Immergas MAGIS M4-30 Use And Installation page 80

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 speci cations and rmly connect the power cable. Make sure the cable is rmly secured
so that it is not yanked o 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 di erent diameters to the same power terminal (causing the wires to overheat due
to loose wiring) (See gure 9.2).
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 a ect 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. e 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.
appliance (A)
≤3
>3 and ≤6
>6 and ≤10
>10 and ≤16
>16 and ≤25
>25 and ≤32
>32 and ≤50
>50 and ≤63
Morsetto di cablaggio
circolare
Tubo di isolamento
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
: Cavo in rame
Collegamenti di alimentazione corretti
Figura 9.2
2
)
Cable for xed 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