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5. 3-Phase (3Ø) Wiring Connections
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
and for any single-phase (1Ø) motors (if present) is done
internally to the dryer. No single-phase (1Ø) input connection
is required on a 3-phase (3Ø) dryer.
a. GAS DRYERS ONLY - 3-Phase (3Ø) Hookup
For gas 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. To gain access to the service box and
contactor, the service box cover must be removed.
Providing local codes permit, power to the dryer can be
made by the use of a flexible U.L. listed cord/pigtail (wire
size must conform to the rating of the dryer), or the dryer
can be hard wired directly to the service breaker. In ALL
cases, a strain relief should be used both where the wiring
enters the dryer and the service box.
CAUTION: The dryer must be grounded. A ground lug has been provided in the service box for this
purpose.
NOTE: A separate circuit servicing each dryer must be provided.
The only electrical connections to the dryer are the 3-phase (3Ø) leads (L1, L2, L3, and sometimes
Neutral) and ground. Single-phase (1Ø) power for the control circuit is done by the factory at the
contactor (relay), and no other wiring connections are necessary.