher the lumens, the brighter the bulb. Color rendering index (CRI) is a measurement on a scale of 0-100 of how accurately the light from a bulb represents an object's true colors; the higher the number, the more natural the colors appear. Any CRI value over 80 will show colors true to life. Bulbs with a warm light appearance have yellow tones. Bulbs with a neutral light appearance are often used in workspaces. Bulbs with a cool or daylight appearance have white/blue tones and are good for inspecting. A bulb’s estimated yearly cost is based on 3 hours of usage per day at $0.11 per kWh.
LED bulbs last longer and are more efficient than fluorescent bulbs. They generate little heat and withstand vibration. Ballast bypass bulbs eliminate the need for a ballast so the socket must be wired directly to the power source.
Plastic-coated glass bulbs are shatter resistant; the coating retains glass shards if they break.
| O'all Lg. | Equiv. Fluorescent Bulb Wattage | Light Appearance | Brightness, lumens | CRI | Light Setting | Bulb Material | Light Technology | LED Installation Type | Wattage | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Pkg. Qty. | Pkg. | |
T8 Bulb (1" Dia.) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 36" | 25W | Neutral (4,000K) | 1,450 | 82 | Not Dimmable | Glass | LED | Ballast Bypass | 12W | 50,000 | 1.45 | 6 | 0000000 | 000000 |
| 36" | 25W | Cool (4,100K) | 1,450 | 80 | Not Dimmable | Plastic-Coated Glass | LED | Ballast Bypass | 12W | 50,000 | 1.45 | 25 | 0000000 | 000000 |
| 36" | 25W | Cool (5,000K) | 1,450 | 80 | Not Dimmable | Plastic-Coated Glass | LED | Ballast Bypass | 12W | 50,000 | 1.45 | 25 | 0000000 | 000000 |
| 36" | 25W | Cool (5,000K) | 1,450 | 82 | Not Dimmable | Glass | LED | Ballast Bypass | 12W | 50,000 | 1.45 | 6 | 0000000 | 00000 |
Contact-Lug Base Vehicle Headlamp Light Bulbs
Brightness is measured in lumens; the higher the lumens, the brighter the bulb.
| Bulb Trade Number | Voltage | Wattage | Light Appearance | Brightness, lumens | Light Technology | Light Setting | Bulb Material | Color | No. of Contact Lugs | Rated Life, hrs. | Bulb Dia. | O'all Lg. | Bulb Shape No. | Each | ||
| C | H3 55W | 12V AC/12V DC | 55W | Warm (2,800K) | 1,450 | Halogen | Not Dimmable | Glass | Clear | 1 | 400 | 7/16" | 1 5/8" | T3 1/4 | 0000000 | 00000 |
| C | H3 55W HD | 12V AC/12V DC | 55W | Warm (2,800K) | 1,450 | Halogen | Not Dimmable | Glass | Clear | 1 | 400 | 7/16" | 1 5/8" | T3 1/2 | 00000000 | 0000 |
| D | H3C 55W | 12V AC/12V DC | 55W | Warm (2,800K) | 1,450 | Halogen | Not Dimmable | Glass | Clear | 2 | 400 | 7/16" | 2 11/16" | T3 1/4 | 00000000 | 0000 |
Four-Pin Wedge Base Plug-In Compact Light Bulbs
Often used in task lights, these bulbs are comparable to PL, Dulux, and Biax bulbs. Brightness is measured in lumens; the higher the lumens, the brighter the bulb. Bulbs with a warm light appearance have yellow tones. Bulbs with a neutral light appearance are often used in workspaces. Bulbs with a cool light appearance have white/blue tones and are good for inspecting. A bulb’s estimated yearly cost is based on 3 hours of usage per day at $0.11 per kWh.
LED bulbs last longer and are more efficient than CFL bulbs. They generate little heat, withstand vibration, and are shatterproof. LED bulbs are socket ready. They plug directly into a fixture and work with most electronic ballasts, but not all. Their bases are designed to fit multiple sockets.
| Equiv. Fluorescent Bulb Wattage | Light Appearance | Brightness, lumens | Light Setting | Light Technology | Bulb Material | O'all Lg. | Wattage | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Pkg. Qty. | Pkg. | |
Horizontal Operating Position | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 32W | Neutral (4,000K) | 1,450 | Dimmable | LED | Plastic | 6 1/2" | 12W | 50,000 | 1.45 | 1 | 0000000 | 000000 |
Base Up Operating Position | ||||||||||||
| 32W | Neutral (3,500K) | 1,450 | Dimmable | LED | Plastic | 4 15/16" | 12W | 50,000 | 1.45 | 1 | 0000000 | 00000 |