Florida Folks on restoring power. Please pass this around and it will give some idea of what it takes to restore power to all the homes after a hurricane. Then people awaiting power will realize what it takes to get the job done.
1st You have to check the line from the generating plant which in most cases is a 230,000 volt or 500,000 volt line. This is generally done by helicopter to fly the line and see where it is damaged. Once they know where and how bad they can send crews to fix it. The generating plant feeds the switch yards and transformer that send power to the substations.
2nd the switch yard in most cases steps the power down to 69,000 volts and then sends it to all the substations. So all the lines to the subs station have to be checked and marked for repairs. The sub stations have transformers that step the power down to what we call 15KV or 15,000 volts. From the substations it goes out and is what we call distributions lines. Continue reading