Thermador PRD304GHC Installation Manual page 20

3-Wire Lead Connection
Where local codes and ordinances permit grounding
through neutral, and conversion of supply to 4 wire is
impractical, unit may be connected to the power supply
with a 3-POLE, 3-CONDUCTOR cord kit rated 125/250
VOLTS, 50 AMPERES, and marked for use with ranges.
The cord kit must be attached to the range back panel with
a strain relief which will fit a 1" (25.4 mm) diameter hole. If
not already equipped, the cord must also have 1/4" (6 mm)
faston closed-loop lugs attached to the free ends of the
individual conductors, preferably soldered in place.
1. Locate the terminal block on the rear of the unit and
remove cover.
2. Remove upper nuts only from the terminal block studs.
Do not remove nuts which secure range internal wiring
leads.
3. Mount strain relief (not provided with range) into the 1"
(25.4 mm) diameter hole in the back panel located
below the terminal block (see Figure 13). Route wires
up through strain relief.
Figure 13: Strain Relief Location
4. Secure the neutral, grounded wire of the supply circuit,
to the center stud (silver colored) of the terminal block
(see Figure 14).
5. Secure the L1 (red) and L2 (black) power leads to the
outside corresponding terminal block studs (brass
colored).
6. Secure one end of the mounted looped neutral wire,
located beneath terminal block, to the center stud of
the terminal block with nut and keep the other end of
the wire screwed into the back of the range.
7. Tighten nuts securely.
8. Reinstall the Terminal Block Cover.
INSTALLER — show the owner the location of the circuit
breaker. Mark it for easy reference.
Figure 14: 3-Wire Connection
English 17