Grundfos UPS 26-150, Инструкция по установке и эксплуатации

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English (US)
5.3 Electrical connection
Proper operating voltage and other electrical
information can be found on the pump
nameplate attached to the top of the motor.
• The motor is thermally protected on all three
speeds and no additional external protection
is needed.
• See fig. 3 for proper grounding and supply
power connection locations (115 V and
208-230 V).
• The terminal connections are toggle/lever
push design. Push the lever down and insert
the field wiring. Push the lever down and pull
to remove wires.
• Next, use care when installing the terminal
box cover with speed switch. Insert the
Phillips head screw through the cover and
tighten to a snug fit.
• An external "Drip Loop" is recommended in
the electrical wiring harness; see fig.
2 .
• Where an external "Drip Loop" is not
possible, or if the wiring enters through the
upward facing (top) surface of the box, then
an internal "Drip Loop" is recommended; see
fig.
3 .
Fig. 3 Examples of ground and power
supply connections (115 V and
108-230 V) with internal drip loop
Warning
Risk of electrical shock! The
electrical connection and
protection should be carried out in
accordance with the latest edition
of the National Electrical Code,
local codes and regulations by a
qualified electrician.
The safe operation of this pump
requires that it be grounded in
accordance with the National
Electrical Code and any state, local
governing codes and regulations.
Ground wires should be copper
conductors of at least the size of
the circuit conductor supplying
power to the pump. Connect the
ground wire to the grounding point
in the terminal box and then to an
acceptable ground. Do not ground
to gas or water supply line.
All wire sizes should be copper and
size-based on the ampacity
(current carrying properties of a
conductor) as required by the
National Electrical Code or local
regulations. Additionally UL
requires the following wire sizes to
be used: 18-12 Solid or 14-12
Stranded.
Both the power and grounding
wires must be suitable for at least
194 °F (90 °C).
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