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2.2 Wiring and idraulic connection
Connection to the power mains
Connection to the power mains must be made according to the regulations in force.
Before making the connection, make sure mains voltage and frequency match the values on the oven's
rating plate, located at the bottom of the back side panel(Fig. 2).
A voltage variation of ± 10 % is allowed.
The oven must be connected to the power mains permanently using an heavy rubber not less
H05RN-F-type cable in neoprene with wires featuring a cross-section suitable for the maximum
power demand (see paragraph 1.3).
An omnipolar master switch must be placed between each oven and the mains, with at least a 3mm gap
between contacts: capacity must be suitable for the load, and it must feature devices protecting the
supply line.
Suitable automatic high-sensitivity ground fault interrupters must be installed to assure protection
against direct and indirect contact of live parts and fault currents towards earth according to the
regulations in force.
The maximum allowed leakage current is 1 mA/kW .
This switch must be installed in the permanent electrical system of the facility where the appliance is
installed, and in the immediate vicinity of the actual appliance where it can be reached easily by operators.
Check data in the specifications table for appropriate sizing of the supply line, master switch and cable.
(see paragraph 1.3).
To fasten the cable to the oven's terminal board, proceed as follows:
1) To connect the wires of the electric cable to the terminal board on the oven's back, like represented
in the next wire diagram. Make sure the yellow/green earth wire is approx. 3 cm longer than the other
four (three phases and blue neutral). This means that, if the cable is yanked inadvertently, it will be
the last wire to be pulled free, hence guarding against electric shocks;
2) Tighten the cable and close the cover's terminal board.
Mains' earth line
The appliance must be connected to the mains' earth line.
The yellow/green wire of the power cord must be fastened to the terminal marked
The oven must be included in an equipotential system. Connection must be made with a wire featuring
a cross-section of at least 10 mm connected to the terminal marked
oven.
Figure 2
2
19
located on the back of the
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