Metal or Nonmetallic Poles Supporting Luminaires. This type of luminaire (fixture) must comply with Sections 410.65 through 410-72. within 900 mm (3 ft.) horizontally and 2.5 m (8 ft.) vertically from the top of the bathtub rim or shower stall threshold. Wiring of luminaires. Scope. These are very commonly used in residential construction and are a very important part of the residential inspection process. Often we find shelves that hold cardboard boxes or garments that are easily ignited if in contact with a heat source. Prescriptive steps for connecting and disconnecting are provided and must be provided on the equipment. Recessed high-intensity luminaires designed to be installed in wall or ceiling cavities shall have thermal protec tion and be identified as thermally protected. No Other Equipment. a. A luminaire shall be permitted to be connected witha cord terminating in a grounding-type attachment plug orbusway plug. Additional Requirements. Luminaires shall be wired so that the screw shells of lampholders are connected to the same luminaire or circuit conductor or terminal. Informational Note: Combustible low-density cellulose fiber board includes sheets, panels, and tiles that have a density of 320 kg/m3(20 lb/ft3) or less and that are formed of bonded plant fiber material but does not include solid or laminated wood or fiberboard that has a density in excess of 320 kg/m3(20 lb/ft3) or is a material that has been integrally treated with fire-retarding chemicals to the degree that the flame spread index in any plane of the material will not exceed 25, deter mined in accordance with tests for surface burning characteris tics of building materials. Luminaires shall be permitted to be connected to busways in accordance with 368.17(C). Access to Boxes. long and not more than 1.8 m (6 ft.) long, be a suitable raceway or the tap conductor must be Type AC or MC cable. Along with making sure they have used lamps that are not larger than the luminaire allows per its listing and labeling, these little foil-covered insulation pieces are part of the fixture and are there to ensure we dont have heat transfer from the lamp to the wire terminations. The NEC specifies a few requirements for outlet boxes, inspection, suspended ceilings, luminaire (fixture) studs, insulating joints, raceway fittings, busways, and trees. 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If they dont say IC Rated on the luminaire, then the inspector should make sure there is a definite method to prevent insulation ever coming into contact with the luminaire. Voltage. D9 Feeder Ampacity Determination for Generator Field Control, Example No. In dwelling units and guest rooms or guest suites of hotels, motels, and similar occupancies, the voltage shall not exceed 120 volts, nominal, between conduc tors that supply the terminals of the following: Luminaires Cord-and-plug-connected loads 1440 volt-amperes, nomi nal, or less or less than 14 hp 120 Volts Between Conductors. Conductors in vertical poles used as raceway shall be supported as provided in 300.19. Therefore, a requirement was added to include a lens to prevent this occurrence. Conductors shall be arranged so that the weight of the luminaire or movable parts does not put tension on the conductors. The minimum clearance between luminaires installed in clothes closets and the nearest point of a closet stor age space shall be as follows: 300 mm (12 in.) The disconnecting means shall be located so as to be accessible to qualified persons before servicing or main taining the ballast. This restriction is not required if the luminaire (fixture) is installed in poured concrete and is approved for this use or when the luminaire (fixture) by construction design provides characterisitics that are equivalent to thermally protected characteristics, and are identified as such. Refer to 310.15 or 310.60 for 14 AWG and larger conductors. The vertical location of the kitchen countertop receptacles is addressed in 210.52 (C) (5); they are not permitted more than 20 inches above the countertop. Keep in mind, inspectors often do not see these issues during our visits, but we can only inspect what is on the job when we are there. Metal Cabinets. Use Table 402.5 for 18-16 AWG conductors. Wet and Damp Locations. No solder shall be used in the construction of a luminaire recessed housing. In Ducts or Hoods. Where supplied by the ungrounded conductors of a circuit, the switching device of lampholders of the switched type shall simultaneously disconnect both conductors of the circuit. This month we will continue the series of articles covering basic electrical inspection items. Total Cards. Insulating Joints. constant wattage autotransformer However, in locations such as small alcoves or similar areas where 4 inch cans are installed, we may find problems. As we mentioned earlier, we have a definition for closet storage space. Electric-discharge and LED luminaires supported independently of the outlet box shall be connected to the branch circuit through metal race way, nonmetallic raceway, Type MC cable, Type AC cable, Type MI cable, nonmetallic sheathed cable, or by flexible cord as permitted in 410.62(B) or 410.62(C). The ballast of a fluorescent luminaire installed indoors shall have integral thermal protec tion. Rating. I will not cover each of these here, please review them on your own so that you will be aware of what is in this part of the code. Raceway Fittings. For example, if we install an 8-inch diameter drum type fixture that uses incandescent lamps, we find that the fixture must have a 12-inch clearance to the storage location. A means to connect an equipment ground must be provided for a metal luminaire (fixture). Fire-Resistant Construction. You cannot have any part of a suspended fixture (i.e., the cord, pendant chain, etc.) Stranding. Luminaires in Indoor Sports, Mixed-Use, and All-Purpose Facilities. Open-Circuit Voltage Exceeding 300 Volts. Electrical Level 1 - Chapter 26105-14. Adequate airspace shall be provided between lamps and shades or other enclosures of combustible material. A luminaire that weighs more than 3 kg (6 lb) or exceeds 400 mm (16 in.) Connection of utilization equipment to facilitate frequent interchange. 410.8 Inspection. Secondary Connections. (A) Definition. (D) Bathtub and Shower Areas. This requirement provides a safe method to service the ballast, and continues to be extended in its enforcement, adding that in existing installations the disconnecting means shall be added when ballast replacement is performed. Lamp tie wires, mount ing screws, clips, and decorative bands on glass spaced at least 38 mm (112in.) Equipment that has an open- circuit voltage exceeding 1000 volts shall not be installed in or on dwelling occupancies. The electrical rating shall include the voltage and frequency and shall indicate the current rating of the unit, including the ballast, transformer, LED driver, power supply, or autotransformer. Electric-discharge and LED luminaires surface mounted over concealed outlet, pull, or junction boxes and designed not to be supported solely by the outlet box shall be provided with suitable openings in the back of the luminaire to provide access to the wiring in the box. Framing members of suspended ceil ing systems used to support luminaires shall be securely fastened to each other and shall be securely attached to the building structure at appropriate intervals. In indoor locations other than dwellings and associated accessory structures, fluorescent luminaires that utilize double-ended lamps and contain ballast(s) that can be serviced in place shall have a disconnecting means either inter nal or external to each luminaire. Part III. Transformers shall be located so that adjacent combustible materials are not subjec ted to temperatures in excess of 90C (194F). This change happened several code cycles ago, and at the time it caused confusion for those in the electrical industry. Chapter 4 of the National Electrical Code (NEC), Equipment for General Use, contains 22 articles. Many of the items have been created directly as a result of disaster conditions through history. Other. Several codes regulate the use of artificial lighting. Equipment other than showcases shall not be electrically connected to showcases. The grounding terminations within the poles are often difficult to install and also inspect. A pole with a hinged base shall have the equipment grounding terminal accessible within the base.Exception to (3): No grounding terminal shall be required in a pole2.5 m (8 ft) or less in height abovegrade where the supply wiring method continues without splice or pull, and where the interior of the pole and any splices are accessible by removing the luminaire. The code has a specific set of dimensions for storage space with an explanatory diagram. Requirements for communications . Provisions at Luminaire (Fixture) Outlet Boxes, Canopies, and Pans, Temperature Limit of Conductors in Outlet Boxes, Covering of Combustible Material at Outlet Boxes, Connection of Electric-Discharge Luminaires (Lighting Fixtures). Part XV. (B) Luminaire (Fixture) Types Permitted. for recessed fluorescent luminaires instal led in the wall or the ceiling. Many times workers who are shocked dont die from the electrocution, but from the fall. Provisions at Luminaire Outlet Boxes, Canopies, and Pans. Auxiliary equipment for electric-discharge lamps shall be enclosed in noncombustible cases and treated as sources of heat. Recepta cles, connectors, and attachment plugs shall be of a listed grounding type rated 15 or 20 amperes. from combustible material and at least 75 mm (3 in.) Independent of the Outlet Box. Portable Handlamps. Canopies and outlet boxes taken together shall provide sufficient space so that luminaire conductors and their connecting devices are capable of being installed in accordance with 314.16. Luminaire Studs. Luminaires (Fixtures) over Combustible Material. New articles and requirements for never before covered systems and equipment such as Class 4 fault-managed circuits, hazardous locations within commercial and industrial cannabis production facilities, equipotential bonding in and around areas with splash pads, insulated bus pipe/tubular covered conductors systems, and more of a ballast, LED driver, power supply, or transformer shall have an insulation temperature rating not lower than 90C (194F), unless supplying a luminaire marked as suitable for a different insulation temperature. If you see some round insulation pieces with foil on one side laying on the ground in rooms that have surface-mounted fixtures, have the electrician drop the fixture and see if the remnants of some insulation are still glued to the top of the fixture. Open-Circuit Voltage of 1000 Volts or Less. The NEC Wiki|powered by theWikiWP theme andWordPress. Conductors shall be secured in a manner that does not tend to cut or abrade the insulation. in any dimension shall not be suppor ted by the screw shell of a lampholder. He has been a master electrician since 1988. nec article 410 contains requirements for installingcushion foundation case . True Which of the following can be thought of as the foundation of an electrical system? Recessed. 2014 Code Language: 410.130 (G) Disconnecting means. This becomes a challenge because insulation has the tendency to go everywhere if it is blown in; or if it is batt insulation, it may eventually fall onto a fixture. Luminaires installed in wet or damp locations shall be installed such that water cannot enter or accumulate in wiring compartments, lampholders, or other electrical parts. The next key item to address is the use of flush and recessed luminaires, and Part X has special provisions for these. For common inspections, it is important to verify that the outlet boxes are covered; this is usually done by the fixture and/or the canopy. Locations Not Permitted. Im not going to cover every one of these items in detail, but please be aware that units installed in wet or damp locations have to be listed for the appropriate location and should prevent water from entering a wiring compartment. The switch or circuit breaker shall be located within sight from the luminaires or lamps, or it shall be permitted to be located elsewhere if it is lockable in accordance with 110.25. These buildings concern unique environments that pose a high risk to multiple people. 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