(Solved): Show me the steps to solve A single phase circuit rated at 4 kW and cos\phi =0.85 is supplied at 22 ...

Show me the steps to solve A single phase circuit rated at 4 kW and

is supplied at 220 V 50 Hz . It is given that The maximum ambient temperature will not exceed

in Summer; It is wired in single-core LSF XLPE thermosetting) copper conductor cables inside metallic trunking; The circuit is grouped with two other similar circuits in the first 5 m of the cable run from the main incoming switchboard, and it will be subject to simultaneous overload. After the first 5 m of the run, the cable will be physically separated from the other two circuits and it will be installed on its own inside the metallic conduit mounted on the underside of the ceiling; Before connecting to the load, it was totally embedded within 0.4 m length of thermal insulation (fire stops); The total length of the circuit is 35 m . Determine: i. What is the minimum size BS88 HRC fuse you will select to protect the circuit? ii. With the voltage drop of the circuit to be restricted at

maximum, what is the minimum size cable you will select iii. Whether is the power loss requirement fulfilled for this circuit? State any appropriate assumption to support your answer.