As shown in figure "A" of the illustration,...

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Question 1 of 205eccefa4bacbc34ba4d48393

As shown in figure "A" of the illustration, what statement is true concerning the safety disconnect switch? See illustration EL-0172.

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Question 1 of 20

5eccefa4bacbc34ba4d48393

As shown in figure "A" of the illustration, what statement is true concerning the safety disconnect switch? See illustration EL-0172.

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🔍 Key Concepts

• Look closely at figure A and trace how the fuses connect to the ground bus and disconnect switch. • Think about what condition is safest for a technician working on the fuses during maintenance – should the fuses be connected to ground or isolated from ground? • Notice the mechanical interlock between the door, the disconnect, and the ground connection, and what it does when the switch is opened or closed.

💭 Think About

• When the disconnect handle is moved to the OPEN position, what happens to the path from the fuses to the ground bus in the drawing? • In the CLOSED position, do the fuses appear to have a solid path to ground, or are they only connected to the line side (L1, L2, L3)? • Which switch position (open or closed) would you expect to be used when someone is physically handling or replacing the fuses?

✅ Before You Answer

• Verify which conductor symbol actually goes to the ground bus and how it changes with the position of the disconnect. • Confirm whether the ground connection is engaged in the OPEN or CLOSED position of the disconnect by following the dashed/mechanical interlock lines. • Ask yourself: for maintenance safety, would the design intentionally leave energized parts floating, or would it provide a direct ground path to discharge stored energy and prevent shock?

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Question 1 of 205eccefa4bacbc34ba4d48393

As shown in figure "A" of the illustration, what statement is true concerning the safety disconnect switch? See illustration EL-0172.

Back

Question 1 of 20

5eccefa4bacbc34ba4d48393

As shown in figure "A" of the illustration, what statement is true concerning the safety disconnect switch? See illustration EL-0172.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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