Grundfos SP Installation And Operating Instructions Manual page 15

6.7.1 Engine-driven generators
If the submersible pump is going to be operated
by an engine driven generator, we suggest that
you contact the manufacturer of the generator to
ensure the proper generator is selected and
used. See section 10.2 Guide for engine-driven
generators in submersible pump applications
generator sizing guide.
If power is going to be supplied through
transformers, section 10.3 Transformer capacity
required for three-phase submersible motors
outlines the minimum KVA rating and capacity
required for satisfactory pump operation.
6.7.2 Control box or panel wiring
Single-phase motors
Connect single-phase motors as indicated in the
motor control box.
A typical single-phase wiring diagram using a
Grundfos control box is shown in fig. 11.
CAUTION
Motor burnout protection via CUE,
Caution
CU331SP, or MP 204.
Use approved dry-run protection such
as with MP 204.
Control box
Fig. 11 Single-phase wiring diagram for Grundfos control boxes
for
Pressure
switch
Black
Use dotted line for
Yellow
115 V operation
Green
Red
Fused
disconnect
switch
Well seal
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