Electrical Wiring Handbook by Edward L. Safford
Book Details :
LanguageEnglish
Pages432
FormatPDF
Size121.35 MB


Electrical Wiring Handbook by Edward L. Safford



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Preface to Electrical Wiring Handbook

Every book is an adventure. As we begin our exciting journey through this one, we want to examine, analyze and discover everything pertaining to electricity as used in your home, condominium, or apartment.

Some ideas may even be appropriate for offices. There are some differences in the wiring requirements of commercial and residential buildings which will be discussed.

We will examine electrical wiring in detail. We want to know why it is done the way it is, as well as exactly how it is done by the professionals.

Our sources of information have got to be the best in the world. They are the master electricians who have put in long hours of study and years of apprenticeship before they became master electricians on their own.

They have to pass the most rigorous kind of professional examinations administered by the city in which they qualify for the journeyman's, or master electrician's license.

We also have to acknowledge another source of information for this work, that being the design engineers.

These men draw plans, figure loads, calculate wire sizes and determine fixture, box and switch sizes, and types and panels to be used in fusing.

These professionals have spent years in colleges and universities and are wizards upon graduation. Of course, the architects must be included among these professionals.

They must know about lighting, decor, rules and regulations and many other things if we are to have adequate, safe electrical power and lighting in our homes, condos, offices and workshops.

Finally, we must add that there is much in the way of personal experience contained in the following pages. Like every home owner, condo owner or apartment dweller, we have had our share of electrical expansion desires,

Required repairs, replacement of fixtures, renovations, replacement of switches, wall plugs and sockets, motor replacement in air conditioners, and almost everything else concerned with electricity around the house and shop.

We have had a whole world of problems with lighting and safety which we were able to solve. If we were to give you a single concept which we have found to be most important in doing electrical work, we would say it is to be "methodical".

There are rules which come from the regulations, and then there are "rules of thumb" which are used by all good electricians universally.

There are good and important reasons for these rules and methods. We must know and follow them to the letter if we want to insure safety, correct operation of whatever is being operated electricially, and,

Finally, ultimate satisfaction with the knowledge of a job professionally well done.

First we will examine the basic types of circuits used, what electricity is composed of and how to handle it, some information on wires and how to get electricity to "flow" where it should and not flow where it shouldn't.

We need to understand insulation-the types and when to use what type. Some ideas on tools to be used will be of value. As we progress on our journey through this book we will encounter more advanced concepts, ideas and situations.

We hasten to add at this point, however, that if you are an experienced veteran in the use of electricity or electronics, you might want to briefly scan the earlier chapters and proceed to the more adventurous ones.

When we said it is necessary to be methodical, we mean in checking to see if power is off, making the right kind of wire connections every time, using the proper precautions on safety and rigorously observing them,

using the right kind of joint connection insulating devices or material and doing it properly (not quickly) when sealing an electrical joint, and so on. Never take for granted anything about electricity.

Be methodical, systematic and certain. It may save your life. From time to time in the following pages, we will include a little bit of that mysterious element called theory.

If we can get through it easily and painlessly, it will make our understanding of the why we do things as we do more perfect. Also, in some cases,

we just cannot begin to understand how some devices work unless we can relate a bit of theory to their operation. While reading this book, you might consult books which is appropriate to our subject;

Electrical Wiring and Lighting For Home and Office (TAB book No. 67l). It could be a useful supplement. Now let us begin this adventure.