ReferenceFormulasAppendix

Reference Formula Appendix

Substitution Algebra

Product Sum

Cross Multiplication

Proportion

Efficiency

kW kVA pf

Inductance in Series

Inductance in Parallel

Capacitance in Series

Capacitance in Parallel

Powers Roots

Derivations

Reference Formulas Appendix

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2005 NECŪ Reference Formulas Appendix 

The National Electrical Code folks are increasing the technical data contained in the code. But they still refuse to add formulas and tables which would make answering questions about electrical work easier. Further, they retain the desire that the book remain NOT a manual for untrained persons. So, very few aspects are included in the book to help an electrical instructor train beginning electricians. 

As a pragmatic blue collar worker and electrical instructor of over thirty years, I have brought together in this one booklet of mine, all the formulas that I wish were in the NEC. In addition, I have constructed tables which I feel belong in the code. These tables are of my own invention and derivation. At the back of this book I have included over 2000 unusual words all referenced to the 2005 NEC as a way to find answers to questions about the NEC content. I call it  Search Term Index.

None of the content has been submitted to the NFPA, nor has any of the detail been approved by the NFPA. I simply have taken what they have included and amplified that detail.

You may use this credit card or debit card button to order this item online. It is $25 postpaid to any USA address.

 

Partial Overview

-calculator technique is spelled out step-by-step for substitution algebra problem   solving.
-conversion formulas typically needed are included.
-nipple fill tables to 4 decimal places are found here.
-household cooking load feeder demand tables are expanded so that time-consuming calculations are unnecessary for most exam problems.
-ohms watts - series parallel circuit formulas are here.
-a single chart of how to determine wire size, breaker size, service feeder value and neutral is developed.
-alternating current formulas are given in great abundance.
-constants used in voltage drop are calculated and listed.
-transformer formulas for single phase and three phase are complete.
-unusual words not found in the code index or other word indexes are given alphabetically with reference.

Every page is punched for easy insertion in the looseleaf edition of the 2005 Edition of the NEC. To make reading easier, the pages are the same size, same layout, and similar type style to the NEC. The look just like what is included in the code. Finding answers is fast and easy.

This tool belongs in every NEC.


If you are an electrical engineer or design professional, may I suggest that the information contained in my Reference Formulas Appendix 2005 can be used as a general approximation of the actual requirements but you need to verify the contents of RFA through the means you typically use to make these calculations.

Many electrician workbooks and practice exams are now available 
as digital downloads for immediate use. 
Click HERE to see what is available.

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