The electrical diagram outlines the power supply connections for a meter and relay unit. The meter connects to a power supply with terminal A1 for line positive and terminal A2 for neutral negative, along with a grounded connection. The relay utilizes terminals A01 for line positive and A02 for neutral negative, integrated with a battery backup source connected via points E03 and E04. Both components include equipment grounding symbols tied to a common ground path.
METER POWER SUPPLY PS A1 L(+) N(-) A2 RELAY A01 L(+) N(-) A02 POWER SUPPLY VBAT E03 E04
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