A single-phase,230V, flat twin and earth TPS copper cable is to be installed to supply to a new oven in a bakery. The installation conditions are: The voltage at the switchboard is 230V

The maximum permitted drop 2%.

The cable is route length is20metres

The cable is clipped direct (touching)

The load is 8 kW.

The ambient air temperature is 35 degrees

The conductor temperature is 75 degrees.

.(a)Calculate minimum size copper cable that can be used to supply the load.(turn over)

(b)Calculate minimum size copper cable that can be used to satisfy the volt drop requirements.

(c)State the minimum size copper cable that will satisfy the load and voltage drop requirements.