Reference Formulas Appendix To The 2011 NEC -
Digital Delivery $5
This is a digital delivery item for immediate
download to your computer.
Published by ElectricianEducation
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 electrical work easier to do. 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
So as a pragmatic blue collar worker and electrical instructor of over
thirty years, I have brought together in one booklet, 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. 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
Here is a sample page:
-calculator technique is spelled out step-by-step for substitution algebra
-conversion formulas typically needed are included.
-nipple fill tables not in the NEC 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.
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.
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the number of times that you can open it. But the file may be removed any time
after 30 days without notice by the webmaster. If you have saved the file to
your computer, it will be available to you as long as your computer lives.
10. You get nothing in the mail. Delivery is exclusively digital through
your internet connection on your computer.
Use this Buy Now button to order. You may pay with any debit or credit card
Good luck as you work to prepare for your next electrical license exam.
David U. Larson