An toànCâu 469 / 521
Class 00 and Class 0 rubber insulating gloves are rated for maximum AC use voltages of approximately:
a.5,000 volts and 10,000 volts
b.250 volts and 500 volts
c.500 volts and 1,000 volts respectively
d.50 volts and 100 volts
Giải thích
Class 00 gloves are rated to about 500V and Class 0 gloves to about 1,000V AC maximum use voltage. The 5,000/10,000V figures apply to higher classes, and 250/500V or 50/100V understate the ratings of these two glove classes.
Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Which equipment, when likely to require examination or servicing while energized, must be field- or factory-marked to warn of potential arc-flash hazards?
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