Instruction Manual

Doc. #: 0260011-J0 Rev B
20
3. Power Configurations
This section lists the power configurations available with the AMPS24 system and defines the
terminology used throughout this manual.
3.1 Power System Configuration Terminology
3.1.1 120Vac Single Phase
A single phase system is 120Vac from L1 to N (neutral).
3.1.2 120/208Vac 2-Pole
The term 120/208 2-POLE is used
throughout this manual to identify
the “2-pole from a 3-phase supply”
configuration such as L2 to L3 shown
in Figure 12.
3.1.3 120/240Vac Split Phase
The term 120/240Vac SPLIT PHASE
is used throughout this manual to
identify the “3-wire/ 2 legs from a
single phase supply” configuration
shown in Figure 11.
L2
N
L1
240V
120V /0°
120V /180°
L2
N
L3
L1
208V
208V
208V
120V
120V
120V
Figure 11 — Split Phase from a Single phase supply
Figure 12 — 2-Pole from a 3-phase supply
3.1.4 120/208Vac 3-Phase
Each phase conductor is 120 degrees out of phase with the other, as shown in Figure 12. All three
phases (3-pole) plus the neutral are used.