Electrical Layout and Estimate 2nd Edition By Max B. Fajardo Jr. , Leo R. Fajardo.pdf: A Comprehensive and Practical Guide for Electrical Engineering

Electrical Layout and Estimate 2nd Edition By Max B. Fajardo Jr. , Leo R. Fajardo.pdf

Introduction

Electricity is a necessity in human's daily activity. From the simplest household to the more elaborate dwellings, from complete offices to even the most sophisticated buildings, electricity is a basic need for human comfort. However, electricity also requires careful planning, design, installation, and maintenance to ensure its safety, efficiency, and reliability.

Electrical Layout and Estimate 2nd Edition By Max B. Fajardo Jr. , Leo R. Fajardo.pdf

That's where electrical layout and estimate comes in. Electrical layout and estimate is the art and science of designing and calculating the electrical circuitry and distribution lines for various types of buildings and structures. It involves selecting the appropriate electrical materials, devices, and equipment; determining the optimal locations, sizes, and capacities of the electrical components; estimating the cost and quantity of the electrical materials; and installing, testing, and commissioning the electrical system.

If you are an engineering student, a master electrician, a lineman, or anyone interested in learning more about electrical layout and estimate, then this book is for you. Electrical Layout and Estimate 2nd Edition by Max B. Fajardo Jr. , Leo R. Fajardo.pdf is a comprehensive and practical guide that covers the basic principles, methods, examples, and tips for electrical layout and estimate.

In this article, we will give you an overview of what this book has to offer, what are its main features, and what are the benefits of reading it. We will also provide you with a summary of each chapter, so you can get a glimpse of what you can learn from this book.

Chapter overview

Chapter 1: Electrical Materials

The first chapter of the book introduces you to the various types of electrical materials that are used in electrical layout and estimate. These include wires, cables, conduits, fittings, boxes, switches, receptacles, outlets, lamps, fixtures, circuit breakers, fuses, transformers, motors, generators, meters, panels, boards, and other accessories.

The chapter also explains the specifications and standards of electrical materials that you need to follow when selecting them for your project. These include the Philippine Electrical Code (PEC), the National Electrical Code (NEC), the International Electrotechnical Commission (IEC), and other relevant codes and regulations.

Finally, the chapter teaches you how to estimate the cost of electrical materials using different methods such as unit price method, percentage method, lump sum method, and detailed method. The chapter also provides you with tables of technical data for easy reference.

Types of electrical materials

Electrical materials are classified into two main categories: conductors and non-conductors. Conductors are materials that allow electric current to flow through them easily. Non-conductors are materials that resist or prevent electric current from flowing through them.

Some examples of conductors are copper, aluminum, iron, steel, brass, bronze, and silver. Some examples of non-conductors are rubber, plastic, glass, ceramic, wood, and paper.

Electrical materials are also classified according to their functions and applications. For example, wires and cables are used to transmit electric power from the source to the load. Conduits and fittings are used to protect and support the wires and cables. Boxes and switches are used to control and distribute the electric power. Receptacles and outlets are used to provide access to the electric power. Lamps and fixtures are used to provide illumination. Circuit breakers and fuses are used to protect the electrical system from overloads and short circuits. Transformers and motors are used to convert electric power from one voltage or frequency to another. Generators and meters are used to measure and monitor the electric power. Panels and boards are used to organize and coordinate the electrical components.

Specifications and standards of electrical materials

When selecting electrical materials for your project, you need to consider their specifications and standards. Specifications are the technical details that describe the characteristics, features, performance, quality, and requirements of electrical materials. Standards are the rules, guidelines, criteria, or norms that define the minimum acceptable level of specifications for electrical materials.

Specifications and standards of electrical materials are established by various authorities and organizations that regulate the electrical industry. These include the Philippine Electrical Code (PEC), the National Electrical Code (NEC), the International Electrotechnical Commission (IEC), and other relevant codes and regulations.

The PEC is the official code of practice for electrical installations in the Philippines. It is based on the NEC, which is the most widely adopted code of practice for electrical installations in the United States. The IEC is an international organization that develops and publishes standards for electrical and electronic technologies.

Some of the specifications and standards that you need to follow when selecting electrical materials are:

• The size, type, rating, capacity, insulation, color coding, labeling, marking, testing, and certification of wires and cables.

• The size, type, material, thickness, coating, bending radius, coupling, support, grounding, bonding, and installation of conduits and fittings.

• The size, type, material, shape, cover, knockout, grounding, bonding, mounting, spacing, location, and installation of boxes.

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