Ask anyone that has the "Key Word Index,"
the "Ultimate Code Book", Tom Henry DVDs or a Tom Henry Book if it
wasn't easier to understand.
Having over 64 years in the electrical trade as an apprentice,
journeyman, master, inspector, instructor of over 20,000 electricians,
during this journey Tom Henry has designed the "Exact K" formula for
voltage drop calculations, the "step-by-step book tabs" for service
sizing, "the household cooking equipment demand format," the "delta-wye
transformer 4 step formula," the "6-step motor formula," the
"unequal parallel solution with a calculator," etc. to make electrical
calculations easier for the electrician.
Tom Henry has decided to write this reference book for an electrician
to use on the job. Tom asked his son Tim to help provide answers to the
on-the-job daily questions. This electrical reference book is the
best reference book an electrician could ever possibly have, as it was
"written by an electrician for an electrician."
Now you will have a reference book to put in your pocket that will
explain whether the receptacle grounding pin is installed "up" or
"down." The minimum height of a paddle fan, the location of smoke
detectors, exit and emergency lights, rules for the drilling and
notching of studs, rafters and joists, when to pigtail a receptacle
wire, depth of conduit in a concrete slab. Plus you'll have all the
conduit, box fill, voltage drop, motors, transformer, wire sizing
tables, conduit bending charts, burial depths, service conductor
heights, etc.
And a walk through all the wiring dimensions required by the National
Electrical Code®.