What is low voltage (LV) electricity?
Low voltage (LV) electricity means electrical energy at voltages exceeding 32 Volt AC or 115 Volt DC, but not exceeding 100 Volt AC or 1500 Volt DC.
In alternating current (AC), the flow of electric charge periodically reverses direction, whereas in direct current (DC), the flow of electric charge is in one direction.
Fault currents of up to 20 times the rated current of a supply transformer can flow for short times during fault conditions. Arcs can be produced under these conditions with enough energy to cause an explosion or melt metallic switchboard cubicles and cause severe burns to skin.
Electrical workers should also be aware that circuit protection may not operate in such circumstances.
EnergySafety's Safe low voltage work practices by electricians – Code of practice prescribes principles and methods for the organisation and performance of safe work on electrical installations.