Bosch HBL8442UC Installation Instructions | Page 9

Bosch Ovens Installation Instructions - HBL8442UC.
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 English 5

Installation

This installation manual provides instructions for the 
installation of single ovens and double ovens.

Electrical Installation

All model ovens on the front cover of this installation 
instruction manual are dual rated, designed to be 
connected to either 208 or 240V AC, 60 Hz, 4 wire, single-
phase power supply.

The electrical supply should be a 4-wire single-phase AC. 
Install a suitable conduit box (not furnished). An 
appropriately-sized, UL-listed conduit connector must be 
used to correctly attach the conduit to the junction box.

Important: Local Codes may vary; installation, electrical 
connections and grounding must comply with all applicable 
local codes.

If local codes permit grounding through the electrical 
supply neutral, connect both the white neutral wire and the 
green ground wire from the oven to the white neutral 
electrical supply wire.

Electrical Connection to Main Power Supply

The four-wire connection is preferred, but where local 
codes permit, the three wire connection is also acceptable.

Four-wire Connection

Ungrounded Neutral

 

Connect the red oven wire to the red electrical supply
wire (hot wire).

Connect the black oven wire to the black electrical
supply wire (hot wire).

Connect the white neutral oven wire to the white
neutral (not bare or green ground) electrical supply
wire.

Connect the green ground oven wire to the bare or
green ground electrical supply wire.

Three-wire Connection

Grounded Neutral

Connect red wire from oven to red wire in junction box.

Connect black wire from oven to black wire in junction
box.

Connect both green ground wire and white wire from
oven to white, green or bare neutral wire in junction
box.

The conduit cable, where connected at the oven, swivels. 
Rotate conduit cable upward (or downward) and direct 
through hole prepared in cabinet to attach to the junction 
box.

To maintain serviceability, the flex conduit must not be 
shortened and should be routed to permit temporary 
removal of the oven.

Model

Circuit Required

208V, 60 Hz

240V, 60 Hz

HBN54, HBN84, 
HBL53, HBL54, 
HBL84, HBLP4

30 AMP

HBL55

30 AMP

40 AMP

HBN56, HBL56, 
HBN86, HBL86, 
HBLP6

40 AMP

power supply

junction box

red wires

green or bare

wire

green wire

UL listed

connector

black wires

white wires

cable from 
oven

power supply

junction box

red wires

white, bare, or

green wire

white wire

green wire

black wires

UL listed 
connector 

cable from 
oven

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