Three. 1-phase or 3-phase electrical system is adopted. Divided as follows
3.1 1 phase will have two lines in the system contains a line (with light) line 1 and line neutral (no fire) 1 lines with voltage 220 - 230 volts
a frequency of 50 Hz (hz. )
3.2, 3-phase, 4-wire system will consist of a string line (light) line 3 and line neutrons (no fire), 1 x voltage between line
.
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