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Define Voltage types?
1. Extra Low? Normally not exceeding 50 Volts between conductors, and not exceeding 30 Volts A.C. or 50 Volts D.C. between any conductor and earth.
2. Low? Normally exceeding extra low voltage but not exceeding 250 Volts, whether between conductors or between any conductor and earth.
3. Medium? Normally exceeding 250 Volts but not exceeding 650 Volts, whether between conductors or between any conductor and earth.
4. High? Normally exceeding 650 Volts between phases and earth.
2. Low? Normally exceeding extra low voltage but not exceeding 250 Volts, whether between conductors or between any conductor and earth.
3. Medium? Normally exceeding 250 Volts but not exceeding 650 Volts, whether between conductors or between any conductor and earth.
4. High? Normally exceeding 650 Volts between phases and earth.