-1- G/TBT/N/THA/3 25 
Explanatory Memorandum  
Draft Ministerial Regulation  
Definition s of energy -efficient light f ittings  for double -capped fluorescent l amps   
B.E. …  
-------------------  
Principle  
Definitions of energy -efficient light f ittings  for double -capped fl uorescent l amps  
Rationale  
It is hereby  deemed appropriate and necessary  to define  a light fitting with  an energy 
consumption value  not lower  than  as specified in this ministerial regulation as an energy efficient 
light fitting  for a double -capped fluoresce nt lamp.  The objective s of this regulation are  to conserve  
energy and promote the us e of energy efficient  materials . This will provid e the manufacturers and 
sellers of such products  with the right to support and assistance from the Energy Conservation 
Prom otion Fund. It will encourage  and promote their manufactur e and sale. Consumers will be 
able to use energy economically and efficiently, and will have the option  to use  energy efficient 
light fittings  for d ouble -capped fluorescent lamps . This will  promote  the country’s  energy 
consumption efficiency  and reduce pollution.  -2-  
DRAFT  
Ministerial Regulation  
Definitions of energy -efficient light f ittings  for double -capped fluorescent l amps  
B.E. … 
-----------------------------------  
In accordance with  Section 6, Clause 2 and Section 23, Clause  1(3) and Clause 3 of the 
Energy Conservation Promotion Act, B.E. 2535, with amendments  made to the Energy 
Conservation Promotion Act (Issue 2), B.E. 2550  contain ing a number of  provisions related to the 
limitation of private rights and liberties as permitted  in Section 29, together  with Section 33, 
Section 41 and Section 43 of the Constitution  of the Kingdom of Thailand  – with the guidance of 
the National Energy Policy Committee  – the Minister of Energy  issue s a ministerial reg ulation as 
follows:  
 
1. In t his m inisterial regulation:  
“Light fitting ” means a fitting  for a double -capped fluorescent lamp  to distribut e, filter and 
emit the light sourced from  a double -capped fluorescent lamp. Th e back of the fitting  is fixed in a 
prepa red slot on an installation surface  according to  the types specified in this regulation.  
“Double -capped fluorescent lamp” mean s a hollow tube  fluorescent lamp  in a linear 
shape  for general lighting purpose s, and use d with separate receptacles  and  single -phase 
alternating current at a maximum of  250 volts and  a frequency of 50 Hertz . Excluding:  colo ur 
double -capped fluorescent lamps  or those  generat ing invisible off-spectrum  light ; double -capped 
fluorescent lamps for colo ur matching wh ere colo ur appears at one point of a black  body locus ; 
double -capped fluorescent lamps for use in industrial and agricultural processes ; double -capped 
fluorescent lamps for medical purposes ; and double -capped fluorescent lamps that are restricted 
by law and used only in specific  condition s other than  general lighting  and can be distinguished 
from those for general lighting . 
"Energy s tandard value” means the ratio of light  intensity  emitted  from a  light fitting , over 
the light intensity emitted  from double -capped fluorescent lamp . The unit is a  percent age. 
 -3-  
2. An energy efficient l ight fitting  must have an energy consumption efficiency  value  not 
lower  than  as specified in th is m inisterial regulation , considering the economic situation , the 
government’s energy polic y, the readines s of the manufactur ers and sellers of the light fittings , as 
well as  support and assistance provided  to these manufacturer s and sellers . 
The energy consumption efficiency  value must be defined by light fitting  types  as follows:  
Light Fitting type  Energy standard value 
(per cent) 
1. Louver Fittings  88.0 – 100.0 
2. Diffuser Fittings  76.0 – 87.0 
3. Industrial Fittings  91.0 – 100.0 
 
3. The formula for calculating  energy standard value is as follows:  
Energy standard value =           Light intensity from the fitting  (lumen s)            x 100  
  Light intensity  from the fluorescent Lamp  (lumen s) 
 
4. The test for finding the energy standard value of a light fitting  must be carried out  by 
the organi sations specified and announced by the minister.  
5. The standard s and methodology of the test for determining  the energy standard value 
of a light fitting  must comply with the specifi cations published  by the minister.  
 
Given on:  B.E. … 
 
Minister of Energy