311

Motor Nameplate Information: 208-230/460-V 3Ø 75 hp Supply: 3-pole breaker in a 277/480-V, 3-ph, 4-W panelMinimum size circuit conductors are ___ AWG.

1

Motor Nameplate Information: 115/230-V 1Ø 5 hp Supply: 2-pole breaker in a 120/240-V, 1-ph, 3-W panel Minimum size circuit conductors are ___ AWG.

10

Motor Nameplate Information: 208-230/460-V 3Ø 71/2 hp Supply: 3-pole breaker in a 120/240-V, 3-ph, 4-W panel Minimum size circuit conductors are ___ AWG.

10

The nameplate for a 15 hp, three-phase motor shows an FLA of 20 amps at 460 volts. What minimum size wire is required for this motor?

10

Scenario 230.28Motor Nameplate Information: 5 hp 208-230/460-V 3Ø Branch Circuit Supply: 3-pole breaker in a 120/208-V, 3-ph, 4-W panelFor the motor in Scenario 230.28, the minimum size SO cord permitted contains ___ AWG conductors.

11

Motor Nameplate Information: 115/230-V 1Ø 11/2 hp Supply: 1-pole breaker in a 120/240-V, 1-ph, 3-W panelSJO cord is used to connect the motor. The minimum size conductors permitted in the cord are ___ AWG.

12

Scenario 230.27Motor Nameplate Information: 3 hp 208-V 1Ø Branch Circuit Supply: 2-pole breaker in a 120/208-V, 3-ph, 4-W panel For Scenario 230.27, the smallest circuit conductors permitted are ___ AWG.

12

When solving voltage drop problems involving motor circuit problems you should not multiply by ___?

125%

Motor Nameplate Information: 208-230/460-V 3Ø 3 hp Supply: 3-pole breaker in a 120/208-V, 3-ph, 4-W panelMinimum size circuit conductors are ___ AWG.

14

Motor Nameplate Information: 208-230/460-V 3Ø 125 hp Supply: 3-pole breaker in a 120/240-V, 3-ph, 4-W panelMinimum size circuit conductors are ___ AWG or kcmil where 2 paralleled sets of conductors are used.

3/0

Motor Nameplate Information: 115/230-V 1Ø 5 hp Supply: 1-pole breaker in a 120/240-V, 1-ph, 3-W panelMinimum size circuit conductors are ___ AWG.

4

The nameplate for a 15 HP, three-phase motor shows an FLA of 35 amps at 230 volts. What minimum size SOO cord is required to connect the motor to the branch circuit?

4

Motor Nameplate Information: 208-230/115-V 1Ø 71/2 hp Supply: 2-pole breaker in a 120/208-V, 3-ph, 4-W panel Minimum size circuit conductors are ___ AWG.

6

Motor Nameplate Information: 115/230-V 1Ø 3 hp Supply: 1-pole breaker in a 120/240-V, 3-ph, 4-W panelWhat minimum size SJ cord is needed to connect this motor?

7

Motor Nameplate Information: 115/230-V 1Ø 3 hp Supply: 1-pole breaker in a 120/240-V, 3-ph, 4-W panelThe minimum size circuit conductors permitted are ___ AWG.

8

The nameplate for a 15 HP, three-phase motor shows an FLA of 18 amps at 460 volts. What minimum size SOO cord is required to connect the motor to the branch circuit?

9

8

Figure 230.261Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.261. Between the panel and the wireway, the minimum size circuit conductors for Motor #1 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

12

Figure 230.261Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.261. Between the panel and the wireway, the minimum size circuit conductors for Motor #2 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

10

Figure 230.261Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.261. Between the panel and the wireway, the minimum size circuit conductors for Motor #3 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

10

Figure 230.261Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.261. The smallest circuit conductors that can be installed between the wireway and the safety switch for Motor #1 are ___ AWG.

6

Figure 230.271Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit. The small wireway is located near the motor location.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.271. Between the panel and the wireway, the minimum size circuit conductors for Motor #1 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

8

Figure 230.271Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit. The small wireway is located near the motor location.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.271. Between the panel and the wireway, the minimum size circuit conductors for Motor #2 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

4

Figure 230.271Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit. The small wireway is located near the motor location.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.271. Between the panel and the wireway, the minimum size circuit conductors for Motor #3 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

12

Figure 230.271Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit. The small wireway is located near the motor location.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.271. Between the panel and the wireway, the minimum size circuit conductors for Motor #4 are ___ AWG. Count the number of circuit conductors in the conduit and determine ampacity inside the conduit from the 90º column.

8

Given the information shown in Figure 230.225, the minimum size circuit conductors permitted are ___ AWG.

6

Refer to Figure 230.121. The minimum size circuit conductors permitted are ___ AWG.

6

Refer to the information shown in Figure 230.230. The motor is located 160 feet from the panelboard and the specifications limit the voltage drop to 3% at this motor. Use K=10.86 and nameplate current to determine the proper size wire to satisfy the specs.

14

Refer to the information shown in Figure 230.242. The minimum size circuit conductors are ___ AWG.

14

Refer to the motor nameplate shown in Figure 230.111. The smallest branch circuit conductors that can be installed between the 1-pole circuit breaker in the 120/240-volt, 3Ø, 4-wire panelboard and the motor are ___ AWG.

8

Refer to the motor nameplate shown in Figure 230.113. The smallest branch circuit conductors that can be installed between the 3-pole circuit breaker in the 120/208-volt, 3Ø, 4-wire panelboard and the motor are ___ AWG.

8

Refer to the motor nameplate shown in Figure 230.115. The smallest branch circuit conductors that can be installed between the 1-pole circuit breaker in the 120/240-volt, 3Ø, 4-wire panelboard and the motor are ___ AWG.

4

Refer to the nameplate and information shown in Figure 230.131. The minimum size branch circuit conductors are ___ AWG.

8

Refer to the nameplate in Figure 230.127. The branch circuit for the motor is supplied from a 120/208-volt, 3Ø, 4-wire panelboard. What is the minimum size (3 wire + ground) SO cord that could be used as a flexible connection for the motor?

9

Refer to the nameplate shown in Figure 230.122. The branch circuit for the motor is supplied from a 120/240-volt, 3Ø, 4-wire panelboard. What is the minimum size (3 wire + ground) SO cord that could be used as a flexible connection for the motor?

9

Refer to the nameplate shown in Figure 230.127. The branch circuit for the motor is supplied from a 120/240-volt, 3Ø, 4-wire panelboard. What is the minimum size (3 wire + ground) SO cord that could be used as a flexible connection for the motor?

14

Refer to the nameplate shown in Figure 230.127. The branch circuit for the motor is supplied from a 277/480-volt, 3Ø, 4-wire panelboard. What is the minimum size (3 wire + ground) SO cord that could be used as a flexible connection for the motor?

4

Refer to the nameplate shown in Figure 230.128. The branch circuit for the motor is supplied from a 120/240-volt, 3Ø, 4-wire panelboard. What is the minimum size (3 wire + ground) STO cord that could be used as a flexible connection for the motor?

10

Refer to the nameplate shown in Figure 230.128. The branch circuit for the motor is supplied from a 277/480-volt, 3Ø, 4-wire panelboard. The minimum size branch circuit conductors for the motor are ___ AWG.

After calculating ampacity, where should you go to in the NEC®?

T.310.16

The current from ___ is used to determine the branch circuit conductor size for a 1Ø motor.

T.430.248

10

Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure. Refer to Figure 230.261. The smallest circuit conductors that can be installed between the wireway and the safety switch for Motor #3 are ___ AWG.

What should you use when selecting the size of motor branch circuits conductors based on voltage drop?

actual nameplate FLA