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Identified |
(as applied to equipment). Recognizable as
suitable for the specific purpose, function, use, environment,
application, and so forth, where described in a particular Code
requirement.
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Impedance |
Forces which resist current flow in AC circuits,
i.e. resistance, inductive reactance, capacitive reactance.
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In Sight From |
Within Sight From, Within Sight). Where this
Code specifies that one equipment shall be “in sight from,”
“within sight from,” or “within sight,” and so forth, of
another equipment, the specified equipment is to be visible and
not more than 15 m (50 ft) distant from the other.
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Inductive Load |
An
inductive load is a load in which the current lags behind the
voltage across the load. (See Non-Inductive Load)
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Inductance |
The ability of a coil to store energy and oppose
changes in current flowing through it. A function of the cross
sectional area, number of turns of coil, length of coil and core
material.
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Induction
Motor |
An
alternating current motor, either single phase or polyphase,
comprising independent primary and secondary windings, in which
the secondary receives power from the primary by electromagnetic
induction.
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Input Power Frequency |
The frequency range that can be input into the
suppressor without damaging it.
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Instrument
Transformer |
A
transformer (current or potential) suitable for use with
measuring instruments; i.e., one in which the conditions of the
current, voltage and phase angle in the primary circuit are
represented with acceptable accuracy in the secondary circuit.
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Interrupting Rating |
The highest current at rated voltage that a
device is intended to interrupt under standard test conditions.
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Isolated |
(as applied to location). Not readily accessible
to persons unless special means for access are used.
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