A Series
Standard bulb for
everyday use
A19
A21
BR Series
Common bulb for
overhead can lights
BR30
BR40
Par series
Common bulb for
floodlights
PAR38
ED Series
Large bulbs for tall ceilings
and larger areas
ED28
ED37
BT Series/Corn Cob
Large bulbs for warehouses
and factories
BT56
Corn Cob
Linear Tubes
Linear lights for office
and residential ceilings
LED and
Fluorescent
Fluorescent
Only
Watts
Watts measure
energy consumption.
Lumens
Lumens measure visible light energy. The higher the lumens, the brighter the light.
LED Watts |
Incandescent Watts |
Lumens |
| 7-9 W | 60 W | 700-900 |
| 14-16 W | 100 W | 1,400-1,600 |
| Note: Watt-to-lumen ratio may vary depending on the bulb. | ||
Color temperature describes the hue and tone of white that a light bulb emits. It is measured numerically on the Kelvin degrees scale. The lower the Kelvin value of a bulb, the more orange the light will appear. The higher the Kelvin value, the bluer the light will appear.
| Color Temperature (Kelvin) |
2,700K – 3,500K | 3,600K – 4,900K | 5,000K – 6,500K |
|---|---|---|---|
| Light Appearance | Warm White | Cool White | Daylight |
| Ambience | Calming | Focus | Crisp, Invigorating |
| Application | Homes, Restaurants, Hospitality |
Retail, Office, Schools, Showrooms |
Warehouse, Manufacturing, Healthcare |
2,700 – 3,500K
3,600 – 4,900K
5,000 – 6,500K
The Color Rendering Index (CRI) measures how accurately a light bulb shows color as compared to natural light.
- It is a scale from 0–100% with 100% representing the most vivid, true-to-life color.
- Light bulbs with CRI ratings between 80–89 provide good color rendering.
- Light bulbs with CRI ratings of 90 or higher provide excellent color rendering and are suitable for use in photo studios and other color-critical applications.
≤ 79 CRI
80–89 CRI
≥ 90 CRI
LED
- Uses diodes powered by electricity to emit light
- Longer lifespan than traditional lighting
- More energy efficient
- Available in plastic or glass
Fluorescent
- Emits light through chemical reaction with electricity
- Shorter lifespan than LED
- Less energy efficient
- Only available in glass
- Ballast required
Type A – Plug-And-Play LED
- Do not require any rewiring since they operate with the fixture's existing ballast, so long as they are compatible with each other. (See Figure 1)
- NOTE: Not every plug-and-play bulb is compatible with every ballast, so it is important to confirm compatibility before replacing a fluorescent bulb with an LED bulb for energy and cost savings.
Type B – Ballast Bypass LED
- Ballast bypass is when you remove a ballast from the electrical circuit that goes to your light fixture upon initial installation.
- Since the ballast sits between the power source and the light fixture, this requires either removing the ballast completely or simply disconnecting the ballast and wiring the light fixture straight into the power source.
- Because the light bulb is powered directly by the power source, failure points are reduced and compatibility issues are eliminated. (See Figure 2)
