Before revision: Primary distribution Primary distribution voltages range from 4 kV to 35 kV phase-to-phase (2.4 kV to 20 kV phase-to-neutral) Only large consumers are fed directly from distribution voltages; most utility customers are connected to a transformer, which reduces the distribution voltage to the low voltage "utilization voltage", "supply voltage" or "mains voltage" used by lighting and interior wiring systems.
After revision: In power distribution, low voltage (LV) is defined as voltages under 1 kilovolt (KV), medium voltage (MV) is defined as voltages from 1 KV to 35 KV or as 1 to 75 KV, and high voltage (HV) is defined as voltages from 35 to 230 URL This is a definition that has changed over time and can change depending on the URLPrimary distribution Primary distribution voltages range from 4 kV to 35 kV phase-to-phase (2.4 kV to 20 kV phase-to-neutral) Only large consumers are fed directly from distribution voltages; most utility customers are connected to a transformer, which reduces the distribution voltage to the low voltage "utilization voltage", "supply voltage" or "mains voltage" used by lighting and interior wiring systems.