There are any number of possible scenarios with electrical hazards and safety. This is more true with older buildings and granny flats, and sometimes you really need to be aware of it. As the years pass, remember that some screws may be loose which means be careful of loose wires. Working with electrical wires requires some knowledge of electricity and knowing if the wires are live. The heat from lighting fixtures will cause the insulation to become brittle. If there is no longer any protective barrier between you and exposed wires, get this fixed. Electricity does not have to be dangerous to work with as long as you understand what to do.