Module B

Question 1

What does ‘M1’ mean in a NEMA diagram?

Answer 1

Magnetic motor starter contactor number 1.

Question 2

What does ‘R1’ mean in a NEMA diagram?

Answer 2

Relay number 1

Question 3

What does ‘CR’ stand for?

Answer 3

Control relay

Question 4

What does ‘K’ mean in an IEC diagram?

Answer 4

Relay.

Question 5

What is the IEC identifier for a magnetic motor starter contactor?

Answer 5

KM

Question 6

What does ‘F’ represent in both systems?

Answer 6

Forward (NEMA), or Relay (IEC depending on context).

Question 7

How should conductors be identified when converting wiring diagrams?

Answer 7

They can be numbered or lettered; consistent labeling across all branches is essential.

Question 8

When is a conductor label changed?

Answer 8

Only when separated from the circuit by a device

Question 9

What must you do to verify correct transfer to a schematic?

Answer 9

Count the number of connection points and ensure they match between the schematic and wiring diagram.

Question 10

Does the order of components in series affect electrical operation?

Answer 10

No, but it affects the number of conductors needed and total wire length.

Question 11

What’s a strategy to reduce total wire length?

Answer 11

Connect to the closest station first (especially stop buttons in series).