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CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER J—ELECTRICAL ENGINEERING (parts 110 to 113) > PART 113—COMMUNICATION AND ALARM SYSTEMS AND EQUIPMENT > SUBPART 113.10—Fire and Smoke Detecting and Alarm Systems (§113.10-1 to §113.10-9) > 113.10-5—Common return.
113.10-5—Common return.
A conductor must not be used as a common return from more than one zone.