Thermador PRO-HARMONYTM PRD30 - Manual (Page 17)

English 15
• 3-CONDUCTOR CORD — 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 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, prefer-ably soldered
in place.
Installer — show the owner the location of the circuit
breaker or fuse. Mark it for easy reference.
A 3- or 4-conductor supply may be connected to the
terminal block.
3-Wire Lead Connection
1. Remove upper nuts only from the terminal block studs.
Do not remove nuts which secure range internal
wiring leads.
2. Secure the neutral, grounded wire of the supply circuit,
to the center stud of the terminal block with nut. (See
Figure 13).
3. Secure the L1 (black) and L2 (red) power leads to the
outside terminal block studs (brass colored) with nuts.
4. Tighten nuts securely.
4-Wire Connection
1. Remove upper nuts only from the terminal block studs.
Do not remove lower nuts which secure range
internal wiring leads.
2. Remove ground strap screw and bend the strap up as
shown in Figure 14.
3. Secure the neutral wire to the center stud of the
terminal block with nut.
4. Secure the L1 (black) and L2 (red) power leads to the
outside terminal studs (brass colored) with nuts.
5. Secure the bare copper ground lead to the range
chassis using the ground screw previously used for the
ground strap. Be sure that neutral and ground
terminals do not touch.
6. Tighten all connections securely.
Figure 12: Conductor Securement
Upper Nut
Supply Wire
Flat Washer
Cupped Washer
Figure 13: 3 Wire Connection
Figure 14: Ground Strap
L2 Red
L1 Black
Neutral
White
Bend Ground Strap Up