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Phosware 100 Refractor Lanterns
For Group "B" Street Lighting
Phosware P.100 Open Type
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Phosware P.101 Enclosed Type
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The Phosware P.100 lantern is for side street lighting and is supplied as an Open or Enclosed type and is suitable for 100-150W. tungsten
or 80 W. MB/U or MBF/U mercury lamps.
The Hood is of cast aluminium-alloy to which is fitted by means of 3 spring loaded hooks, a single piece prismatic
refractor giving a two-way non-axial light distribution.
The porcelain lamp holder is carried on a bridge attached by bayonet fixing to bosses cast in the body to suit the lamp size used.
The Phosware P.100 type can also be supplied as a toally enclosed lantern by fitting with a Perspex bowl and listed under P.101.
A lug is cast on the flange of the hood and a cast aluminium hinge piece is fixed to the Perspex flang of the bowl which
forms a hinge for interior access.
The Perspex flange is also fitted with a captive milled head screw and is sealed to the hood with a cork gasket.
This arrangement forms an inexpensive enclosed lantern for residential lighting with all the advantages of efficient light control
frm the prismatic refractor and protection from wanton breakages and dirt collection.
Finish of lantern: Outside. Hammered Metallic Beige: Inside. White enamelled.
| P.100 |
Open |
100-150 GLS or
80 MB/U or MBU/F |
9¼ |
8 |
4 lbs. 8 oz. |
¾" or 1" BSP |
| P.101 |
Enclosed |
9¼ |
11 |
5 lbs. 1 oz. |
Polar Distribution Curves Of Phosware P.100 Lantern
Phosware P.100 with 150W Tunsten Lamp.
To obtain Candle-power for 100 Watt lamp multiply readings by .575
Phsoware P.100 with 80 Watt MB/U mercury lamp.
| Initial Lamp lumens |
1200 |
2090 |
3000 |
3000 |
| Average output throughout life |
1160 |
1970 |
2350 |
2350 |
| Average output of lantern throughout life of lamp |
930 |
1670 |
1860 |
1860 |
| Light output ratio |
80% |
80% |
80% |
80% |
| Proportion in lower hemisphere |
89% |
89% |
86% |
86% |
| Directional intensity ratio |
2 |
2 |
3.5 |
3.5 |
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