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Fluorescent Reflector Lanterns
For Groups A and B Lighting
No. P.143
Phosware P143 and P145 Lanterns are totally enclosed side entry type for use with 2 or 3-80W 5 ft.
fluorescent lamps for Group A lighting.
The lantern is of remarkably good quality, very robust and designed on extremely good lines to match the graceful
shape of the Highway X Column.
The Hood which is 70 in. long x 15 in. wide is cast of aluminium-alloy in one piece and therefore forms a very strong support.
It is arranged for side entry mounting by means of 19 in. of 1½in. BSP plain tube.
To the Hood is hinged a heavy guage Perspex bowl of elegant shape which is opalised at each end, the remainder being clear.
THe hinged bowl is fitted on one side with three quick release Oddie catches.
The optical system consists of two high purity anodised aluminium reflectors of special design to control the maximum flux
from the two side lamps and a small reflector at the base for the lower lamp.
The reflector system is mounted on shaped castings which are tied by means of rods and hinged to the hood forming a complete
unit with the lamps.
The control gear which is a special instant start type is fitted on a separate tray screwed to the underside of the
hood so that the whole of the wiring including the lamp holders can be detached from the hood if required.
Standard Finish: Exterior, Hammered Metallic Beige; Interior, white enamelled.
| P143 |
3-80W |
19" of 1½" BSP Plain |
70 |
15 |
14 |
90 |
| P145 |
2-80W |
19" of 1½" BSP Plain |
70 |
15 |
14 |
90 |
Polar Distribution Curve Of P143 With 3-80W 5ft. MCF/U Lamps
Iso-Candle Distribution Curve Of P143 With 3-80W 5ft. MCF/U Lamps
Polar Distribution Curve Of P145 With 2-80W 5ft. MCF/U Lamps
Iso-Candle Distribution Curve Of P145 With 2-80W 5ft. MCF/U Lamps
| Average output of lamps throughout life |
12480 |
8320 |
| Average output of lantern throughout life of lamps |
9350 |
6240 |
| Light output ratio |
75% |
75% |
| Directional intensity ratio |
1.7 |
2.64 |
| Lumens L.H. per 100 ft. roadway at 120 ft. spacing |
7000 |
4160 |
P141 Fluorescent Lantern
For Group "B" Lighting
P141
Phosware P141 lantern is a totally enclosed Side Entry type for use with either 2-2ft. 40 Watt or 2-2 ft. 20 Watt
fluorescent lamps, for Group B lighting.
The lantern which is designed for 15 ft. mounting is admirably suited for mounting on a bracket having a 25o tilt.
The Hood is cast in aluminium-alloy with a hinged ring which carried a Perspex bowl with fluted ends, clear sides and a mottled
finish base. The bowl is fitted to the body casting with a substantial end hinge and a simple Oddie catch. The bowl is sealed to the
body with a felt gasket.
The lantern is arranged for side entry to take 1 inch B.S.P. plan tubes 5½ inches long and is fixed to the bracket
with heavy set screws.
The light control is by special high purity polished and anodised aluminium reflectors designed to give a wide lateral light
distribution in accordance with the B.S. Code of Practice for Group B roadways.
The reflector assembly incorporates the four Bi-pin lamp holders and consists of shaped castings which are hinged to the body and
form and enclosed compartment in which the Control Gear is housed.
The complete lantern has clean lines is robust in construction and easily accessible for maintenance. Finish: White interior and
Hammered Metallic Beige exterior.
As standard these lanterns are supplied wired complete with instant start Control Gear.
| P141 |
2-40W or 2-20W |
1" B.S.P plain |
31 1/8 |
12 ¼ |
9 5/8 |
23 |
31 |
Polar Distribution Curves Of P141 With 2-40W 2ft. MCF/U Lamps
Iso-Diagram Of P141 With 2-40W 2ft. MCF/U Lamps
| Average output of lamps throughout life (2) |
2640 |
| Average output of lantern throughout life of lamps |
2245 |
| Lumens in Lower Hemisphere |
1680 |
| Directional intensity ratio |
2.1 |
| Lumens per 100 ft. or road at 120 ft. spacing |
1870 |
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