Electrical & PPECâu 70 / 100
Why should the grounding prong on a three-prong plug never be removed?
a.It makes the plug fit better
b.It saves electricity
c.The grounding prong provides a safe path for fault current, reducing shock risk
d.It is purely decorative
Giải thích
The grounding prong provides a low-resistance path for fault current to flow safely to ground, reducing the risk of shock if a tool develops a fault. Removing or bending it defeats this protection. Tools with a missing ground prong should be taken out of service.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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