Bosch HBL8753UC Installation Instructions - Page 11
Electrical Installation - Grounding Instructions
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Electrical Installation - Grounding Instructions The assembled combination oven should be moved in front of the cabinet opening and the power cable from the lower oven should be connected to the cabinet junction box. 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. Model HBL8463UC HBL8443UC HBL8453UC HBL8743UC HBL8753UC HBL87M53UC Circuit Required 208V, 60 Hz/ 240V, 60 Hz 30 AMP 208V, 60 Hz/ 240V, 60 Hz 40 AMP 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. Note: 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 eletrical supply wire. Electrical Connection The four-wire connection is preferred, but where local codes permit, the three wire connection is also acceptable. 9 WARNING When connected to a 4 or 5-wire, 120/208-Volt 3phase power supply, the phase C conductor is not required for the operation of the appliance. Four-wire Connection Ungrounded Neutral SRZHUVXSSO\ MXQFWLRQER[ UHGZLUHV EODFNZLUHV JUHHQRUEDUH ZLUH JUHHQZLUH 8/OLVWHG FRQQHFWRU ZKLWHZLUHV FDEOHIURP RYHQ ▯ 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 SRZHUVXSSO\ MXQFWLRQER[ UHGZLUHV EODFNZLUHV ZKLWHEDUHRU JUHHQZLUH ZKLWHZLUH JUHHQZLUH 8/OLVWHG FRQQHFWRU FDEOHIURP RYHQ ▯ 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 junction box. To maintain serviceability, the flex conduit must not be shortened and should be routed to permit temporary removal of the oven. 11