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230VAC Single Phase Derating for Three Phase Controls
Single phase AC input power can be used to power a three phase control.
However, the continuous and peak current ratings of the control must be
reduced by 35% (derated).
Control
Control
Output
Output
Fast Acting
Rating
Amps
HP
0.75
10
1
12
1.5
15
2
20
3
25
Note: All wire sizes are based on 75°C copper wire, 1% line impedance.
Figure 3-5 Single Phase 230VAC Power and Motor Connections
L1
L2
L1
L2
L3
Baldor
Series 15P
Control
T1
T2
T3
T2 T3
T1
3-7 Receiving and Installation
Input Fuse
Input Fuse
Time Delay
Amps
9
10
15
17.5
25
Earth
Shield wires inside a metal conduit.
Motor wire should be sized using the 3 phase
information in Table 3-4.
Metal conduit should be used to shield output wires
(from T1, T2, T3 of control to T1, T2, T3 of motor).
G
AC Motor is not provided with control.
Wire Gauge
Wire Gauge
AWG
mm
2
14
2.08
14
2.08
14
2.08
14
2.08
12
3.31
MN715P
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