Iz The current carrying capacity of a cable under the defined installation conditions. This is the effective rating of the cable after the relevant rating
Ir The adjusted overload rating of an overcurrent protective device, in Amperes.
Prospective Fault Current (Ipf) is the value of overcurrent at a given point in a circuit resulting from a fault of negligible impedance between live
I2t The energy let-through of a device in A2s. The total amount of energy let through by a protective device for a given level of
The presence of harmonic content in the line conductors of a three-phase and neutral circuit can give rise to excessive levels of load current in
Equipment designed to be fastened to a support or other wise secured in a specific location.
A circuit connected directly to current-using equipment, or to a socket-outlets or other outlet points for the connection of such equipment.
Acircuit condition in which current flows through an abnormal or unintended path. The fault current may flow from line to line (phase fault) or line
It is often not desirable to size each conductor in a distribution system to support the total connected load at that point in the network.Diversity
An assembly containing protective devices associated with one or more outgoing circuits fed from an incoming circuit. In the ProDesign software,a distribution board (DB) may
