switchboard design of low voltage (LV) switchboards rated for high fault currents, including: trade calculations encompassing: mathematical techniques relevant calculations linear measurement, areas, volumes and ratios engineering mechanics encompassing: base physical quantities concepts, principles, International System of Units (SI) units, their applications in engineering calculations in relation to physical quantities and associated formulae mass, velocity, acceleration, force, weight, density and angles energy/work/power moments/torque centre of gravity mechanical advantage levers pulley blocks efficiency friction vectors resolution of forces forces in strung conductors forces on poles and towers determination of sag pressure/stress elementary fluid mechanics engineering materials encompassing: classification ferrous and non-ferrous metals steels and alloys properties tensile strength temperature and expansion in metals stress and strain ductility applications corrosion galvanic corrosion hardwoods and soft woods fault current calculations encompassing: calculation of fault currents calculation/determination of positive, negative and zero sequence impedances determination of fault current breaking and let-through energy capacities of protection devices the influence of fault/arc impedances impedances operative for phase-to-phase and phase-to-earth faults calculation of fault currents for phase-to-phase and phase-to-earth faults approximation calculations by selecting the components with the major impedance problem-solving techniques relevant manufacturer specifications and operating instructions relevant job safety assessments or risk mitigation processes relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace quality, instructions, policies and procedures. |