American Transmission Co. and other utilities are finding high-voltage electrical transmission line and substation upgrade projects place increased structural demand on existing steel-pole support ...

A transmission line is a far more complex piece of equipment than many people realize. In its simplest form it may be considered as just a pair of wires merely carrying ac power. Usually in these ...

The power grid is a complicated beast, regardless of where you live. Power plants have to send energy to all of their clients at a constant frequency and voltage (regardless of the demand at any one ...

The National Electric Safety Code (NESC) includes a clause sometimes referred to as the “5-mA Rule,” which states: For voltages exceeding 98 kV ac to ground, either the clearances shall be increased ...

For the first time in a half century, new high-voltage power lines are set to cross into Michigan, snaking up the center of the state. As a pair of major transmission line projects stretching some 95 ...

A proposed 500 kilovolt transmission line project that would connect NextEra Energy’s planned Woodside substation to Dominion Energy’s Aspen substation was approved by the PJM board of managers Dec.