Question: 2. In Figure Q2, a single-phase, 220 V. 3 KW motor of power factor 0.84 and efficiency 0.79 is fed by a 6 mm2 2/C

2. In Figure Q2, a single-phase, 220 V. 3 KW motor of power factor 0.84 and efficiency 0.79 is fed by a 6 mm2 2/C PVC/PVC copper cable. A 20 A BS88-2 HRC fuse is used for protecting this circuit from short-circuit fault. Given that: . the total cable length of the live and neutral conductor to form the circuit loop is 55 m; the resistance of the 6 mm- cable during short circuit is 7 0 /km; . the prospective short-circuit current at the 20 A BSSS HRC fuse is 6.5 kcA. 20 A BS88-2 6 mm: 2/C PVC/PVC copper cable HRC fuge 0XD -O Motor Figure Q2 (a) Determine the minimum prospective short circuit current at the motor terminals. (b) If the starting current of the motor is 6 times full load current and lasts for 5 seconds, comment whether the 20 A BS88-2 HRC fuse is suitably selected or not, with proper explanation. If not, determine the new minimum rating for the BS88-2 HRC fuse with proper explanation

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