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5. 3-Phase (3ø) Wiring Connections/Hookup
The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, L3, and
sometimes Neutral) and ground. Single-phase (1ø) power for the control circuit is done internally to the
dryer. No single-phase (1ø) input connection is required on a 3-phase (3ø) dryer.
IMPORTANT: A CIRCUIT SERVICING EACH DRYER MUST BE PROVIDED.
a. Gas Models and Steam Models ONLY
1) 3-Phase (3ø) Wiring Connections/Hookup
For gas and steam dryers manufactured for operation at
3-phase (3ø), the electrical connections are made at the
power distribution block located in the service box at the
rear, upper left corner of the dryer. The ground connection
is made to the copper lug also provided in this box. To
gain access to the service box and contactor, the service
box cover must be removed.
Providing local codes permit, power to a gas or steam
dryer can be made by the use of a flexible U.L. listed
power cord or pigtail (wire size must conform to rating
of dryer), or the dryer can be hard wired directly to the
service breaker panel. In ALL cases, a strain relief must
be installed where the wiring enters the dryer and service
box area.
b. Electric Dryers ONLY - 3-Phase (3ø) Hookup
The electrical input connection is made into the electric oven contactor located at the upper rear of the
dryer. Input connection wiring must be sized properly to handle the dryer’s current draw. This
information is printed on the dryer’s data label.