elevator electrical code

CHAPTER 31. 2702.2.20.1 Equipment Requiring Emergency Power System. Requirements in Article 620 modify the articles in Chapter 3. If you provide your elevators with emergency power, you must run communications wires between the automatic transfer switch (ATS) and the elevator control panel. /Font <>>> The same figure applies to nonmetallic wireways. Elevator power disconnect (with utility feed marking) located in the machine room or other permitted location. Other Consideration In this article, I will reference the 2020 edition of the National Electrical Code and the 2021 edition of the International Building Code (IBC) . Adhering to the requirements will ensure a hazard-free electrical installation. In some cases, it may require a means to test the shunt trip operation or have one contact operate the shunt trip of more than one elevator. Modern electronic elevator controls can be sensitive to temperature shifts. endobj Some jurisdictions will have special provisions that modify power shut down provision or they will not permit sprinklers at all out of concerns for first responders utilizing the elevator during a fire. First, the traveling cable must be composed of very fine-stranded conductors so it can flex with a minimum of internal stresses, ensuring long service life and reliability. There are many fire and life safety code provisions that mitigate this risk and permit elevators to be used without increasing the risk to occupants. P Escalators, moving walks, conveyors, personnel hoists and material hoists shall comply with the provisions of Sections 3004.2 through 3004.4. 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. These may include: The author would like to recognize Jonathan Kennedy for his assistance in creating this article. Since 1953, Elevator World, Inc. has been the premier publisher for the global vertical transportation industry. endstream While they certainly provide a convenient and accessible means for traveling up and down through a building they also create vertical openings in a building, increasing the potential for the spread of fire and smoke. of the sprinkler heads. The exemption to this is for hoistways that are enclosed, noncombustible, and do not contain combustible hydraulic fluid. The ASME A18.1-2017 is the Safety Standard for Platform Lifts and Stairway Chairlifts. The elevator controller manufacturer must determine the required elevator controller SCCR as stated in the elevator controller specification and provide an elevator controller SCCR that is equal to or greater than the available fault current thats indicated in the design documents where there are multiple elevator controllers at different locations. CHAPTER 27 - ELECTRICAL . A recent news story highlights how an iPhone safety feature may be adversely affecting 911 call centers. 45.55.184.53 Heres what you need to verify. Good documentation is of key importance to recalling what decisions were made and why. \ A&&'70 Sk*EZfm}1csX)9R5R8jW5J)+5s!?>)%Xv}/)_x>j@WCw[ If this is not done and the available fault current exceeds the elevator controller SCCR, other solutions to reduce fault current must be reviewed or equipment changes and field evaluations may be needed. endobj We resume with a look at wiring methods, overcurrent protection, grounding and other NEC provisions as they relate to these installations. This situation necessitates some special arrangement, such as a shunt trip or a preaction system, to make sure that water does not flow in the elevator shaft until power shutdown has occurred. The machine rooms for hydraulic type elevators are required to be provided with sprinkler protection. The basic rule for conductor fill of a metal wireway, as given in Article 376, is that the sum of the cross-sectional areas of all contained conductors at a cross section of a wireway is not to exceed 20% of the interior cross-sectional area of the wireway. Marking the available short-circuit (fault) current on the controller by the equipment installer. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. New licensing system launches May 8, 2023. <> stream Per the 2017 NEC, if the elevator is designated as an emergency system load, the disconnect must be protected by a surge protective device (SPD). In the event of a breakdown, that phone must automatically call a location staffed 24 hours a day. Find the latest information on elevator codes, laws and safety standards. Posted Under He participates in IEEE (Senior Member) with Industrial and Commercial Power Systems, NEMA (member of the Codes & Standards Committee), NFPA (committee member for NEC CMP-13 and NFPA 79), UL (508/60947 and 508A) and IAEI activities. In contrast to the lighting, these receptacles must be connected to GFCI devices. Checking off the items on this list will help you to ensure that you have met important national elevator codes. Years may lapse between the design and installation stages of a project. In Chapter 27, Section 2702.2.2, the code explains that where required, elevators shall be provided with standby power. It is conditionally provided that fiber-optic cables and conductors for operating devices, operation and motion control, power, signaling, fire alarm, lighting, heating and air-conditioning circuits of 600 V or less are permitted to be run in the same traveling cable or raceway system. endstream For traction type elevators there are a number of provisions that can all be met in order to omit sprinklers from these spaces. Cross-sectional areas of conduits are given in Chapter 9, Table 4. pipes, ducts) removed from the elevator space and hoistway (ASME A17.1 Section 2.8), Fire extinguisher provided in the machine/control room (ASME A17.1 Rule 8.6), Normally operable door closer with self-locking lockset from within machine room provided (ASME A17.1 Rule 2.7.3.4), Machine/control room provides 19 foot candles of illumination at floor level (ASME A17.1 Rule 2.7.9), Elevators located on an accessible route and comply with ASME A17.1 Safety Code for Elevators and Escalators- freight elevators not included (ADA 4.10.1), Each elevator car is equipped with an automatic self-leveling feature independent from the elevator operating device that brings cars to floor landings 1/2 under rated loading to zero loading conditions (ADA 4.10.2), Elevator call buttons are centered at 42 above the floor (ADA 4.10.3), Elevator call buttons have visual signals that notify when a call is both registered and answered (ADA 4.10.3), Elevator call buttons are no smaller than (ADA 4.10.3), Elevator call buttons are raised/flush (ADA 4.10.3), Any objects below elevator call buttons do not project into the lobby more than 4 (ADA 4.10.3), There is a visible and audible signal at every hoistway that communicates which elevator will be answering the call (ADA 4.10.4), Audible signals: either sound once to indicate up and twice to indicate down, or use verbal announcements that state Up and Down, Hall lantern fixtures center lines are located at least 72 above the floor, Raised and Braille floor indications are provided on all elevator hoistway entrances on both jambs (ADA 4.10.5), Elevator doors open and close automatically, included with an automatic device that stops and reopens car and hoistway door if door is obstructed by object or person without requiring contact (ADA 4.10.6), Door devices remain effective for at least 20 seconds, The minimum time for elevator doors to remain fully open in response to a car call is 3 seconds (ADA 4.10.8), Space is provided for a wheelchair user to enter, reach controls and exit the elevator car (ADA 4.10.8), Cab length is at least 51 with at least 54 from the back of the cab to the face of the door, Cab width for side opening doors is at least 68, Cab width for center opening doors is at least 80, Floor surfaces are slip resistant (ADA 4.10.10), If carpet is used it has pile thickness or lower and all exposed edges are fastened with carpet edge trim, At least 5 foot candles are used for car controls, platform, car threshold and landing sill (ADA 4.10.11), Meets car control panel requirements (ADA 4.10.12), Control buttons are raised/flush and are at least , Control buttons are designated by Braille, Floor buttons for side approach are 54 or lower above finish floor, Floor buttons for front approach are 48 or lower above finish floor, If car has center opening doors, controls are located on front wall, If car has side opening doors, controls are located on front wall next to door or side wall, A visual indicator is provided above the cars control panel to relay the position of the elevator within the hoistway with corresponding numbers that illuminate and an audible signal as each floor is passed or stopped on (ADA 4.10.13), The highest operable part of an elevators two-way emergency communications system is 48 or lower from the floor of the elevator car (ADA 4.10.14), The elevators two-way emergency communications system is established by a raised/recessed symbol and lettering adjacent to the device (ADA 4.10.14), Elevator machine/control room venting has appropriate fire dampers in penetrations, Depending on the location, smoke dampers are installed in machine/control room venting, If floor is one or more stories above or below the level of exit discharge, a two-way communication system is provided at the landing serving each elevator or bank of elevators, Ground-fault circuit interrupter (GFCI) protected, receptacle outlets are provided in the pit and the machine/control room (NEC 620.23 ( c ), NEC 620.4 ( c ), NEC 620.85), Car lights and receptacles are on a 15AMP separate branch circuit with a lockable over current protecting device located in the machine room (NEC 620.22, NEC 620.53), Over current protecting device is externally operable, fused/thermally protected, lockable disconnecting means (NEC 620.22, NEC 620.53), There is a separate branch circuit for the machine room light and receptacles (NEC 620.23), There is a separate branch circuit for the pit light and receptacle with at least 10 foot candles (NEC 620.24). x5s, rh Ds(6Fh.GF#m G&;w @H5xw"` d @ t?G,`@Cl( {@ Therefore, there will be two signals to the elevator control panel related to smoke detectors: one from the designated floor smoke detector and another combined signal from the smoke detectors at the other lobby landings and in the equipment room. ADA helps to ensure that tenants with disabilities have the same access to both elevator usage and safety. endobj We want to make it easy for you- here is a national elevator code checklist that covers elevator requirements, looking at ADA, ASME, IBC, and NEC. endobj The traveling cable or raceway is also permitted to include shielded conductors and/or one or more coaxial cables. These are the principle NEC 2011 Article 620 mandates. The branch circuit is to be protected by an overcurrent device located in the machine room, control room/machinery space or control space. The proposals resulted in adding new requirements in the 2017 NEC for: This article will also discuss other Code requirements that include selective coordination for elevators that are supplied by emergency, legally required standby or critical operation power systems or multiple elevators supplied from a single feeder, and shunt tripping of elevators where the elevator equipment room and/or shaft has a fire suppression sprinkler system. Minnesota amendments to those documents are located in chapter 1307. The vast majority of equipment serving the elevator is located within this room (i.e., elevator controller). All Rights Reserved | Contact Us | Privacy Policy. Traveling cables are to be approved for hazardous locations and must comply with the appropriate sections for each hazardous-location class that covers use of flexible cords. This is typically accomplished via a shunt trip device. A traction elevator's equipment room is typically located at the top of the building, directly over or adjacent to the shaft. The two main types of elevators are hydraulic and traction. Our directories are updated monthly and include website links to help you quickly find your elevator code authority for your state. xAD 'fjhD&5}[/FBznQ5\R1XwRJ9VQJq !jOj13G^J9[k/:vul c% Be sure to provide a horn/strobe alarm in large equipment rooms because they can be noisy, isolated places. Where a feeder powers more than one elevator, you need selective coordination; the OCPDs must be series-designed so a fault at one of the elevators will be cleared by only the OCPD serving it. Sprinklers are permitted to be omitted from the top of the shaft where the hoistway is noncombustible or limited-combustible and the car enclosure materials meet the requirements of ASME A17.1, Safety Code for Elevators and Escalators. If the disconnecting means is an integral part of the motor controller, it is to be operable without requiring opening of the enclosure. Motor feeder short circuit and ground-fault protection must be as required in Article 430, Part V for all motors. Elevator code compliance isnt necessarily a glamorous part of your job. All equipment in a machine room-less design is installed within the elevator shaft or exterior compartment near the elevator shaft, including the elevator controller and the elevator disconnecting means. The feeder OCPD needs to remain closed so the remaining elevators have power and continue to function. If the building code does not require sprinkler protection based on occupancy, constructions type, size, or height then the elevator is also not required to be protected. Chapter 30 Elevators and Conveying Systems. 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. Elevator feeder demand factors 620 620.14 Fire pumps, voltage drop (mandatory calculation) 695 695.7 Fixed electric heating equipment for pipelines and vessels, branch-circuit sizing . Fluid pressure in the cylinder raises and lowers the elevator cab. Design practices that are acceptable in some jurisdictions may not be in others. Another important electrical system design consideration for supplying power to multiple elevators is NEC 620.62. It provides that where more than one driving-machine disconnecting means is supplied by a single feeder, the overcurrent protective devices in each disconnecting means are to be selectively coordinated with any other supply side overcurrent protective devices. The locking capability is important so during maintenance, the equipment will not be inadvertently energized. The lighting is not to be connected to a GFCI, because the elevator car is not a place that should experience nuisance tripping. 2 0 obj The Safety Code for Existing Elevators and Escalators is the ASME A17.3-2015. Elevators, inclined stairway chairlifts, and inclined or vertical wheelchair lifts located in private residences. Chapter 26 Plastic. Part IX, Grounding, states that metal raceways, Type MC cable, Type MI cable or Type AC cable attached to elevator cars are to be bonded to metal parts of the car bonded to the equipment grounding conductor. The circuit(s) for the lighting and receptacles must be dedicated to the elevator area only. Search the most complete elevator code and regulations directory for United States endstream Wiring requirements are outlined in Part III of this Article. The architect has a choice of either traction or hydraulic elevators. You are a subscriber that needs to Sign In. Section 725.45 concerns the location of overcurrent devices and provides for feeder and branch-circuit taps, transformer primary side overcurrent device location and overcurrent device location at the input side of electronic power sources. Marking the elevator controller short-circuit current rating (SCCR) by the elevator controller manufacturer. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. This section also adds emergency lighting to the list of elevator backup power requirements. The disconnecting means is to be located adjacent to or an integral part of the motor controller. Get more of Elevator World. % endobj Because of this, several manufacturers offer an all-in-one shunt trip elevator disconnect switch that includes all the prewired accessories needed to comply with the various Code sections. The ASME documents are published by theAmerican Society of Mechanical Engineers, Chapter 1307, the 2020 Elevator and Related Devices Code, Espaol Where necessary, it is mandated that suitable guards be provided to protect the cables against damage. This situation necessitates some special . All rights reserved. (Source). Additionally, where elevators utilize combustible suspension means such as noncircular elastomeric-coated or polyurethane-coated steel belts, sprinklers must be provided unless the suspension means provide not less than an FT-1 rating when tested to a vertical burn test of UL 2556 and specific criteria are met. The code notes that elevator rails or other hoistway equipment are not to be used as the grounding conductor for lightning-protection systems. Pay attention to the following items, especially in winter weather, to help keep your elevators running safely and smoothly. With this comes deteriorating service and significantly higher phone line costs. Bonding of elevator rails to a lightning-protection system grounding conductor is permitted, but the conductor itself is not to be located in the hoistway. Part VIII, Machine Rooms, Control Rooms, Machinery Spaces, and Control Spaces, states elevator and similar-installation driving machines, motor-generator sets, motor controllers and disconnecting means are to be installed in a room or space set aside for that purpose. Chapter 24 Glass and Glazing. 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. Chapter 27 Electrical. 9 0 obj The disconnecting means is to be in the machine room or similar location, with provision for being locked in the open position. Below is a summary of these new 2017 NEC sections: In order to comply with these requirements a chain of events must occur. [emailprotected] Here again, the lighting is not to be connected to a GFCI, whereas such protection is required for the receptacle(s). Your IP: Suspending the cables from the supports by a means that automatically tightens around the cable when tension is increased for unsupported lengths up to 200 ft. An NEC Informational Note defines unsupported lengths. Elevators with driving machines located on the car or counterweight, or in the hoistway are permitted outside the specified spaces. 2701.1Scope. Similarly, motor branch-circuit short circuit and ground-fault protection must be as required in Article 430, Part IV, for all motors. 675 IAC 13 - Indiana Building Codes 675 IAC 14 - Indiana Residential Codes 675 IAC 15 - Industrialized Building Systems and Mobile Structures 675 IAC 16 - Indiana Plumbing Codes 675 IAC 17 - Indiana Electrical Codes 675 IAC 18 - Indiana Mechanical Codes 675 IAC 19 - Indiana Energy Conservation Codes 675 IAC 20 - Indiana Swimming Pool Codes It is also important to note that the discussion above is for buildings that require sprinkler protection per NFPA 13. By subscribing, you agree to our User Agreement and Privacy Policy & Cookie Statement. Chapter 31 Special Construction. x.]?QP_w2B7m(Z The pump sends hydraulic fluid from the reservoir to the cylinder, buried deep below the elevator shaft. It employs specialists in Mobile, Alabama, and has technical and news correspondents around the world. This list includes but is not limited to passenger elevators, freight elevators and escalators. A traditional elevator installation (which includes a machine room) requires access inside the elevator shaft. endobj Of particular importance is the location of the disconnecting means so it can be found by an individual who may not be familiar with the installation. Elevator power disconnect (with utility feed marking) located in the machine room or other permitted location David Herres David Herres holds a New Hampshire Master Electrician's license and has worked as an electrician in the northern part of that state for many years. IAEI News Magazine. In Part One of this series (ELEVATOR WORLD, April 2012), we began an examination of National Electrical Code (NEC) 2011 mandates for elevators and related equipment installations. The article stands apart from the rest of the code in the sense it exempts these categories of circuits from the general requirements for wiring in most occupancies, found in Chapter 3. This means that the majority of hydraulic type elevators will require this and traction type elevators need it only where the construction of the shaft is of combustible or limited-combustible material. The conduit alone can't act as the grounding means. American Society of Mechanical Engineers (ASME) Elevator Code ASME is often one of the first codes referenced by inspectors when it comes to elevators. %%EOF The International Building Code is updated every year. endobj SECTION3004 CONVEYING SYSTEMS 3004.1General. You must run a separate insulated grounding conductor with the feeder conductors from the electrical source to the elevator controller. In these installations, it is best to design the elevator controller so the elevator controller SCCR is adequate for the available fault current. Norm Nelson, who has served as Chief Operating Officer since 2018, will succeed Mr. Mason as CEO. These include the installation being in accordance with NFPA 101, Life Safety Code or the applicable building code as well as the space being dedicated to elevator equipment only, protection by smoke detectors or other automatic fire detection, separation from the rest of the building by construction with fire ratings specified by the applicable building code, and no materials unrelated to elevator equipment being stored in the space. Learn how turnkey solutions with maintenance included can be your saving grace as a property manager. When the elevator car is at the top landing, it is the length of cable as measured from the point of suspension on the car to the bottom of the loop.

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