House

Paul Yates Electrical

  Bulb Guide

Standard bulbs 

use one of the 2 end cap terminations shown here.
Standard size is BC (bayonet cap) & ES  (Edison screw)
sbc (small bayonet cap) & ses (small Edison screw) are often used in small fittings

Halogen bulbs 

Halogen gas is used with tungsten filaments to produce a brilliant white light.

Some types are  230 v and others are 12/24 volt types.

  Extra low voltage (12V) are often used in kitchen lighting systems.

Low energy bulbs

Available in BC and ES 
cap terminations.

Wattages range from
9 to 23 watts
(equivalent to 40-100 watts)
Extended life

Most useful in locations where they are left on for extended periods such as hallways & outdoors courtesy lighting. Ensure that you put in a bright enough bulb as on switch on they run at reduced output for the first minute & are therefore often  unsuitable for stairways.

General purpose bulbs. GLS

Wattage range 25, 40, 60, 100, 
150 w

Reflector bulbs

Par 38 is suitable for outdoors use in the correct fitting.

Wattages range from 30 to 150 w

Fluorescent tubes range from 4w to 70w

in 3 difffernt diameters,

15mm = T526mm = T8 & 38mm = T12

Link to a leading manufacturers site for further information       

Link to General Electric lighting for useful guides

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