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5. 3-Phase (3ø) Wiring Connections and 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. 3-Phase (3ø) Wiring Connections and Hookup
For 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 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.