What does the symbol labeled "OL" represent...

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Question 1 of 2066636eed28f7522a1c51dc33

What does the symbol labeled "OL" represent as shown in the power circuit on lines T1 and T3 to the motor as shown in figure "A" of the illustration? Illustration EL-0011

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Question 1 of 20

66636eed28f7522a1c51dc33

What does the symbol labeled "OL" represent as shown in the power circuit on lines T1 and T3 to the motor as shown in figure "A" of the illustration? Illustration EL-0011

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🔍 Key Concepts

• Location and purpose of overload protection in a motor starter (power circuit vs. control circuit) • Difference between current‑sensing elements in series with the motor and the auxiliary contacts that open the control circuit • How the symbol and label “All OL’s” in the control circuit relates to the OL devices in the power circuit

💭 Think About

• Look at where the OL symbols are placed on T1, T2, and T3. Are they carrying the full motor current or just part of the control circuit? What component normally sits in series with each motor line? • Compare the symbol and label for the device marked All OL’s in the lower (control) diagram to the OL symbols in the upper (power) diagram. Are they drawn as the same type of device or as a sensing element plus a separate contact? • Think about what actually heats up and trips when the motor is overloaded, and what part of the circuit physically opens to stop the motor.

✅ Before You Answer

• Verify which choice corresponds to the current‑sensing part of the overload device that is wired in series with the motor leads in the power circuit. • Verify which choice describes the separate normally closed contacts that open in the control circuit (these are labeled “All OL’s” at the right side of both diagrams). • Eliminate any answer that would normally be drawn only in the control circuit (not in all three motor lines) or that would replace the main fuses (F) already shown.

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Question 1 of 2066636eed28f7522a1c51dc33

What does the symbol labeled "OL" represent as shown in the power circuit on lines T1 and T3 to the motor as shown in figure "A" of the illustration? Illustration EL-0011

Back

Question 1 of 20

66636eed28f7522a1c51dc33

What does the symbol labeled "OL" represent as shown in the power circuit on lines T1 and T3 to the motor as shown in figure "A" of the illustration? Illustration EL-0011

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

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