Near my house , a building under construction is complete and they have installed a transformer. Now they have covered the area below to transformer with crushed stones.
I have seen in many places , the same phenomena.
Crushed stone is a highly resistive material and is used to protect the passing persons from step potential which may be very high and dangerous if there is an electrical fault.
The other reasons are to avoid water stagnation ,to prevent growth of plants under transformer.
The main reason for placing the stones is to protect the person from High Voltage ( HV ) while walking. We know that we can not walk fast over stones , our steps do become slow and with this our stepping potential becomes less which is very important for our safety, since stepping potential must not be more than a certain calculated value.
I have seen in many places , the same phenomena.
Crushed stone is a highly resistive material and is used to protect the passing persons from step potential which may be very high and dangerous if there is an electrical fault.
The other reasons are to avoid water stagnation ,to prevent growth of plants under transformer.
The main reason for placing the stones is to protect the person from High Voltage ( HV ) while walking. We know that we can not walk fast over stones , our steps do become slow and with this our stepping potential becomes less which is very important for our safety, since stepping potential must not be more than a certain calculated value.
