Thermador PRD30 Installation Manual page 16

NFPA No.70current i ssue. S eethefollowing
information i nthissection (Step 6)forgrounding
method.
• Electrical wiringdiagrams a ndschematics a reattached
behind thetoekickpanel o ftherange foraccess bya
qualified service technician.
• Theranges areto beconnected t o a 240/208 VAC
power supply.
DualFuelmodels mustbeconnected t othepower s upply
utilizing oneofthefollowing methods. Forallmethods o f
connection, thelength ofthecordor conduit/wiring must
allowtheunittobeslidcompletely outofthecabinet
without h aving to unplug or disconnect theunitfromthe
power supply. R ecommended minimum freelength of cord
orconduit i sfourfeet.Electrical installations andgrounding
mustbeinaccordance withalllocal c odesandordinances,
and/or t heNational Electric Code, a s applicable.
4-CONDUCTOR CORD m NORMALLY, A UNIT
MUST BE CONNECTED TO THE POWER SUPPLY
WITH A 3-POLE, 4-CONDUCTOR CORD KIT RATED
125/250 VOLTS, 50 AMPERES, AND MARKED FOR
USE WITH RANGES. The cord kit must be attached to
the range junction box with a strain relief which will fit a
1" diameter hole. If not already equipped, the cord
must have 1/4" faston closed-loop lugs attached to the
free ends of the individual conductors, preferably
soldered in place.
PERMANENT CONNECTION (HARD WIRING) --
Units may be hard wired to the power supply. The
installer must provide approved flexible aluminum
conduit, 3/4" trade size, maximum 6 feet long. Locate
the junction box on the rear of the unit and remove
cover. Refer to Figure 9a or Figure 9b, depending upon
the range model. Remove the ground strap retaining
screw and bend the ground strap up. Refer to
Figure 10. The conduit must be installed to the junction
box using an approved conduit connector.
Wiring for the unit is to be brought into the junction box
through the conduit. The ends of the wiring must have
1/4" faston closed-loop lugs attached, preferably
soldered in place. Make the connections to the terminal
block provided. Secure the ground lead to the junction
box with the screw previously used to secure the
ground strap. Refer to Figure 12. The free end of the
conduit must be connected to a junction box provided
in the gas and electrical supply zone, as shown in
Figure 3a on page 7.
If aluminum supply wiring exists in the installation, splice
the aluminum house wiring with appropriate-thickness
gauge copper wire for adapting to the range, using special
connectors designed and certified for joining copper and
aluminum wire. Follow the connector manufacturer's
recommended installation procedure.
WARNING:
Improper connection of aluminum house wiring
can result in a fire or shock hazard. Use only
connectors designed and certified for
connecting to aluminum wire.
Figure 9a: Location of Junction Box on 30" and 36" Ranges
English 14