Middleby Marshall PS200-R68 Section Installation, Figure Junction Connection Box

SECTION 2

INSTALLATION

VIII. ELECTRIC SUPPLY FOR ELECTRICALLY HEATED OVENS

Electrically heated ovens are available in 208 or 240 volts, 5 wire, 3 phase only. They are pre-wired at the factory and only one common connection is necessary.

A standard oven is a 5 wire system (3 hot, 1 neut, 1 grd), it will not have a stepdown transformer. The neutral wire is combined with one 208-240 VAC, 3 phase leg to provide a 110V control circuit.

If the oven was special ordered for a 4 wire system, it will use a stepdown transformer for the 110V control circuit.

A 1-1/4" cutout is supplied on the rear of oven control box for the electrical connection. A 1-1/4" strain relief fitting must be used if flexible cable is used to run electrical supply.

Be sure wire size is adequate to handle amperage draw listed on data tag. Use Copper Wire Only.

Minimum Supply Conductor ampacity -- 95 Amps Per Unit.

Maximum Supply Circuit protective

device -- 100 Amps Per Unit

Normal electrical requirements are as follows:

PS200 Series Single - 208-240V, 3 phase, 5 wire, 27kw, 100 amp service.

PS200 Series Double Oven - 208-240, 3 phase, 5 wire, 54 kw, 2 separate 100 amp services, one for each oven.

FOR OTHER SERVICES CONSULT FACTORY.

Electrical

Junction

Cover Plate

3/4" pipe for gas oven gas connection

or

1-1/4" hole for electrically heated oven

connection

Figure 2-12

Junction Connection Box

20