Phosware Enclosed Pendant Lanterns

For Group "B" Street Lighting

P 104 Perspex Bowl Type

P 132 Prismatic Bowl Type

Both types are suitable for the same range of lamps 100-200W GLS or 80-125W Mercury.

The Hood is of cast aluminium-alloy with a cast hinged ring which carries the bowl.

The interior of the hood is fitted with two downrods on which slides an adjustable cast bridge piece carrying the lampholder. This is common to both types.

With the P.104 a further 3-arm casting is fitted to the base of the hood to carry the two-way glass dome refractor and this is so arranged that it can only be placed in one position relative to the lantern, the hood being marked for the across road direction.

The dome refractor is held in its housing by 3 spring loaded hooks and is easily detachable for maintenance.

With the P.132 no internal refractor is necessary as the light control is effected by the prism construction of the bowl itself.

Standard Finish: Exterior, Hammered Metallic Beige; interior, white enammelled.

Light centre position, below top of glass refractor - P.104 Dome - 2 13/16", P.132 Bowl - 1 7/8"

List No.	Type	For Lamps Watts	Dimensions ins.		Weight lbs.	Boss Tapped
			Height	Diameter
P.104	Enclosed	100-200W GLS or 80-125W MB/U or 80-125W MBF/U	12½	10	6¾	¾ or 1" BSP
P.132			11 5/8	10	7½

Polar Distribution Curve OF Phosware P104 With 150W GLS Lamp Plotted To Lamp Output 2090 Lumens



Polar Distribution Curve OF Phosware P132 With 80W MB/U Mercury Lamp Plotted To Lamp Output 3000 Lumens

Lamp	100W	150W	200W	80W MB	125W MB
Initial Lamp lumens	1200	2090	2880	3000	5300
Average output throughout life	1160	1970	2725	2350	3900
Average output of lantern throughout life of lamp	870	1480	2040	1760	2920
Lumens per 100 ft. of road at 120 ft. spacing	725	1230	1700	1465	2430
Light output ratio	75%
Proportion in lower hemisphere	88%
Directional intensity ratio	1.9