**Question 11**: A 150-horsepower motor is to be installed on a 480-volt three-phase line. What is the minimum size NEMA starter that should be used for this installation?**Question 12**: What is the minimum size IEC starter rated for the motor described in question 11?*Note to students*: When choosing the appropriate starter size for an electric motor installation, it is critical to refer to the National Electrical Manufacturers Association (NEMA) and International Electrotechnical Commission (IEC) standards to ensure safety and compatibility. - NEMA starters are commonly used in North America and are known for their durability and ease of use.- IEC starters are more commonly used internationally and are known for their compact size and efficiency.It is important to consult the appropriate tables or reference materials that list specifications for NEMA and IEC starters corresponding to the horsepower and voltage ratings of the motor. ### IEC Motor Starters (60 Hz)---This educational content outlines the specifications of IEC motor starters rated by size, maximum current (amps), motor voltage, and maximum horsepower for both single-phase and three-phase circuits. The detailed tabulation below will help in understanding the different parameters involved.#### Table of IEC Motor Starters**Column Explanation:**- **Size**: Denotes the specific size classification of the motor starter.- **Max Amps**: Indicates the maximum current in amperes that the starter can handle.- **Motor Voltage**: Provides the operating voltage needed for the motor.- **Max. Horsepower**: - **Single-Phase**: Specifies the maximum horsepower for single-phase motors. - **Three-Phase**: Specifies the maximum horsepower for three-phase motors.---**Table (First Half):**| Size | Max Amps | Motor Voltage | Max. Horsepower (Single-Phase) | Max. Horsepower (Three-Phase) ||------|----------|---------------|--------------------------------|------------------------------|| A | 7 | 115 | 1/4 | 1 1/2 || A | | 200 | | 2 || A | | 230 | | 3 || A | | 460 | | 5 || A | | 575 | | || B | 10 | 115 | 1/2 | 2 || B | | 200 | 1/2 | 3 || B | | 230 | 1 | 3 || B | | 460 | | 7 1/2 || B | | 575 | | 10 || C | 12 | 115 | 1/2 | 3 || C | | 200 | 2 | 5 || C | | 230 | 2 | 5 || C | | 460 | | 7 1/2 || C | | 575 | | 10 || D | 18 |

Since the NEMA starter size chart is not provided, the solution involving the IEC starter (whose…

11. A 150-horsepower motor is to be installed on a 480-volt three-phase line. What is the minimum size NEMA starter that should be used for this installation? 12. What is the minimum size IEC starter rated for the motor described in question 11?

11. A 150-horsepower motor is to be installed on a 480-volt three-phase line. What is the minimum size NEMA starter that should be used for this installation? 12. What is the minimum size IEC starter rated for the motor described in question 11?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

### IEC Motor Starters (60 Hz)

---

This educational content outlines the specifications of IEC motor starters rated by size, maximum current (amps), motor voltage, and maximum horsepower for both single-phase and three-phase circuits. The detailed tabulation below will help in understanding the different parameters involved.

#### Table of IEC Motor Starters

**Column Explanation:**
- **Size**: Denotes the specific size classification of the motor starter.
- **Max Amps**: Indicates the maximum current in amperes that the starter can handle.
- **Motor Voltage**: Provides the operating voltage needed for the motor.
- **Max. Horsepower**:
- **Single-Phase**: Specifies the maximum horsepower for single-phase motors.
- **Three-Phase**: Specifies the maximum horsepower for three-phase motors.

---

**Table (First Half):**

| Size | Max Amps | Motor Voltage | Max. Horsepower (Single-Phase) | Max. Horsepower (Three-Phase) |
|------|----------|---------------|--------------------------------|------------------------------|
| A | 7 | 115 | 1/4 | 1 1/2 |
| A | | 200 | | 2 |
| A | | 230 | | 3 |
| A | | 460 | | 5 |
| A | | 575 | | |
| B | 10 | 115 | 1/2 | 2 |
| B | | 200 | 1/2 | 3 |
| B | | 230 | 1 | 3 |
| B | | 460 | | 7 1/2 |
| B | | 575 | | 10 |
| C | 12 | 115 | 1/2 | 3 |
| C | | 200 | 2 | 5 |
| C | | 230 | 2 | 5 |
| C | | 460 | | 7 1/2 |
| C | | 575 | | 10 |
| D | 18 |

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