Grundfos MAGNA3 D Installation And Operating Instructions Manual page 14

4.10.1 Wiring diagrams
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GFCI
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Fig. 12 Example of a terminal-connected motor with main disconnect switch, backup fuse and additional protection
Fig. 13 Example of wire-to-wire-connected motor with main disconnect switch, backup fuse and additional protection
Ground fault circuit interrupter (GFCI)
WARNING
Electric shock
Death or serious personal injury
- Use a suitable type of GFCI capable of handling
ground fault currents with a DC content (pulsating
DC).
- If the pump is connected to an electrical
installation where a GFCI is used for additional
protection, this GFCI must be able to trip when
ground fault currents with DC content occur.
Make sure that the fuse is dimensioned according to
the nameplate and local legislation.
Connect all cables in accordance with local
regulations.
Make sure that all cables are heat-resistant up to
167 °F (75 °C).
Install all cables in accordance with the National
Electrical Code, or in Canada, the Canadian
Electrical Code, and state and local regulations.
14
External switch
Fuse
External switch
Fuse
GFCI