All equipment shall comply with the provisions of this Standard in respect of selection of materials, design, and construction, and with the tests specified herein.
The selection and application of materials, and the design and construction of all equipment shall be such as will ensure, as far as is reasonably possible and economically practicable, that when the equipment is standing, supported, or fixed in a normal position and operating in a normal manner, and account being taken of ordinary wear and tear and other depreciating factors that can reasonably be anticipated, no person will be exposed to risk of injury or electric shock, and there will be no unwarrantable risk of fire either
(a) through the functioning of the equipment under conditions required by its use at rated loading; or
(b) through the mechanical or electrical failure of any material or of the equipment itself or of any part thereof.
This Standard does not, in general, take into account the use of equipment by young children or infirm persons without supervision, or playing with the equipment by young children.
NOTE Non-hygroscopic material is taken to be material that does not, after being conditioned in an oven at 50°C ± 5°C for 24h ± 1h and then cooled in a desiccators, absorb greater than 5% by weight of moisture during a 48 hour treatment in humidity of 95% at a temperature of 20°C ± 5°C.