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. CHAPTER 27 ELECTRICAL, 2019 California Building Code, Title 24, Part 2 Proper selective coordination in a multi-elevator installation on the same feeder ensures if one elevator develops a fault, the other units will not be shut down. Wiring requirements are outlined in Part III of this Article. Chapter 30: Elevators and Conveying Systems, Chicago Building Code 2019 If a smoke detector goes into alarm, it signals the elevator to go into Fire Recall Function, at which point the controller directs the elevator cab to travel to its pre-programmed designated landing, open its doors, and remain stopped there until the alarm clears. We resume with a look at wiring methods, overcurrent protection, grounding and other NEC provisions as they relate to these installations. Since 1953, Elevator World, Inc. has been the premier publisher for the global vertical transportation industry. 7 0 obj Minnesota's elevator code consists of the following: Safety Codes for Elevators and Escalators. 8 0 obj 2701.1Scope. . With respect to such Occupancy Groups B, E and R-1, the following equipment, where such equipment is required by this code, shall be provided with an emergency power system: Exit signs and means of egress illumination required by Chapter 10; Elevator car lighting; Checking off the items on this list will help you to ensure that you have met important national elevator codes. It is further stated that the disconnecting means are not to disconnect the branch circuits required in sections 620.22, 620.23 and 620.24. For just $7.99 per month, you can gain access to more than 5,000 articles from all Elevator World Publications, this includes EW Global, EW Europe, EW India, EW Middle East, EW Turkey, and EW UK. These are the individual branch circuits required for car lighting, receptacles, auxiliary lighting and ventilation on each elevator car; individual branch circuits for machine-room and similar location lighting and receptacle; and branch circuits for hoistway pit lighting and receptacle(s). NEC 620.62 requires the elevator disconnecting means (fused switch or circuit breaker) to selectively coordinate with all supply-side overcurrent devices. These are covered for generic, non-elevator specific use in earlier articles, 376 and 378, in Chapter 3, Wiring Methods and Materials. 2022 Construction Codes - Buildings - New York City The two main types of elevators are hydraulic and traction. Furthermore, at least one 125-V, single-phase, 15- or 20-amp duplex receptacle is to be provided in each machine room or similar location. The code does not include design specifications or instructions like those found in installation manuals. <> stream Performance & security by Cloudflare. Video surveillance is a common life safety tool for property managers. By subscribing, you agree to our User Agreement and Privacy Policy & Cookie Statement. The many codes and guidelines that regulate the electrical design of an elevator can seem overwhelming, and dealing with the electrical inspector, elevator inspector, and Fire Marshal can be even more intimidating. They are as follows: 1. Additionally, ampacities of the individual conductors and flame-retardant properties of the overall cable are important factors. Modern electronic elevator controls can be sensitive to temperature shifts. It states an elevator is permitted to be run by an emergency or standby power system. The code notes that elevator rails or other hoistway equipment are not to be used as the grounding conductor for lightning-protection systems. 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. *p*"NN~~Ry1tWU]]>00~00l 00Am7aaaff%2=? Another important electrical system design consideration for supplying power to multiple elevators is NEC 620.62. Article 620 covers the installation of electrical equipment and wiring used in connection with elevators, dumbwaiters, escalators, moving walks, platform lifts, and stairway lifts. Always verify all conditions and requirements with the state and the AHJ where the installation is taking place. P. The provisions of this chapter and NFPA 70 shall govern the design, construction, erection and installation of the electrical components, appliances, equipment and systems used in buildings and structures covered by this code. NEC Article 620 Part V, Traveling Cables, is driven by two major issues. The Safety Standard for Belt Manlifts is the ASME A90.1-2015. As always, the best advice in all instancesdo your homework, communicate often, and document decisions made. The elevator rails, like the ground system of the entire building electrical structure, are to be bonded to the lightning-system ground electrode so these all remain at the same potential even during a lightning event, ensuring side flash does not occur. In addition, requirements for selective coordination and shunt tripping should be complied with as needed for the installation. ASME A17.5/CSA B44.1-2019: Elevator And Escalator Electrical Equipment is available on the ANSI Webstore. GFCIs in Elevator Pits, Receptacles and More - Electrical Contractor It is also important to note that the discussion above is for buildings that require sprinkler protection per NFPA 13. For elevators with battery lowering systems, an additional contact must be supplied and wired to disable the battery lowering system when the elevator disconnect is manually operated for maintenance. 222-60 222-61 Scope Enforcement Construction Permits Plans and Specifications Safety Tests and Tags Protection of Openings in Floors Elevator Electrical Installations by Licensed Contractor Mechanical Brakes Drains in Elevator Pits Door Interlock or Contact and Lock Gates and Doors Freight Elevators SUBCHAPTER 1 ELECTRICAL INSTALLATIONS And as the designer, you can become the fulcrum on which all of these requirements and authorities exert their leverage, but an understanding of elevator basics can help you handle the pressure. This will normally require you to vent the room with a fire/smoke damper and include smoke detector signals in the control logic. (Cross-sectional areas of conductors are given in Chapter 9, Tables 5 through 8. 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. You must run a separate insulated grounding conductor with the feeder conductors from the electrical source to the elevator controller. 3 0 obj Constructional Stretch and Hoist-Rope Tension . ASME A17.1 does not permit water discharge in elevator shafts until electrical power to the elevator cab has been shut down. In such cases, it's economically justifiable to specify a traction type elevator. We're honored to be recognized by our employees and The Dallas Morning News by making the daily newspapers Top 100 Places to Work list for the 3rd year in a row, falling in at 28th in the midsize companies category. Although it can seem like a pain, the truth is they exist to encourage the overall safety and comfort of your propertys tenants- something that is undeniably important. The Safety Code for Existing Elevators and Escalators is the ASME A17.3-2015. NEC 620.62 requires the elevator disconnecting means (fused switch or circuit breaker) to selectively coordinate with all supply-side overcurrent devices. American Society of Mechanical Engineers (ASME) Safety Codes for Elevators - A17.1, A17.3, A17.4, A17.5, A17.6, A18.1 National Fire Protection Association (NFPA) - 13, 70, 72, 101, 252 International Building Code (IBC) Guide for Inspection of Elevators - A17.2 Standards for the Qualification of Elevator Inspectors - ASME QEI-1 However, this can vary depending on building conditions and exterior grade. x g*P1S0@ _j !wU!5corVIaVC.|<= This standard also covers maintenance and testing requirements for existing elevators. These must also be insulated for the maximum voltage applied to any conductor within the cable or raceway system. The standard for Elevator and Escalator Electrical Equipment is the ASME A17.5-2014. Corporate Office (All intentionally grounded elements must be held at equal potential.) Feeders may be installed within the hoistway where the elevator has a driving-machine motor in the hoistway or on the car or counterweight. This section also adds emergency lighting to the list of elevator backup power requirements. United States Elevator Code and Regulations | 2022 endobj 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. Good documentation is of key importance to recalling what decisions were made and why. They are permitted to be run without raceway when used inside the hoistway, on the elevator car, hoistway wall, counterweight, or controllers and machinery located inside the hoistway, provided they are in their original sheaths. It employs specialists in Mobile, Alabama, and has technical and news correspondents around the world. PDF Elevator Electrical Requirements Kings III is an ETL Listed Central Station, providing code compliant all-inclusive emergency help phone solutions for all areas of your property. Overcurrent devices protecting these branch circuits are to be located in the machine room or similar location. Traction elevators are typically faster and more energy efficient than hydraulic elevators, and are often used for high-rise buildings. In order to comply, the electrical system designer must determine the maximum available fault current at the elevator disconnecting means and assure the elevator disconnecting means overcurrent protective device will clear any overcurrent condition, up to the maximum available fault current, before any upstream overcurrent devices will operate. 636 0 obj <>/Filter/FlateDecode/ID[<3E99A7B842E11E4FB63B954D41726BE2><6699822AC16E0F4781D4BCC76F310E14>]/Index[615 32]/Info 614 0 R/Length 105/Prev 243084/Root 616 0 R/Size 647/Type/XRef/W[1 3 1]>>stream The same figure applies to nonmetallic wireways. 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. If the smoke detector at the designated landing goes into alarm, the elevator will stop at a predetermined alternate floor, which is usually the floor above the designated floor. above the seal plate, adjacent to the ladder. Were in the home stretch! The action you just performed triggered the security solution. City of Los Angeles Elevator Code (Chapter 9, Article 2 of the Los Angeles Municipal Code) which is based on the ASME A-17.1-1971 and the California Code of . "- L_bM xmZ@1sH6A=D"A i(/B(] {o Any hoistway not meeting those requirements must have an upright, pendent, or sidewall spray sprinkler installed at the top. The vast majority of equipment serving the elevator is located within this room (i.e., elevator controller). NEC Article 620 Part VI, Disconnecting Means and Control, is rather exacting. 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. /Font <>>> | Soomaali While the provisions highlighted here from NFPA 13 are relatively straightforward there is added complexity of elevator codes as well as local amendments in many jurisdictions. 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. Adhering to the requirements will ensure a hazard-free electrical installation. Rules of the Indiana Fire Prevention and Building Safety Commission - DHS 12 0 obj 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. 11 0 obj Limit switches placed throughout the height of the shaft communicate with the controller and stop the cab at each landing. For circuit breakers, time-current curves must be consulted as well as the circuit breaker manufacturers selective coordination tables. It is further specified the machine-room lighting switch be located at the point of entry.
