Shapes & Systems (Prudential Lighting)

PHOTOMETRIC DATA

P-62-1-04-RS-PRA (1-Lamp)

COEFFICIENTS OF UTILIZATION
% CEILING REFLECTANCE	80			70			50
% WALL REFLECTANCE	70	50	30	70	50	30	50	30	10
ROOM CAVITY RATIO	FLOOR CAVITY REFLECTANCE, 20%
1	.62	.60	.58	.61	.59	.58	.56	.55	.55
2	.58	.54	.52	.56	.53	.51	.51	.50	.47
3	.53	.49	.46	.52	.49	.45	.47	.44	.42
4	.51	.45	.41	.49	.44	.40	.43	.39	.37
5	.47	.40	.36	.46	.40	.35	.39	.35	.32
6	.43	.37	.32	.42	.36	.32	.35	.31	.29
7	.40	.33	.29	.39	.33	.29	.32	.28	.25
8	.37	.30	.26	.36	.30	.25	.29	.25	.22
9	.34	.27	.23	.34	.27	.23	.26	.22	.20
10	.32	.25	.20	.31	.24	.20	.24	.20	.17

Efficiency = 56.7%

P-62-2-04-CT-PRA (2-Lamp)

COEFFICIENTS OF UTILIZATION
80			70			50
70	50	30	70	50	30	50	30	10
FLOOR CAVITY REFLECTANCE, 20%
.57	.57	.57	.55	.55	.55	.53	.53	.53
.53	.51	.50	.52	.50	.49	.48	.47	.46
.49	.46	.44	.48	.45	.43	.44	.42	.40
.46	.42	.38	.45	.41	.38	.40	.37	.35
.42	.38	.34	.41	.37	.34	.36	.33	.31
.39	.34	.31	.39	.34	.30	.33	.30	.27
.37	.31	.28	.36	.31	.27	.30	.27	.25
.34	.29	.25	.34	.28	.25	.28	.24	.22
.32	.26	.23	.31	.26	.23	.26	.22	.20
.30	.24	.21	.30	.24	.21	.24	.21	.18
.28	.23	.19	.28	.22	.19	.22	.19	.17

Efficiency = 56.2%

CEILING SYSTEMS (Specify Mounting Style)


X1 (T-bar)	X3B (Wood Joist)	X4B ("C" Channel)

INSTALLATION (X3B, X4B)

We reserve the right to change details of design, materials or finish in any way that will not alter appearance, reduce function or performance.

PRUDENTIAL LIGHTING 1774 East 21st Street, Los Angeles, CA 90058 213.746.0360 FAX: 213.746.8838

Shapes & systems - Page 40