A small electrical circuit is to be installed using a 3-core PVC cable with a cross- sectional area of 2.5 mm2 and a length of 32 meters. The load to be equipped is a water heater with a capacity of 4.2 kW. The circuit will be installed inside a small plastic mini trunk that contains another circuit in an ambient temperature of 35C. Determine if the cable is suitable for the purpose. If not, calculate the size of the appropriate cable.