3

3. ELECTRICAL GROUNDING 

INSTRUCTIONS

This appliance must be grounded. This oven is equipped 

with a cord having a grounding wire with a ground-ing 

plug. It must be plugged into a wall receptacle that is 

properly installed and grounded in accordance with the 

National Electrical Code and local codes and ordinanc-

es. In the event of an electrical short circuit, ground-ing 

reduces risk of electric shock by providing an escape 

wire for the electric current.
WARNING - Improper use of the grounding plug can 

result in a risk of electric shock.
The oven is equipped with a 3-prong grounding plug. 

DO NOT UNDER ANY CIRCUMSTANCES CUT OR 

REMOVE THE GROUNDING PIN FROM THE PLUG.
The Power Supply Cord and plug must be connected to 

a separate 120 Volt AC, 60 Hz, 15 Amp, or more branch 

circuit, single grounded receptacle. The receptacle 

should be located inside the cabinet directly above the 

Microwave Oven/Hood mounting location.
Note:
1. If you have any questions about the grounding or 

electrical instructions, consult a qualified electrician 

or serviceperson.

2. Neither SMEG nor the dealer can accept any liability 

for damage to the oven or personal injury resulting 

from failure to observe the correct electrical connection 

procedures.

Ground

Receptacle  

Opening for

Power Cord

Figure 3

4. HOOD EXHAUST DUCT

When the hood is vented to the outside, a hood exhaust 

duct is required. All ductwork must be metal; absolutely 

do not use plastic duct. Check that all connections are 

made securely. Please read the following carefully: 
EXHAUST CONNECTION: The hood exhaust has been 

designed to connect to a standard 31/4” x 10” rectangular 

duct. If round duct is required, a rectangular-to-round 

adapter must be used.
REAR EXHAUST: If a rear or horizontal exhaust is to 

be used, care should be taken to align the exhaust with 

the space between the studs, or wall should be prepared 

at the time it is constructed by leaving enough space 

between wall studs to accommodate exhaust.
MAXIMUM DUCT LENGTH: For satisfactory air move-

ment, the total duct length of 31/4” x 10” rectangular or 

6” diameter round duct should not exceed 140 feet.
Elbows, adapters, wall, roof caps, etc. present addi-tional 

resistance to air flow and are equivalent to a section of 

straight duct which is longer than their actual physical 

size. When calculating the total length, add the equivalent 

lengths of all transitions and adapters plus the length of 

all straight duct sections. Figure 4 shows the approximate 

feet of equivalent length of some typical ductwork parts. 

Use the values in parentheses for calculating air flow re-

sistance equivalent, which should total less than 140 feet.

90˚ ELBOW (10 FT.)

45˚ ELBOW (5 FT.)

ADAPTOR (5 FT.)

10˚ WIDE ELBOW (10 FT.)

90˚ ELBOW (25 FT.)

45˚ ELBOW (5 FT.)

WALL CAP (40 FT.)

ROOF CAP (24 FT.)

Figure 4