How many volts are they in a substation?

Answer 1

Answer for USA, Canada and countries running a 60 Hertz supply service.Sub stations have a variety of voltages depending on what systems they are connected to. At the sub station, the transmission voltage (might be 250,000 volts) is reduced to distribution voltage (might be 14,000 volts). The 14,000 volts is distributed through out the community and then the voltage is further reduces by pole Transformers to a voltage (120/240 volts) that can be used by homes.

Answer 2

Substations typically operate at high voltages ranging from 69,000 to 765,000 volts for transmission and distribution of electricity. The specific voltage level of a substation depends on the power grid it is a part of and the electricity demand in the region it serves.