CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER J—ELECTRICAL ENGINEERING (parts 110 to 113) > PART 112—EMERGENCY LIGHTING AND POWER SYSTEMS > SUBPART 112.45—Visible Indicators (§112.45-1 to §112.45-1) > 112.45-1—Visible indicators.

112.45-1—Visible indicators.

There must be visible indicators in the machinery space to show;
(a) When an emergency battery is discharging; and
(b) When the automatically controlled emergency power source is supplying the emergency loads.