Jones Quarry crushed aggregate used for insulation of ground surface layers on Transpower substation switchyards – an integral part of safety in switchyards.

Jones Quarry switchyard crushed rock aggregate complies with Transpower Specification TP PS 52.04, and is paramount to safety.

The purpose of using Jones Quarry crushed rock aggregate in insulating surface layers in substation switchyards is to reduce the body currents that could flow through personnel if they are in contact with metal objects such as structures, or equipment tanks etc. when system earth faults occur.

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