Immergas MAGIS M4-30 Use And Installation page 80

9.7.3 Precautions for electric power wiring.
When connecting the power terminal, use the ring cable lug with insulation enclosure (See Figure 9.1).
Use a power cable compliant with specifications and firmly connect the power cable. Make sure the cable is firmly secured
so that it is not yanked off by an outside force.
If it is not possible to use the ring cable lug with insulation enclosure, make sure:
• Not to connect two power cables with different diameters to the same power terminal (causing the wires to overheat due
to loose wiring) (See figure 9.2).
Figure 9.1
Figura 9.1
• Use the correct screwdriver to tighten the terminal screws. Small screwdrivers could damage the screw head and prevent
them from being properly tightened.
• Overtightening the terminal screws could damage them.
• Connect an earth leakage circuit breaker and a fuse to the power line.
• In the wiring, make sure that the required wires are used, perform the complete connections and secure the wires so that
no external force can affect the terminals.
9.7.4 Safety device requirements.
1. Select the cable diameters (minimum value) individually for each unit based on the table. If the rated current exceeds
63A, the diameters of the wires must be selected based on national regulations on wiring.
2. The maximum admissible variation of the phase to phase voltage range is 2%.
3. Select the circuit breaker with separation of contacts in all poles no lower than 3 mm to allow complete disconnection.
Rated current of the
appliance (A)
≤3
>3 and ≤6
>6 and ≤10
>10 and ≤16
>16 and ≤25
>25 and ≤32
>32 and ≤50
>50 and ≤63
Ring cable lug
Morsetto di cablaggio
circolare
Insulation tube
Tubo di isolamento
Power cable
Cavo di
alimentazione
Rated cross section area (mm
Flexible cables
0.5 and 0.75
0.75 and 1
1 and 1.5
1.5 and 2.5
2.5 and 4
4 and 6
6 and 10
10 and 16
80
Correct power supply connections
Collegamenti di alimentazione corretti
Figure 9.2
Figura 9.2
2 )
Cable for fixed wiring
1 and 2.5
1 and 2.5
1 and 2.5
1.5 and 4
2.5 and 6
4 and 10
6 and 16
10 and 25
Copper wire
: Cavo in rame