General Lighting Tips >> Recessed Lighting

Recessed Lighting

General Lighting

General service "A" bulbs (in recessed fixtures) provide wide light distribution. "R" and "PAR" bulbs concentrate light. Coverage per fixture is based on providing 15 to 25 footcandles of light. In rooms with darker color use higher wattages.

Number of fixtures needed in a given area: consult our showroom experts for manufacturer's literature. The "spacing ratio" number must be multiplied by the fixture's mounting height above the lighted area (tabletop, floor, counter, etc.) to give the maximum spacing for even illuminations.

Fixture Trim	"A" Bulb			"R" Bulb
	75w	100w	150w	50w	75w	150w
CONE BAFFLE LENS DIFFUSER	25 20 25 20	40 30 35 30	50 50 55 45	15 10 -- --	30 25 -- --	65 60 -- --

Wall Washing

Use the chart to choose the desired light level. Find the spacing (S) for the fixtures. For the required number of fixtures, divide the length of wall by spacing (S). Place the fixtures the same distance from the wall as (S). Example: For Medium Light Level with wall washers with 100W "A" bulbs, five fixtures are needed to wash a 10-foot wall.

Lamp & Wattage	Spacing(s) for Medium Level (15-20 footcandles)	Spacing(s) for High Level (30-45 footcandles)
100W "A"	2 ft.	--
150W "A"	4 ft.	2 ft.
150W "R"	3 ft.	2 ft.

Accent Lighting

Use the chart to select a bulb for the size of beam desired to accent the subject. Light levels range from 20 to 60 foot-candles at the center of the beam. Example: A 2-foot. mounting distance, a 50W "MR-16FL" bulb will cast an 8 x 3-foot beam.

Lamps aimed 30 degrees from vertical. (L) & (W) indicate where candlepower drops 50% of maximum.
Distance from Wall (D)	Lamp Selection	Beam Length (L)	Beam Width (W)
2 Feet from Wall (8 ft. Ceiling)	50W PAR-36 WFL (12V)	5 ft.	2.5 ft.
	50W MR-16 FL (12V)	8 ft	3 ft.
	75W R-30 SP	4.5 ft.	2 ft.
	75W R-30 FL	Wall Bottom	7 ft.
3 Feet from Wall (10 ft. Ceiling)	75W PAR-38 FL	5.5 ft.	2 ft.
	25W PAR-36 NSP(12V)	2 ft.	1 ft.
	50W MR-16NSP (12V)	2 ft.	1.5 ft.
	50W MR-16 NFL (12V)	5.5ft.	3 ft.
	75W PAR-38 SP	3 ft.	1.5 ft.