Middleby Marshall RED LOBSTER PS200-R68 Series, Operating And Installation Manual

Page: 26 / 88

20
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
Figure 2-12
Junction Connection Box
3/4" pipe for gas oven gas connection
or
1-1/4" hole for electrically heated oven
connection