Regulation 301(1) The engineering manager of a mine shall in relation to the mine ensure that(a) a centrally located layout plan which indicates main supply and feed lines for the site together with each original source is provided for electrical equipment and installations;(b) the plan lists the main distribution systems and indicates general are distinction and outlets;(c) electrical equipment is labelled as follows:(i) distribution boards shall be labelled in a manner that makes them identifiable on the outside;(ii) main switches shall be labelled in accordance with the statutory requirements and be accessible from the outside when the distribution board is locked;(iii) circuit breakers, within the panel shall be labelled in a manner that adequately describes them;(iv) fuses are labelled, and where the board design does not accommodate the labelling of the fuses a legend is attached to the fuses; and(v) corresponding control switches are labelled appropriately;(d) the person who carries out the installation of the electrical equipment labels the switches immediately after the installation;(e) a piping network in the main distribution system is labelled in the following form:(i) critical valves and pipeline valves shall have an appropriate aluminium tag fixed to the valve;(ii) where for security reasons it is undersirable to identify the pipeline contents for general information, a key to codes is left at the main gate for issue to the fire department if they are called to the site;(iii) main valves in pump houses, supply and control feed points for chemicals, gases, and utility lines shall be labelled; and(iv) the direction of flow shall be indicated and shall include ring mains system