I have some homework and need to find the answer to this question:
For the following installations, choose a suitable type of electrical cable or electrical cord, and explain the properties or features of the cable you have chosen, which influenced your choice in selecting this particular cable / cord.
a) A 3300 volt supply cable to an overhead crane
b) A four core control cable which must be installed in a flame-proof location
c) A 32 amp ring main, in a domestic dwelling, where the cosen cable is to be buried within the plaster of the building wall