Pulsafeeder MPC - Manual (Page 20)

the branch circuit (see Table 1). A circuit breaker or disconnect switch
with fuses must be wired in series with terminals L1 and L2/N in
accordance with all applicable local and national electrical codes and
regulations. The circuit breaker or disconnect switch shall be located in
close proximity to the MPC controller. It must be positioned such that it is
not difficult to operate and must be marked or labeled to identify it as the
power disconnect for the MPC.
The MPC controller is provided with a ¾ inch NPT inlet for incoming AC
power wiring at the rear (pump gearbox end) of the enclosure. Utilize the
appropriate conduit fittings to route and seal the supply wires into the
MPC enclosure.
These wires are secured to the terminal strip at the right-hand end of the
AC drive as per Table 2 and Figure 3. Remove approximately 0.20 –
0.25 inches, (6mm) of insulation from the end of each conductor. Loosen
the terminal strip screw, and insert the stripped wire end fully into the
terminal. Tighten the screw to 4.5 in-lbs. (0.5 Nm) to secure the
conductor. Make certain that the terminal grips the wire, not the
insulation. Ensure that all wiring meets applicable local and national
codes and requirements.
8.4.7 Power Wiring Diagram
MPC Drive
Terminal
115 V Operation 230 V Operation
L1 Line Line
L2 / N Neutral Line/Neutral
Earth Ground Ground
Table 2 – AC Drive Terminals
Note: Power wiring should have a rating of at least 300 volts AC (rms) and a
temperature rating of at least 105 Degrees C.
A circuit breaker or disconnect switch with fuses, must be provided in accordance
with all applicable local and national electrical codes and regulations. Size
external fusing/breaker for ratings for the wiring used for the unit.
Applicable national and local electrical codes take precedence over
recommendations made here.