If the entire feeder/branch circuit assembly were to be protected in the conventional manner, the motor would cut out long before reaching operating speed. NEC 620.62 requires the elevator disconnecting means (fused switch or circuit breaker) to selectively coordinate with all supply-side overcurrent devices. A clean and dry elevator pit and machine/control room provided (ASME A17.1 Rule 2.1.2) Machine/control room meets manufacturer's requirement of preserving ambient temperature control and humidity (ASME A17.1 Rule 2.7.9) Elevator floor covering installed with appropriate smoke and flame spread (ASME A17.1 Rule 2.14.2) All Rights Reserved | Contact Us | Privacy Policy. Article 511 provides the requirements for commercial garages areas used for the storage or repair of self-propelled vehicles that use combustibles (liquid or gas) for power. However, it is likely that for many elevator controllers, this may not be high enough for the available fault current where they will eventually be installed. You'll need to run telephone cables to the equipment room control panel, but the elevator supplier will take care of getting the cables to the elevator cab. CLAIMED . The hazards are external to the equipment enclosure since equipment SCCR testing and evaluation criteria for product standards are most often performed with the enclosure doors closed and latched, and the fault occurring external to the enclosure. Elevator Pit FC Requirements CE017 - 1 - AppendicesABC - Code Dec. 21, 2010. proved for elevator locations - car, hoistway, pit and a-chine roo equireents in Article odify the articles in Chap - ter For eaple, it is stated that the cross-sectional area Similarly, the integrity of the traveling cable is emphasized. With heavy use on a hot day, the oil can overheat, causing elevator shutdown. Use the below learning-reinforcement questions to study for the Continuing Education Assessment Exam available online at www.elevatorbooks.com or on page 81 of this issue. Which equipment requires a separate branch circuit in the elevator car? Is lighting required to be GFCI protected in the machine room? Where is the lighting switch to be located in the machine room? What is the maximum raceway conductor fill in an elevator hoistway? How many disconnecting means are required for an elevator power supply? In all cases, the working space must permit at least a 90 opening of equipment doors or hinged panels. Where the elevator shaft and/or equipment room has a sprinkler fire suppression system installed, the elevator Code requires main line power to the elevator be removed prior to the application of water. You need to Subscribe to continuing reading. All of these options and special wiring can be challenging depending upon the location of the shunt trip circuit breaker as well as who has responsibility for providing these additional options. As such, elevator controller manufacturers should make the effort to rethink their designs to avoid costly system design changes. ), a duplex 15A 120-volt receptacle in pit with ground- fault circuit protection and a 15A 120-volt Non GFCI receptacle for the sump pump. The condition is that all conductors must be insulated for the maximum voltage applied to any conductor within the cables or raceway system, and all live parts of the equipment must be insulated from ground for this maximum voltage. This equipment is restricted to that used in connection with the specific elevator, dumbwaiter, escalator, moving walk, platform lift or stairway chairlift. Building codes were deemed necessary to protect the public against shoddy builders and outmoded construction techniques. +90 (216) 348 4876, India Office NEC 2011 Article 620.21(2)(b) states that hard-service cords and junior hard-service cords that conform to the requirements of Article 400 (Table 400.4) are permitted as flexible connections between the fixed wiring on the car and devices on the car doors or gates. First, you'll need to install lighting in the elevator equipment room (Photo 1) and shaft pit (Photo 2). We resume with a look at wiring methods, overcurrent protection, grounding and other NEC provisions as they relate to these installations. It does specify wiring methods allowed, though, in 620. or larger is permitted to be installed in lengths in excess of 6 ft. Where motor-generators, machine motors or pumping-unit motors and valves are located adjacent to or underneath control equipment and provided with extra-length terminal leads not exceeding 6 ft. in length, such leads are permitted to be extended to connect directly to controller terminal studs without regard to carrying-capacity requirements. GFCIs in Elevator Pits, Receptacles and More Traction elevators are typically faster and more energy efficient than hydraulic elevators, and are often used for high-rise buildings. -inch conduit is needed to the sump pump. A separate branch circuit shall supply the hoistway pit lighting and receptacle (s). The two primary hazards are fire and electric shock or arc flash, although there are others. Mobile, AL 36606 USA The floor specified as the designated landing, which must be approved by the Fire Marshal, is usually the floor on grade level so passengers can quickly exit to the outside. Choose topics from a full list of courses covering electrical topics that cover what you need to know from the NEC and other electrical codes and standards. Elevator Pit Sump Pump Electrical Requirements Besides the initial determination requirement of paragraph (c) (1), the "host" employer must comply with the five (5) requirements of paragraph (c) (8) when engaging another employer (contractor) who will have employees in permit spaces under the control of the host employer. The NEC rule specifies that the minimum size for paralleled conductors is 1/0 AWG, which is much too big for an elevator traveling cable. You'll be responsible for specifying the items related to the fire alarm and some controls, as well as supplying lighting and power to the equipment room and elevator pit. Home Articles Elevator World June 2012 Issue NEC Article 620: Elevators, Part 2. Such vehicles include, but are not . PDF Electric Elevator Checklist Cover Page - Oregon When you're designing an electrical system for a building, don't let elevator requirements bring you down. (To design and install an elevator for a Class I, Division 1 location would be quite an undertaking.). Every building is different. Where multiple driving machines are connected to a single elevator, there is to be one disconnecting means to disconnect the motor(s) and control-valve-operating magnets. This strategy works to improve the flexibility of the traveling cable, but it is contrary to a general NEC rule concerning the paralleling of conductors, which is generally done in very large sizes to avoid unwieldy wire pulls and terminations. It is worth noting that these NEC terms, used throughout Article 620, have been chosen to correlate with A17.1-2007 usage. DOCX 26 80 00 - Elevator Electrical Requirements - University of Illinois (A) Separate Branch Circuit. It states an elevator is permitted to be run by an emergency or standby power system. The feeder OCPD needs to remain closed so the remaining elevators have power and continue to function. Related Code Sections 802.1.8 Indirect/Special Waste, Elevator Pit Drain or Sump Pump If the building has emergency power available, use it to supply the cab lights. Where necessary, it is mandated that suitable guards be provided to protect the cables against damage. For platform lifts and stairway chairlifts, the duty is intermittent. In case of emergency, electricians, maintenance personnel and any elevator technicians called in to the premises should have ready access to the key. Guarding: Where possible, install temporary guarding to protect from inadvertent contact. The action you just performed triggered the security solution. , !! endstream endobj 954 0 obj <. 2.2.6.1 This switch shall be so located as to be acces-sible from the pit access door. The electrical conductors and equipment for non-mine elevators that extend below grade are under NEC jurisdiction. Cables used in Class 2 power-limited circuits are permitted between risers and signal equipment and operating devices, provided they are supported and protected from physical damage and are of the jacketed and flame-retardant type. Dont troubleshoot unless you can keep your shoe/boot soles dry. Second, it must be configured so as to eliminate any chance of tangling or chafing against the inner surface of the hoistway or items mounted on it. 974 0 obj <>/Filter/FlateDecode/ID[<64E135C225F1064D91BC8119D14516A9>]/Index[953 36]/Info 952 0 R/Length 105/Prev 204101/Root 954 0 R/Size 989/Type/XRef/W[1 3 1]>>stream The traveling cable, moreover, may be run without raceway from inside the hoistway to elevator-controller enclosures and to the elevator car and machine room and similar locations outside the hoistway for a distance not exceeding 6 ft. With the new elevator controller requirements, more attention will be focused on the elevator system. If you provide your elevators with emergency power, you must run communications wires between the automatic transfer switch (ATS) and the elevator control panel. After reading this article, you should have learned: Which locations require sepa-rate, dedicated branch circuits Which branch circuits are not to be provided with ground fault circuit interrupter (GFCI) pro-tection Which locations must have one or more duplex receptacles Where overcurrent protection for hoistway, pit and machine-room lighting must be located How unsupported lengths of traveling cables are measured. EazyLift Elevators, Stairlifts, Wheelchair Lifts & Ramps. Other requirements: Spa's and Hot Tubs 1996 NEC 15-20 Amp 120 volt Receptacle Requirements for Dwelling units: All outdoor The proposals resulted in adding new requirements in the 2017 NEC for: Marking the elevator controller short-circuit current rating (SCCR) by the elevator control-ler manufacturer. Performance & security by Cloudflare. He has focused on writing since 2006, having written for such magazines as ELEVATOR WORLD, Electrical Construction and Maintenance, Cabling Business, Electrical Business, Nuts and Volts, PV Magazine, Electrical Connection, Solar Connection, Solar Industry Magazine, Fine Homebuilding Magazine and Engineering News. If elevators are supplied by the emergency, legally required standby or critical operation power systems, then selective coordination is required per the 2017 NEC in 700.32, 701.27 or 708.54. 68 | WWW.ELEVATORWORLD.COM | June 2012 Continuing Education . In many cases, the overcurrent protective devices that are suitable for this level of protection are current-limiting fuses rather than a traditional circuit breaker. A different occurrence involves exposure to the explosive blast when there is a line-to-line or line-to-ground arc blast.