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Description / Abstract:
This Practice describes the requirements for installing circuits
for power and control to AC squirrel cage induction motors (600
volts and below, 60 hp maximum), located in Class I, Division 1
areas. This Practice tabularizes the basic assumptions used in
developing these details and provides guidelines for their
application.
The details in this Practice are arranged in the following major
groups:
a. Above grade circuits in conduit
b. Below grade circuits in conduit
Each major group contains details categorized as follows:
a. Combined power and control wiring in a common raceway
b. Separate raceways for power wiring and for control wiring
c. Power circuits only
d. Control circuits only
Installation details for the following areas are excluded from
the scope of this Practice:
a. Installation in Class I, Group A or Group B areas where
conduit fittings larger than 1-inch are required.
b. Installation in Class II areas.
Purpose
This Practice provides installation details for power and
control circuits to AC squirrel cage induction motors (600 volts
and below, 60 hp maximum), in Class I, Division 1 areas.