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Ugly's Electrical Guide,
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This review is from: Ugly's Electrical References, 2011 Edition (Spiral-bound)
Ugly's Electrical References 2011 Edition
The pocketbook is handy and has a reasonable price. I bought it as a curiosity on content and value.
First, the pocketbook includes 50+ pages with tables and data from NEC 2011 Edition. Contrary to other reviewer(s) comments who stated that pocketbook contains all the latest requirements from the NEC, or the pocketbook is a small version of the NEC 2011, it is inaccurate and an impossible task to accomplish in a little pocketbook; the editor confirms this in book introduction.
The NEC is a much more complex document for an electrical engineer or an electrician. Take for example NEC Article 250-Bonding and Grounding. To cover all the requirements you need to write books and books on this complex and often least understood requirement in the electrical field.
As a Professional Electrical Engineer whether working in the field or at my office I use at my desk 2011 Edition of the NEC, and, Illustrated Version of the 2011 NEC by Charles Miller as a reference information.
My decisions involving electrical design and installations are done considering NEC itself cross-referenced article requirements, not just from a list of tables or data. For example,if I need to run three-phase multiconductors (more than 3 conductors) in a hot temperature environment raceway of a given load, known insulation (i.e.,THNN) and terminations rated for 75 degrees Celsius conductors, I must follow an NEC sequential procedure; (1) Determine the minimum overcurrent device(OCD)for the circuit by Article 220.20(A) rule: OCD rating not less than 125% of continuous load plus noncontinuous load. Say, I find to be a 60 Amperes OCD; (2) Find minimum size conductor with no adjustments and no correction factors by rule of Article 220.19(A). This is 125% of continuous load plus the continuous load. Say,I find conductors have an allowable ampacity of 60A;(3)With known conductors temperature rating of 75 degrees Celsius and NEC Table 310.15(B)(16) I find minimum conductor size, say 6 AWG copper;(4)I then apply the correction factors of temperature and number of conductors in a raceway by NEC Table 310.15(B)(2)(a) based on 30 degrees Celsius or Table 310.15(B)(2)(b) based on 40 degrees Celsius , and by Table 310.15(3)adjustment factors for number of conductors. I start with conductors size(i.e.,6 AWG) to find the allowable ampacity from Table 310.15(16) 90 degrees column. This current value multiplied by the correction factors will get the adjusted allowable ampacity. Should this corrected Amperes value be less than the known load value, I would then try the next larger size conductor, say 4 AWG copper THNN. Use of rule of Article 240.4(B)requirements would verify that new conductor size is correct, and, NEC Article 240.6(A) will confirm correct circuit breaker rating. I then meet NEC requirements.
Because authors touched key NEC requirements I was wondering why they left out NEC Article 210.8 by which electricians, contractors or engineers work in dwelling and commercial installations. NEC Article 210.8 deals with Ground-Fault Circuit Interrupter(GFCI)Protection for Personnel for electrical installations in bathrooms, bedrooms, kitchens, garages, etc. The article is fundamental for electricians and contractors because it deals with protection of human lives. There are some simple circuits to show to remind electricians of this critical installation. Authors may argue they cannot put everything in the pocketbook; however they spent time on NEC Article 220-Branch Circuit, Feeder and Services calculations for dwellings and commercial installations. In my opinion, NEC Article 210.8 is equally critical. Besides, they could have saved space in the pocketbook by elimination of pages like natural trigonometric functions. Presently, in any facility, electricians, engineers, installers, and maintenance people use calculators. It is easy, accurate and fast.
On page 69 of the pocketbook, the authors titled Miscellaneous Wiring Diagrams for two-three-way switch circuits. I believe that no electrician will do a dwelling or commercial installations with these "schematics". There are several ways how you wire and switch power to a fixture(s) using two-three way switches (ex, fixture controlled by two switches, power through a switch box; fixture controlled by two switches, power through light,etc).An electrician would properly install the circuit using conventional wiring color codes: white (neutral), black (hot), red (traveler or switch),and, green(ground).I would show a typical wiring diagram with that information.
The general equations of different electrical circuits and diagrams are good and you can find them in one place with the pocketbook.
The electrical single phase and three-phase diagrams are good and it is something that electricians in refineries, chemical plants or power plants find useful to apply. I was surprised that since authors went through many electrical circuits, they forgot to include a three-phase reversed power operated equipment. In above facilities, reverse motor-operated valves (MOVs) make one of the highest percentage of installed equipment at a site.For example in refineries, huge MOVs play a key function in plant safety.
A minor comment on page 115 equation to determine Hours should be:
Hours = Lamp Cost ($) X 1000 /Watts Saved X ($)/KWHR
In this way the values will match for cost unit.
In summary, I would use the pocketbook for information on general electrical power equations and electrical circuits as a general guide document, but not for design/installations of electrical equipment that should meet NEC 2011 requirements.
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Showing 1-2 of 2 posts in this discussion
Initial post: Apr 30, 2012 3:27:10 PM PDT
A. Sempronio says:
In reply to an earlier post on Apr 30, 2012 10:08:29 PM PDT
Last edited by the author on Apr 30, 2012 10:27:57 PM PDT
Joseph J. Lisboa says:
I don't know what he means, but he uses filthy foreign language in Amazon.com. If he is an engineer talk to me like that and challenge my education/experience. The bottom line, the little book is not so great as several reviewers state. I would love the authors/editors to question the accuracy of my review and I can go item by item with them. The bottom line, the NEC is the bible for engineers and technicians, and as such it should be used for all design work or for a new engineer taking his(her) Professional Electrical Engineering License, the NEC is the key document to pass the exam, provided that person understands the Code and its applications. For example, if he(she) does not understand use, application, and design using Bonding vs Grounding (NEC Art 250), then he (she) is lost, and the little book won't help too much.
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