American Dryer Corp. AD-75 - Manual (Page 26)

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3. GROUNDING
A ground (earth) connection must be provided and installed in accordance with state and local
codes. In the absence of these codes, grounding must conform to applicable requirements of the
National Electric Code ANSI/NFPA NO. 70-LATEST EDITION. The ground connection may be
to a proven earth ground at the location service panel.
For added personal safety, when possible, it is suggested that a separate ground wire (no. 18
minimum) be connected from the ground connection of the dryer to a grounded cold water pipe.
DO NOT ground to a gas pipe or hot water pipe. The grounded cold water pipe must have metal
to metal connection all the way to the electrical ground. If there are any non-metallic
interruptions, such as, a meter, pump, plastic, rubber, or other insulating connectors, they must be
jumped out with no. 4 copper wire and securely clamped to bare metal at both ends.
IMPORTANT: For personal safety and proper operation, the dryer must be grounded.
Provisions are made for ground connection in each dryer at the electrical service connection area.
4. ELECTRICAL CONNECTIONS
NOTE: A wire diagram is located in the front electrical control box for connection data.
a. Gas and Steam Models Only
NOTE: A CIRCUIT SERVING EACH DRYER MUST BE PROVIDED.
1) Single Phase (1Ø) Wiring Connections (Hookup)
The electrical connections on ALL Single-phase (1 Ø) gas and steam dryers are made into
the rear service box located at the upper left area of the dryer.