C.F.R. » Title 46 » CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY › SUBCHAPTER J—ELECTRICAL ENGINEERING › PART 113—COMMUNICATION AND ALARM SYSTEMS AND EQUIPMENT › Subpart 113.10—Fire and Smoke Detecting and Alarm Systems

46 C.F.R. § 113.10-5

Common return

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A conductor must not be used as a common return from more than one zone.