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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.
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, clar 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 5 5/8 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
Grey exterior.
As standard these lanterns are supplied wired complete with instant start Control Gear.
| P141 |
F.2-40.H. |
2-40W or 2-20W |
1" B.S.P plain |
31 1/8 |
12 ¼ |
9 5/8 |
23 |
31 |
Polar Distribution Curves Of F2-40.H. With 2-40W 2 ft. MCF/U Lamps
The distribution courve is taken through the vertical at right angles to the axis of the lantern and is based on an average lamp
light output of 2320 lumens, from two-2 ft. MCF/U 40W fluorescent lamps.
| Light Output Ratio: 80% |
Directional Intensity Ratio: 2.2 |
Proportion of light in upper hemisphere: 25% |
Proportion of light in lower hemisphere: 75% |
Section at center line
Section at center line
P142 Fluorescent Lantern
Phosware P142 vertical type Post Top lantern is designed for use with 4-2 ft. 40 Watt or 4-2 ft. 20 Watt fluorescent tubular lamps.
It is for general lighting of an ornamental type, primarily for use on Housing Estates, wide residential roads, Parks, Esplanades and
similar situations.
With the exception of the spigot cap and interior supports it is all Perspex. The outer envelope is conical in shape and made of opal 030
transmitting Perspex. Welded to the conical envelope is a white opal Perspex dome forming a complete one-piece hood.
TO the cast aluminium-alloy Spigot-Cap, which carries the Hood, is fitted a central support in the form of a rectangular trough in which
the Control Gear is fixed. To this assembly is also fitted the four-way Bi-pin lamp holders arranged on suitable castings.
The Perspex Hood is detached from the Spigot-Cap by a top ornamental hand screw which gives easy access to the interior for
maintenance purposes.
As standard these lanterns are supplied wired complete with instant start Control Gear.
| P142 |
F.4-40.V. |
4-40W or 4-20W |
1" B.S.P plain |
32 ½ |
22 |
10 ½ |
24 |
40 |
Fluorescent Lanterns On Typical Columns
For Group "B" Street Lighting
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| Utility Major Column | ByWay Column 25 degree Bracket |
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