5Lighting
(1)Effective provision shall be made for securing and maintaining sufficient and suitable lighting, whether natural or artificial, in every part of a factory in which persons are working or passing.
(2)The Minister may by regulations prescribe a standard of sufficient and suitable lighting for factories or for any class or description of factory or parts thereof, or for any process.
(3)Nothing in the foregoing provisions of this section or in any regulations made thereunder shall be construed as enabling directions to be prescribed or otherwise given as to whether any artificial lighting is to be produced by any particular illuminant.
(4)All glazed windows and skylights used for the lighting of workrooms shall, so far as practicable, be kept clean on both the inner and outer surfaces and free from obstruction; but this subsection shall not affect the whitewashing or shading of windows and skylights for the purpose of mitigating heat or glare.