Bosch HBL3350UC Quick Setup Guide

English 12

All model ovens on the front cover are dual rated, designed 
to be connected to either 208/240V 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 
bare ground wire from the oven to the white neutral 
electrical supply wire.

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

•

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 ground) electrical supply wire.

•

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

•

Connect red wire from oven to red wire injunction box.

•

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

•

Connect both green ground wire and white wire from 
oven to white (or gray) 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 J-Box.

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

HBL33, HBN34, 
HBL34

25 AMP

30 AMP

HBN54, HBL54
HBL84

30 AMP

HBN35, HBL35

40 AMP

HBN56, HBL56,
HBL8650,

30 AMP

40 AMP

HBL57, 
HBL8750

50 AMP