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SECTION 2
INSTALLATION
17
III. ELECTRICAL CONNECTION
INFORMATION FOR PS536ES-SERIES
OVENS.
WARNING
Authorized supplier personnel normally accom-
plish the connections for the ventilation system,
electric supply, and gas supply, as arranged by
the customer. Following these connections, the
factory-authorized installer can perform the initial
startup of the oven.
Check the oven data plate (Figure 2-11) before making any
electric supply connections. Electric supply connections
must agree with data on the oven data plate.
NOTE: The electric supply installation must satisfy the
requirements of the appropriate statutory authority, such
as the National Electrical Code (NEC), ANSI/NFPA70,
(U.S.A.); the Canadian Electrical Code, CSA C22.2; the
Australian Code AG601; or other applicable regulations.
A fused disconnect switch or a main circuit breaker
(customer furnished) MUST be installed in the electric
supply line for each oven; it is recommended that this
switch/ circuit breaker have lockout/tagout capability. The
electric supply connection must meet all national and local
electrical code requirements. Copper is the recommended
material for the electrical supply conductors.
Figure 2-11. Typical Electric Oven Data Plate
IV. ELECTRIC SUPPLY FOR
ELECTRICALLY HEATED OVENS
Power requirements for electrically heated ovens are
usually 208 - 240VAC, 3-phase, 4-wire (3 ‘hot’, 1 ground),
although ovens built for export can have power require-
ments of 380VAC and 480VAC. (These ovens have a 5-
wire system.) A 2″ (51mm) diameter cutout/hole in the
back of the machinery compartment provides access for
the electrical supply connections. Using flexible cable(s)
for the electrical power supply conductors requires a 2″
(51mm) strain-relief fitting (not furnished) to enable safe
access to the terminal block from which oven power is
distributed.
The supply conductors must be of the size and material
(copper) recommended to provide the current required;
(refer to the data plate for the ampere specifications). The
electric current rating for each conductor supplying a
PS536ES-Series Oven must comply to local and national
codes.
Typical specifications for each PS536ES-Series Oven are
208V or 240V, 3-phase, 4-wire, 60-ampere, 17kW; this
oven requires 60-ampere service. A PS536ES-Series
Double Oven (Figure 1-2) installation would require two 60-
ampere service connections, one for each oven; the 17kW
power consumption also doubles for such an installation to
34kW.
The 208V or 240VAC electrically heated oven uses two
legs of the supplied power to provide 208V or 240VAC
power for the oven control circuitry.
Figure 2-12. Junction Connection Box