Prewiring for Other Circuits. Prewiring installed for the purpose of installing other appliances or devices shall comply with the applicable portions of this article and the following:
(1) An overcurrent protection device with a rating compatible with the circuit conductors shall be installed in the distribution panelboard with wiring connections completed.
(2) The load end of the circuit shall terminate in a junction box with a blank cover or a device listed for the purpose. Where a junction box with blank cover is used, the free ends of the conductors shall be adequately capped or taped.
(3) A label conforming to 551.46(D) shall be placed on or adjacent to the junction box or device listed for the purpose and shall read as follows:
THIS CONNECTION IS FORRATED
VOLT AC, 60 HZ, AMPERES MAXIMUM.
DO NOT EXCEED CIRCUIT RATING. AN AMPERE RATING NOT TO EXCEED
80 PERCENT OF THE CIRCUIT RATING SHALL BE LEGIBLY MARKED
IN THE BLANK SPACE.
551.48 Conductors and Boxes. The maximum number of conductors permitted in boxes shall be in accordance with 314.16.
551.49 Grounded Conductors. The identification of grounded conductors shall be in accordance with
200.6.
551.50 Connection of Terminals and Splices. Conductor splices and connections at terminals shall be in accordance with 110.14.
551.51 Switches.
(A) Rating. Switches shall be rated in accordance with
551.51(A)(1) and (A)(2).
(1) Lighting Circuits. For lighting circuits, switches shall be rated not less than 10 amperes, 120-125 volts and in no case less than the connected load.
(2) Motors or Other Loads. Switches for motor or other loads shall comply with the provisions of
404.14.
(B) Location. Switches shall not be installed within wet locations in tub or shower spaces unless installed as part of a listed tub or shower assembly.
551.52 Receptacles. All receptacle outlets shall be of the grounding type and installed in accordance with
406.3 and 210.21.
551.53 Luminaires.
(A) General. Any combustible wall or ceiling finish ex- posed between the edge of a luminaire canopy, or pan and the outlet box, shall be covered with noncombustible material or a material identified for the purpose.
(B) Shower Luminaires. If a luminaire is provided over a bathtub or in a shower stall, it shall be of the enclosed and gasketed type and listed for the type of installation, and it shall be ground-fault circuit- interrupter protected.
(C) Outdoor Outlets, Luminaires, Air-Cooling Equip- ment, and So On. Outdoor luminaires and other equipment shall be listed for outdoor use.
551.54 Grounding. (See also 551.56 on bonding of non-current-carrying metal parts.)
(A) Power-Supply Grounding. The grounding
conductor in the supply cord or feeder shall be connected to the grounding bus or other approved grounding means in the distribution panelboard.
(B) Distribution Panelboard. The distribution panelboard shall have a grounding bus with sufficient terminals for all grounding conductors or other approved grounding means.