Without derogating from any specific duty imposed on users of machinery by the Act, the user shall cause notices in both official languages to be exhibited within, and at all designated entrances to the premises, as the case may be, on which generating plant and transforming, switching or linking apparatus are situated, which notices -
a. prohibit unauthorized persons from entering such premises;
b. prohibit unauthorized persons from handling or interfering with electrical machinery;
c. contain directions of procedure in case of fire; and
d. contain directions on how to resuscitate persons suffering from the effects of electric shock:
Provided that this regulation shall not apply to miniature substations and distribution boxes, on condition and their access doors can be locked or bolted and that only authorised persons are permitted to open them and work thereon.