A lighting layout guide for classrooms using 2' x 4' high performance lensed luminaires with T8 32W lamps, covering design, installation, and energy codes.
This document serves as a lighting layout guide for a typical classroom space with a 9-foot high ceiling. It recommends installing 2' x 4' high performance lensed luminaires equipped with high efficiency electronic ballasts and two T8 32W high performance lamps. This configuration aims to provide high quality, even lighting that meets recognized standards and local energy codes while effectively illuminating vertical surfaces and desk tops.
| Dimensions | 24" x 48" |
|---|---|
| Optics | Diffuse Acrylic Lens |
| Lamps | (2) F32T8 HP |
| Color Temperature | 3500K |
| Lumens per Lamp | 3100 |
| Ballast Factor | 1.0 |
| Luminaire Efficiency | 78% |
| Watts | 64 |
| Number of Luminaires | 9 |
| Luminaire Spacing | 8' x 10' on center |
| Mounting Condition | Recessed |
| Mounting Height | 9' |
| Average Illumination | ~43 fc (30" AFF) |
The recommended spacing is 8' x 10' on center.
The target is 35+ average maintained footcandles (fc).
Nine luminaires are required for the example room.
A contrast ratio of 7 to 1 or less is desirable.