Thermador Pro Harmony PRD304GHU Installation Manual page 17

absence of local codes and ordinances, the power
supply connection shall be in accordance with the
National Electric Code.
• Observe all governing codes and ordinances when
grounding. In the absence of these codes or
ordinances observe National Electrical Code ANSI/
NFPA No. 70 current issue. See page 16 for grounding
method.
• Electrical wiring diagrams and schematics have been
placed in the toe kick area of the range for access by a
qualified service technician.
• The Dual Fuel Ranges may be connected to a 240/208
VAC power supply.
The range must be connected to the power supply utilizing
one of the following methods. For all methods of
connection, the length of the cord or conduit/wiring must
allow the unit to be slid completely out of the cabinet
without having to unplug or disconnect the unit from the
power supply. Recommended minimum free length of cord
or conduit is four feet. Electrical installations and grounding
must be in accordance with all local codes and ordinances,
and/or the National Electric Code, as applicable.
• 4-CONDUCTOR CORD — 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 10. Remove the ground strap
retaining screw and bend the ground strap up. Refer to
Figure 14. 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 13. 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 8.
A
Figure 10: Location of Junction Box on 30" and 36" Ranges
A
Figure 11: Location of Junction Box on 48" Ranges
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