- 250 volts
- 125 volts
- 30 volts
- 650 volts
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
If the neutral/mid point of the system is connected with the earth, the voltage between the phases does not exceed 250 volts.
Your go-to platform for competitive exams, job opportunities, and mining resources. Since 2019, we’ve been dedicated to providing quizzes, books, notes, and exam preparation materials to help you succeed in the mining industry.