THINGS YOU SHOULD KNOW BY
NOW AS AN APPRENTICE LINEMAN
EXAM
Polarity - Correct Answers -The direction of current flow from the primary coil to the
secondary
What constitutes a subtractive polarity - Correct Answers -Any Tranz with a primary
voltage of 8660v & above or rated over 200kva
In our 7200v/12470v system what do we normally fuse the line & laterals at - Correct
Answers -Line-140a, laterals 80a
ELI - Correct Answers -Voltage leads current (inductive reactance)
ICE(man) - Correct Answers -Current leads voltage (capacitive reactance)
Symbols for inductive reactance & capacitive reactance - Correct Answers -Xl,Xc
Impedance - Correct Answers -All forces which resist current flow in an AC circuit.
(Total opposition) Symbol- Z
PT - Correct Answers -A potential transformer that is designed to reduce voltage so that
it can be used or metered at a much lower level
KVAR - Correct Answers -TheMeasure of additional reactive current flow which occurs
when the voltage and current flow are not perfectly in phase
Nominal voltage - Correct Answers -a nominal value assigned to a circuit or system for
the purpose of conveniently designating it's voltage class
A nonlinear device to limit the amplitude of voltage on a power line. - Correct Answers -
Arrestor
The property of a capacitor that determines the quantity of electric energy that can be
stored. - Correct Answers -Capacitance
symbol- C
True power. (Kilowatt hour) - Correct Answers -KWH
