These modules are for a person taking
their first electrical exam and
for the electrician that didn’t pass exam by just a very few points.
When working calculations one must attack their weakness in order to
pass an exam.
Over the years I have tutored
students one on one to strengthen their weakness. I have written these
modules so you can tutor yourself on your weakness with perfect
practice. Proven learning methods. The
perfect private tutor designed for you by Tom Henry.
Practice doesn’t make perfect. Perfect Practice
makes Perfect! What “perfect” practice really means, mistakes aren’t
the problem. The problem is not taking the time to articulate the
specifics of the mistake, the cause of the mistake, and the potential
solutions, so you can avoid making
that same mistake over and over. These modules will fully
check you on this!
could say that the phrase study smarter is similar to the phrase study efficiently.
The more effective you are in studying, more will get done and less
time is wasted. Before you can go about changing this and becoming a
more efficient student you need to
be aware of your current effectiveness.
Find your weakness, this has to be measured before we can improve it,
the reason is fairly obvious. If you do not know where you stand, how
will you know how far you’ve gone?
for “Perfect - Practice - Pass”
is reading the question looking for the key words,
branch circuit, neutral, equal sizes, unequal sizes, school kitchen,
school classroom, single-phase on three-phase.
If an appliance will fit in more than one column,
always compare the columns and select the smallest kW
today with “Perfect - Practice - Pass”
The National Electrical Code
Equipment Demand Factors
A troublesome area for the electrician working maintenance
or in the oil fields.
Now comes the key word
“HOUSEHOLD” an area many electricians
have not worked in.
#992 Cooking Equipment Demand Factors.....................$16.00
I can always relate to the lady
that was a secretary for an electrical contractor
and had never connected
an electrical wire.
She attended my prep class for Journeyman license and scored
first try, Two years later I begged her to attend class and
the Master exam, in which she scored 76% first try.
Back in 1984 there was a county in Florida where you could
the exam without showing any work in the field.
She proved my point, you weren’t tested on how to connect a
you are tested on how well you can read a question
words and operate a calculator!
#993 Dwelling Calculations.....................$16.00
THAN A DWELLING" Learn the correct way to size the service
demand to a
bank, restaurant, school, office, motel, hospital, farm, etc. Apply all
the demand factors from the Code Tables.
Section 220.40 states: The
calculated load of a feeder or service shall not be less than the sum
of the loads on the branch circuits supplied, as determined in Part II
of Articel 220.
It is not permissible to assume any demand factor that would result in
a calculated load that is less than the Code-prescribed minimum from
Table 220.12. Providing capacity for less than the Code-prescribed
minimum represents poor design and is a violation of
#995 Commercial Calculations.....................$16.00
shall be of sufficient size to provide free space for all enclosed
conductors. In no case shall the volume of the box be less than the
fill calculation. Providing capacity for less than the Code-prescribed
minimum represents poor design and is a violation of the NEC. This
Module will show how to calculate the maximum number of
wires the Code
allows in a box or conduit.Limiting the number of wires and circuits in
a single enclosure will minimize the effects from a short-circuit or
ground fault in one circuit.
#997 Box and Conduit Fill Calculations.....................$16.00
#998 THE QUAD ALL 4
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