Control Box/Panel Grounding - Grundfos SP Instrucciones De Instalación Y Funcionamiento

6.6.5 Control box/panel grounding

Warning
The control box or control panel
must be permanently grounded in
accordance with the National
Electrical Code and local codes or
regulations.
The ground wire should be a bare copper
conductor at least the same size as the
submersible drop cable wire size.
The ground wire should be run as short a
distance as possible and be securely fastened to
a true grounding point.
True grounding points are considered to be one
of the following:
• a grounding rod driven into the water strata
• a steel well casing submerged into the water
lower than the pump installation depth
• steel discharge pipes without insulating
couplings.
Electrical
discon-
nect box
Power
supply
Control
box
Fig. 15 Wiring and installation diagram
14
Pressure
switch
Conduit
connector
Submersible
drop cable
If plastic discharge pipe and well casing are
used or if a grounding wire is required by local
codes, connect a properly sized, bare copper
wire to a stud on the motor and run to the control
panel.
Warning
Do not ground to a gas supply line.
Connect the grounding wire to the
ground point first and then to the
terminal in the control box or
control panel.
Pressure
gauge
Pressure
tank
Well
seal
Tape
Pump
Motor
House
supply