A transformer of the dry-core, open-ventilated-type shall be mounted so that there is an air space of not less than mm between the transformer enclosure and between a transformer enclosure and any adjacent surface.

Where an overcurrent protection device will not permit the motor to start, the rating of the overcurrent device shall be permitted to be increased to % of the motor full load current fuses rated up to 600 amps if a non-time-delay fuse is used.

Busways shall not be placed where subjected to vapours

Transformer shall be provided with a nameplate bearing the and seconday Voltage rating.