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Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09 13
6.5 Electrical connection
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death
due to electric shock!
• Electrical work must be carried out by a qualified electrician!
• Observe local regulations!
NOTICE
• Depending on the system impedance and the maximum connections/
hour of the connected consumers, voltage fluctuations and/or drops
may occur.
• When using shielded cables, attach the shielding to the earth rail on
one side of the switchgear!
• Always have connection carried out by a qualified electrician!
• Observe the installation and operating instructions for the connected
pumps and signal transmitters.
• The mains connection current and voltage must be as stated on the rating plate.
• Execute fuse protection on the mains side in accordance with the local guidelines.
• If circuit breakers are used, the switching characteristics should be selected according to
the connected pump.
• Follow local guidelines if residual-current devices (RCD, type A, sinusoidal current, uni-
versal-current-sensitive) are installed.
• Route connection cable in accordance with the local guidelines.
• Do not damage the connection cable during routing or installation.
• Earth the switchgear and all electrical consumers.
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