Its depending on cable dimension, current carring capacity and soil thermal resistivity.
EHV - EXTRA HIGH VOLTAGE - STARTING 500 KILOVOLTS IN UP (500,000 VOLTS)
EHV lines are type of electrical lines commonly used for experimentation in physics. They stand for 'Extra High Voltage' lines.
EHV = Extra High Voltage. To quote from the Wikipedia article (see link) "...this refers to equipment designed for more than 345,000 volts between conductors." Put simply - EHV transmission is the 'national grid' power system.
MAT-VE-AY-EHV
14 m
14 m
: Equine Herpes Virus-1 (EHV-1) is a contagious viral disease of horses that can cause respiratory disease, abortion and occasionally neurologic disease. : : : For more details, see the link attached on the left of this column
it depands on switching overvoltage or lightening overvoltage.
Extra High Voltage substation. It generally 132 kv or higher
SATA cables.
There are speaker cables, unbalanced analog cables, balanced analog cables, coaxial digital audio cables and optical audio cables.