Rules for electrical work in flood zones

For electrical work on projects subject to the provisions of this Article, the provisions of this Section shall supplement the requirements of Section .Main Power Service. The incoming main commercial power service equipment, including all metering equipment, shall be located above the regulatory flood elevation or in a waterproof enclosure or barrier with GFP on the main disconnecting means.Stationary and Portable Equipment. Switchgear, control centers, transformers, distribution and power or lighting panels shall be located above the regulatory flood elevation or in a waterproof enclosure or barrier with GFP on the main disconnecting means. Stationary and portable or movable electrical equipment shall be permitted to be located below the regulatory flood elevation provided that the circuit and equipment shall be protected with GFCI, except sump pump and its circuit may be without GFCI. In cases where GFCI cannot be installed because of amperage size or usage, GFP shall be installed.Normal and Emergency Light Circuits. All normal lighting circuits extending into areas below the regulatory flood elevation shall be energized from a common distribution panel located above the regulatory flood elevation or in a waterproof enclosure or barrier with GFP. All emergency lighting circuits into areas below the regulatory flood elevation shall be energized from an independent distribution panel also located above the regulatory flood elevation or in a waterproof enclosure or barrier with GFP.Emergency Lighting Requirements. All components of emergency lighting systems installed below the regulatory flood elevation shall be so located that no component of the emergency lighting system is within reach of personnel working at floor level in the areas where emergency lighting systems are utilized unless the emergency lighting circuits are provided with GFCI. The emergency lighting may be furnished by a storage battery, prime mover-generator system, a separate commercial power supply system, the same commercial power system, or a combination thereof, subject to the following provisions:Storage Battery (including battery operated lighting units). Battery operated lighting units shall be completely self contained and shall indicate the state of charge of the battery at all times. Lighting units shall automatically provide light when the normal source of lighting in the areas is de-energized.Separate Commercial Power Supply System. This source of energy shall have a degree of reliability satisfactory to the administrative authority. A system fed from a transformer other than that used for the regular supply and not on the same poles (except service pole) as the regular supply is deemed to have the required degree of reliability. A secondary circuit fed from the same primary circuit as the regular supply shall be regarded as a separate system.Same Commercial Power Supply System. The system shall be an underground secondary system and a separate service shall be connected on the line side of that service switch or breaker of the regular service.Receptacle Circuit Below Regulatory Flood Elevation. Receptacle circuits shall be permitted to be installed below the regulatory flood elevation, provided that these circuits shall be protected with GFCI.