Electrical Connection; Wiring The Pump - Grundfos ALPHA Installation And Operating Instructions Manual

7. Electrical connection

WARNING
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
WARNING
Electric shock
Death or serious personal injury
‐
Connect the product only to a properly grounded
receptacle. See owner's manual.
WARNING
Electric shock
Death or serious personal injury
‐
All electrical connections must be carried out by a
qualified electrician in accordance with local
regulations.
WARNING
Electric shock
Death or serious personal injury
‐
Use of the product on a circuit equipment with a GFCI
can cause improper operation of the GFCI. Consult an
electrician and observe all national, state and local
electrical regulations, as applicable.
• The pump is electronically protected and therefore requires no
external motor protection.
• Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
• Connect the pump to the power supply with the power
connector supplied with the pump.
Related information
3.4.1 Nameplate

7.1 Wiring the pump

Note that the conduit connector and conduit are not supplied by
Grundfos.
Follow the steps below to wire the pump:
1. Remove the lid from the conduit box, attach the conduit
connector to the knockout opening and tighten the connector
nut.
Use only a flexible conduit.
2. Take the power connector and lift the orange levers, and
connect the black wire to L (phase), the white wire to N
(neutral), and the green wire to
The power connector can be fitted with AWG 20 -
AWG 12 wires.
3. Press the orange levers down to tighten the wires.
4. Insert the power connector.
5. Mount the cover on the conduit box.
Related information
5.2 Optimal installation and operation
11.1.1 Disconnecting the wires
(ground).
11