AccuLoad IV Installation & Maintenance Manual
Installation 36
3.6.2 DC Instrument Power
The AC instrument power is connected to the A4M module, which produces 24 VDC power for the standard
modules in the AccuLoad (THMI and A4B). The A4M board’s DC power supply is also capable of supplying
up to a maximum of 1 amp of regulated DC power, which can be used to power optional A4I modules, card
readers, meter pulse transmitters, and other external DC circuits.
Figure 22: Example of AC Wiring for a Typical AccuLoad