• Switchboards and motor control centre name and tag number.
• Bus-section numbers or letters.
• Cubicle numbers or letters.
• Line voltage, number of phases, number of wires, frequency, busbar continuous current rating.
• Busbar nominal fault breaking capacity in kA at 1 or 3 seconds.
• Identification of all circuit breakers, fuse-contactor units, and their nominal current ratings.
• Neutral earthing arrangements, e.g. connections to the incomers.
• Protective devices of all incomers, bus-section circuit breakers, busbars, and outgoing circuits.
• Interlocking systems in schematic form.
• Local and remote indication facilities.
• Details of special devices such as transducers, automatic voltage regulators, synchronising schemes,
fault limiting reactors, reduced voltage motor starters, busbar trunking.
• Rating, ratio and accuracy class of current and voltage transformers.
• Identification of spare and unequipped cubicles.
• References to other drawing numbers, e.g. continuation of a switchboard, associated switchgear,
drawing in the same series, legend drawing, cables schedule and protective relay schedule.
• Column or box for detailed notes.
• Column or box for legend of symbols.
