MYERS MRGD200MC2, Owner'S Manual, Page: 4 / 28

Electrical 4
Control Panels
Risk of electric shock. Ground pump and
motor before connecting controls or power supply.
Adhere to local electrical codes governing pump and
control installations.
A control panel is not included with the pump.
Install simplex or duplex control panel (purchase
separately) for proper pump operation. A full range of
controls and switches is listed in our catalog.
If a Myers control panel is not used, install a control
panel with circuit breaker or fused disconnect as
required by local code. Use magnetic starters with
ambient compensated overload protection. Three phase
units require three line protection; single phase units
require only one line protection. Inadequate protection
voids the warranty.
Control Panel Overload Adjustment – Three
Phase
NOTICE: See your control panel installation and
operating instructions before adjusting overload setting.
Set the overload protective device to the nameplate full
load current.
Size the overload protective device so that the trip
current is 115% of the nameplate full load current.
U1 U2
V1
V2 W1 W2 Z1 Y1 X1 X2 Y2 Z2
Red
White
Black
230 Volt
Power Supply
Motor
Windings Motor
Windings
Factory Connected for 230V/3Ø as shown
X1
X2
Z1
Y1 Y2
Z2
Figure 2: 230 Volt 3 Phase Wiring Connections
U1
U2
V1
V2
W1
W2
Z1 Y1 X1
X2 Y2 Z2
Red
White
Black
460 Volt
Power Supply
Motor
Windings Motor
Windings
Connect for 460V as shown.
Y2
X1 Y1 Z1
U2
V2
W2
X2
Z2
Figure 3: 460 Volt 3 Phase Wiring Connections
Motor Individual Cord Minimum Discharge Max Temp.
Model Motor Full Branch Circuit Length Water Level
Adapter Rating (°F)
Number HP Voltage Load Amps Required (Amps) in ft. (m) in inches (mm)
Size Intermittent
MRGD200MC2 2 230/60/1 13.0 20 20 (6.1) 22 1/2 (572) 1 1/4 NPT 122
MRGD200MC3 2 230/60/3 8.2 15 20 (6.1) 19 1/2 (496) 1 1/4 NPT 122
MRGD200MC4 2 460/60/3 4.1 15 20 (6.1) 19 1/2 (496) 1 1/4 NPT 122
TABLE I: Motor, Switch, & Cord Specifications