series of neutral conductor
parallel of neutral conductor
series of live conductor
parallel of live conductor
neutral cable
phase cable
earth wire
any wire/cable
open circuit
over load
short circuit and overload
open circuit and overload
To protect the operator
To protect the line
To prevent excessive current
To open the circuit
voltage caused by a short circuit
current flow caused by a short circuit
voltage caused by an open circuit
current flow caused by an open circuit