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The external protection cable with a gauge equal to that of the power supply phase cable must be connected. It is
therefore compulsory to connect the bolt or the ground terminal strip to the mains power supply grounding
system.
Check the efficiency of the customer’s pre-existing grounding system preventively.
Request the certification of the customer’s pre-existing grounding system preventively.
No other cables must be connected to the ground connection except the external protection cable.
5.1 CABLES
For the connection to the panel, the cables must be correctly sized based on the loads and the specific type of use.
The grade of insulation must be proportional to the applied voltages.
Use cables with adequate gauge based on the absorption of the various users adequately protected against surges.
Use cables that are flame retardant and with low toxic fumes emission in the event of a fire.
ATTENTION:
In case of fire, DO NOT use WATER, but the
specific extinguishers for live equipment
5.2 ELECTRICAL CHECKS PRIOR TO PROVIDING POWER
Recheck the correct correspondence of the connections made in the terminal strip, comparing them with the attached
diagram;
Recheck the tightness of the terminal strip screws;
Also recheck the tightness of the connections outside the panel in the various terminal strips: motor, valves, signals and
sensors
Check the correct operation of the external protection devices and the disconnect switches both upstream and
downstream of the panel and their correct connection;
Compulsory checks to be carried out:
- Protection circuit continuity
- Insulation resistance tests
- Voltage tests
- Protection against residual current
- Electromagnetic tests
- Functional tests
Note
It is the installer’s responsibility to issue the DECLARATION OF CONFORMITY relative
to the installation of the panel at the end of the work
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