BULBS PAGE
WELCOME TO THIS PAGE , It is all about Bulbs .
In streetlights they used to use Fluorescent Tubes, SLI/H Tubes, GLS Bulbs , Mercury Bulbs , SOX Bulbs and Gas .
Nowdays they use SON-T , SOX , Metal Halide and Compact Fluorescent Bulbs .
The modern trend now is to use SON-T bulbs instead of SOX in the 1990s.
Nowdays (Year 2010) they use SON-T ,LED,Compact Fluorescent Bulbs (CFL), CosmoPolis Cosmo White bulb (CPO-TW) and Metal Halide .
Sodium Lamp Classification
As with mercury lamps, a letter classification system has been developed to assist lamp identification .
Classification Meaning
S or SQ Sodium
LI Linear lamp with cap at each end
X Standard single ended low pressure
N High pressure
T Tubular single ended lamp
TD Tubular double ended lamp
--------------------------------------------------------------------------------------------
SON is a
S or SQ Sodium
N High pressure
I do not know what the O means? in SON.
SOX is a
S or SQ Sodium
X Standard single ended low pressure
I do not know what the O means? in SOX.
SLI/H is a
S or SQ Sodium
LI Linear lamp with cap at each end
I do not know what the H means? In SLI/H
Type of Fluorescent Tube colours |
Colour Temp (K) KELVIN |
Type of Bulb colour |
|
1700 |
Colour of a SLI/H bulb |
|
1750-2000 |
Colour of a SOX bulb |
|
1900-2100 |
Colour of a SON bulb |
HOME-LITE |
2600 |
|
WARM WHITE |
2700 |
Colour of a GLS bulb |
|
2720-2880 |
Colour of a CosmoPolis Cosmo White bulb (CPO-TW) |
WARM WHITE |
3000 |
|
DE LUXE WARM WHITE |
3000 |
|
WHITE |
3400-3500 |
Standard colour for offices ,etc . |
PLUS WHITE |
3600 |
|
DE LUXE NATURAL |
3600 |
|
|
3750-4300 |
Colour of a MBF bulb |
NATURAL |
4000 |
|
KOLOR-RITE |
4000 |
|
COOL WHITE |
4000-4100 |
|
Neutral white |
4100 |
Moonlight |
Neutral white |
4100K - 4250K - 4800K |
|
DAYLIGHT (COOL WHITE) |
4300 |
|
|
5000 |
Horizon daylight |
DAYLIGHT |
6000 |
|
COOL DAYLIGHT |
6500 |
|
NORTHLIGHT/COLOUR MATCHING |
6500 |
|
ARTIFICAL DAYLIGHT |
6500 |
|
Natural sunlight ( morning , afternoon ) is between 2500-3000K range and at highnoon it is very near 6000K .
Light is measured in (K) KELVIN ( Bulbs Colour Temperture ) .
This is a single ended bulb,with low pressure sodium with neon and gives of poor monochromatic light.
when the bulb starts up ,the current passes through the neon gas( red light) which in turn heats up the solid sodium which changes it in to a gas ,then the current goes through the sodium gas which the light changes to an yellow light . It take between 2-7 mins to warm up depending on the wattage of the bulb used.
MOUNTING HEIGHT FOR BULBS
5 M |
6 M |
8 M |
10 M |
12 M |
||
SOX |
18W |
35W |
55W |
90W |
135W |
180W |
SOXE |
18W |
26W |
36W |
66W |
91W |
131W |
All the lamp caps are BC
This is the most efficient bulbs you can buy.
This needs control gear to run the bulb.
These two charts showing the nominal output of these bulbs and the colour of them .
SOX |
10W |
18W |
35W |
55W |
90W |
135W |
180W |
Light output ( Lumens at 100hrs) |
1000 |
1800 |
4500 |
7400 |
13000 |
22500 |
33000 |
Colour Temp (K) |
2000 |
2000 |
2000 |
2000 |
1800 |
1800 |
1750 |
Nominal bulb voltage |
|
57V |
70V |
109V |
112V |
164V |
240V |
Nominal bulb current |
|
0.35V |
0.6A |
0.6A |
0.94A |
0.95A |
0.91A |
Run up time |
|
|
7min |
7min |
9min |
10min |
12min |
SOX-E |
18W |
26W |
36W |
66W |
91W |
131W |
Light output ( Lumens at 100hrs) |
1800 |
3500 |
5700 |
19700 |
17500 |
26000 |
Colour Temp (K) |
2000 |
2000 |
2000 |
1800 |
1800 |
1750 |
This chart showing the nominal size of these bulbs .
SOX , SOX-E |
10W |
18W |
26W-35W |
36W-55W |
66W-90W |
91W-135W |
131W-180W |
Length of bulb |
150mm |
216mm |
310mm |
425mm |
528mm |
775mm |
1120mm |
Diameter of bulb |
41mm |
54mm |
54mm |
54mm |
68mm |
68mm |
68mm |
This is a Double ended bulb,with low pressure sodium with neon and gives of poor monochromatic light.
when the bulb starts the current passes through the neon gas( red light) which in turn heats up the solid sodium in to a gas ,then the current goes through the sodium gas which the light changes to an yellow light . It take between 2-7 mins to warm up depending on the wattage of the bulb used.
You used to buy these bulbs in these wattages 140-200W .
The Bulb has a Bi-pin cap
A LOT of councils replaced these bulbs in 87-90 with either SOX or SON-T lanterns.
In Bucks they used SOX and Berks SON-T .
I seen some of these bulbs still working in 93 in Essex with thorn alpha 6 lanterns.
I seen some more working in 1999 in Luton ( near the airport) with THORN ALPHA 6 lanterns.
This needs control gear to run the bulb.
This chart showing the nominal output of these bulbs , the colour of them and the size of them .
SLI/H |
140W |
200W |
200W High output |
Light output ( Lumens at 2000hrs) |
20000 |
25000 |
27500 |
Colour Temp (K) |
1700 |
1700 |
1700 |
Length of bulb |
909mm |
909mm |
909mm |
Diameter of bulb |
39.5mm |
39.5mm |
39.5mm |
Nominal bulb voltage |
175V |
145V |
145V |
Nominal bulb current |
0.9A |
1.6A |
1.6A |
This is a single ended bulb,with high pressure sodium with mercury and gives good golden white light.
The bulb shape is Elliptical Hard glass (outer envelope ),with white internal coating.
When the bulb starts up ,the current passes through the mercury gas( blue light) which in turn heats up the solid sodium which changes it in to a gas ,then the current goes through the sodium gas which the light changes to an golden white light.
It take between 2-7 mins to warm up depending on the wattage of the bulb used.
The Bulb has a ES/GES cap depending on the wattage of the bulb used.
You can get these in different types ,ones with ignitors in them and ones with out.
This needs control gear to run the bulb.
Same as SON,except for the bulb it is made of clear glass and it is tubular.
You can get these in different types ,ones with ignitors in them and ones with out.
This needs control gear to run the bulb.
This is a rough guide on the mounting height for SON-T bulbs .
|
4 M |
5 M |
6 M |
8 M |
10 M |
12 M |
15 M |
HIGH MAST |
SON-T |
50W |
50W-70W-100W |
70W-100W |
150W-250W |
150W-250W |
250W-400W |
400W-600W |
400W-600W-1000W |
This chart showing the nominal output of normal SON-T bulbs and the colour of them .
SON-T |
50W |
70W |
100W |
150W |
250W |
400W |
1000W |
Light output ( Lumens at 100hrs) |
3800 |
5850 |
10000 |
14500 |
25000 |
48000 |
130000 |
Colour Temp (K) |
1900 |
1900 |
1900 |
1900 |
2000 |
2100 |
2100 |
MERCURY BULBS
MBF ( HPL ) This is the type of Mercury Bulb .
This bulb has got mercury in it which this gives of a blue -white light.
It take between 2-7 mins to warm up depending on the wattage of the bulb used.
This needs control gear to run the bulb,you can buy them in ES/GES caps and in the 80W type they do them in 3pin BC cap .
You can get these in different types
This chart showing the nominal output of normal MBF ( HPL ) bulbs and the colour of them .
MBF ( HPL ) |
50W |
80W |
125W |
250W |
400W |
700W |
1000W |
2000W |
Light output ( Lumens at 100hrs) |
1800 |
3700 |
6300 |
13000 |
22000 |
40000 |
58000 |
125000 |
Colour Temp (K) |
4300 |
4050 |
3850 |
3700 |
3800 |
3900 |
3750 |
3750 |
This is a double ended tube,with low pressure mercury gas in the tube .
When the bulb starts it flash about 2 or 3 times ,then stay on if it is a switch start type . You can get these in QUICK START TYPE and these come on straight away . You don't need starter switches in the circuit.
The bulb gives out is a white light.
The Bulb has a Bi-pin cap
This is a normal household fluorescent tube.
This needs control gear to run the bulb.
You can get these in all type of colours . Here is a few of them.
Fluorescent Tube colours |
Colour Temp (K) KELVIN |
Type of Bulb colour |
HOME-LITE |
2600 |
|
WARM WHITE |
2700 |
Colour of a GLS bulb |
WARM WHITE |
3000 |
|
DE LUXE WARM WHITE |
3000 |
|
WHITE |
3400-3500 |
Standard colour for offices ,etc . |
PLUS WHITE |
3600 |
|
DE LUXE NATURAL |
3600 |
|
NATURAL |
4000 |
|
KOLOR-RITE |
4000 |
|
COOL WHITE |
4000-4100 |
|
Neutral white |
4100 |
Moonlight |
Neutral white |
4100K - 4250K - 4800K |
|
DAYLIGHT (COOL WHITE) |
4300 |
|
DAYLIGHT |
6000 |
|
COOL DAYLIGHT |
6500 |
|
NORTHLIGHT/COLOUR MATCHING |
6500 |
|
ARTIFICAL DAYLIGHT |
6500 |
|
Natural sunlight ( morning , afternoon ) is between 2500-3000K range and at highnoon it is very near 6000K .
Light is measured in (K) KELVIN ( Bulbs Colour Temperture ) .
General purpose tubes
Tube Wattage |
Length of tube |
Length of tube |
Tube Diameter |
Tube Diameter |
Tube Diameter |
Cap |
20 |
2FT |
600MM |
38MM |
1.5IN |
T12 |
Bi-Pin (G13) |
40 |
2FT |
600MM |
38MM |
1.5IN |
T12 |
Bi-Pin (G13) |
40 |
4FT |
1200MM |
38MM |
1.5IN |
T12 |
Bi-Pin (G13) |
65/80 |
5FT |
1500MM |
38MM |
1.5IN |
T12 |
Bi-Pin (G13) |
75/85 |
6FT |
1800MM |
38MM |
1.5IN |
T12 |
Bi-Pin (G13) |
125 |
8FT |
24000MM |
38MM |
1.5IN |
T12 |
Bi-Pin (G13) |
This range of tubes brought out in the late 70s .
Tube Wattage |
Length of tube |
Length of tube |
Tube Diameter |
Tube Diameter |
Tube Diameter |
Cap |
18 |
2FT |
600MM |
26MM |
1IN |
T8 |
Bi-Pin (G13) |
36 |
4FT |
1200MM |
26MM |
1IN |
T8 |
Bi-Pin (G13) |
58 |
5FT |
1500MM |
26MM |
1IN |
T8 |
Bi-Pin (G13) |
70 |
6FT |
1800MM |
26MM |
1IN |
T8 |
Bi-Pin (G13) |
100 |
8FT |
24000MM |
38MM |
1.5IN |
T8 |
Bi-Pin (G13) |
Compact Fluorescent Bulb (CFL)
This is a small version of the Fluorescent tube and it is a single ended tube,with low pressure mercury gas in the tube . The bulb gives out is a white light.
This needs control gear to run the bulb and with some types they don't need it .
You can get these in all type of colours . Here is a few of them.
Type of colour |
Colour Temp (K) |
|
WARM WHITE |
2700 |
Colour of a GLS bulb |
COOL WHITE |
5000-5550 |
|
Metal Halide MBI
This is the same as the MBF ( MERCURY ) bulbs , and they also contain metal halides in a quartz discharge tube and they give more light and better light.
It take between 2-7 mins to warm up depending on the wattage of the bulb used.
This needs control gear to run the bulb.
This is a new range of bulbs which PHILIPS brought out in the late 2000s.
This needs eletronic control gear to run the bulb.
CPO-TW |
45W |
60W |
90W |
140W |
Light output ( Lumens at 100hrs) |
|
|
|
|
Colour Temp (K) |
2720 |
2720 |
2880 |
2880 |
Nominal bulb voltage |
|
|
|
|
Nominal bulb current |
|
|
|
|
Run up time |
|
|
|
|
This is a new range of bulbs which brought out in the late 2000s.
GLS ( GENERAL LIGHTING SERVICE )
This bulb has got a tungsten filament in it which current passes through.This goes white hot and this produces the light.
This is a normal household Light Bulb.You can buy them in ES/GES /BC caps .
This bulb is not energy efficient and you don't need control gear for them .
This chart showing the nominal output of normal GLS ( pearl ) bulbs and the colour of them .
GLS ( pearl ) |
15W |
25W |
40W |
60W |
75W |
100W |
150W |
200W |
3OOW |
500W |
1000W |
Light output ( Lumens) |
115 |
225 |
420 |
710 |
940 |
1360 |
2180 |
2900 |
4650 |
8300 |
1840 |
Colour Temp (K) |
2750 |
2750 |
2750 |
2750 |
2750 |
2750 |
2750 |
2750 |
2750 |
2750 |
2750 |
GAS
Along time ago when they first starting to have street lights along the roads , they had used gas to light them . Every day the gas lighter man used to turn the lights on in the night and turn them of in the morning .
There is still allot of gas lights in LONDON , CAMBRIDGE and BOURNEMOUTH . In LONDON the gas lights has got switches in them . The old timeswiches are clockwork and the new timeswiches run from batteries. In some parts of LONDON they got photocells in the gas light lanterns which are run from batteries . In 1999 in LONDON I seen some with photocells on them.
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UPDATED 20 6 2014
I STARTED THIS PAGE ON THE 12 6 2001
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