elevator machine room requirements nec

Hydraulic Machine Room Requirements Keywords. The electricians work and equipment placement shall be coordinated with the elevator contractors equipment placement.

Nec Article 620 Elevators Part 2

This is typically accomplished by a shunt-trip device.

. Another important electrical system design. For hoistway pit and machine-room lighting must be located How unsupported lengths of traveling cables are measured In Part One of this series ELEVATOR WORLD April 2012 we began an examination of National Electrical Code NEC 2011 mandates for eleva-tors and related equipment installa-tions. Also allow adequate space to.

The elevator machine and controller must be located in the elevator machine room. We resume with a look at wiring. Elevator driving machines motor generator sets controllers and auxiliary control equipment shall be installed in a room or enclosure set aside for that purpose.

Another important electrical system design consideration for supplying power to multiple elevators is NEC 62062. Where elevator hoistways elevator machine rooms control rooms and control spaces containing elevator control equipment are protected with automatic sprinklers a means installed in accordance with Section 214 of NFPA 72 shall be provided to disconnect automatically the main line power supply to the affected elevator prior to the application. Cab length is at least 51 with at least 54 from the back of the cab to the face of the door.

It is interesting to note that this section also requires each 125V single-phase 1520A receptacle in machine rooms control spaces machinery spaces and. Hydraulic Machine Room Requirements Author. 762mm and a minimum height of 6 ft 183m for machine rooms and a minimum height of 30 in.

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 70032 70127 or 70854. Selective coordination is also required for multiple elevators per NEC 62062. Space heating is rarely required and thus has not been addressed here.

Where more than one disconnect is required for a multi-car group the disconnects shall be adjacent to each other with the first disconnect located within 610 mm 24 inches of the open side of the machine. NEC 62037 covers wiring in hoistways machine rooms control rooms machinery spaces and control spaces related to the elevator. Control room must be of adequate size to provide clearances around and between equipment as required by code.

In Oregon Raceways and conduits for the connection of elevator devices shall only enter the machine room to the extent necessary to connect the devices attached thereto. Wide or the width of the equipment whichever is greater. This clear working space must be 30 in.

In all cases the working space must permit at least a 90 opening of. Answers are based on the 2020 NEC. You also have to take into account NEC required clearances for equipment that may be serviced while energized.

Electrical Component NEC Clearances. 762mm for other spaces specified in Sections 3011e2 and 3011e3. An elevator machine room must be provided for each individual elevator or elevator group.

ANSIASME A171 28332 Safety Code for Elevators and Escalators and the NEC 62051B require power to an elevator be shut down prior to the release of water in the elevator shaft or machine room. Space is provided for a wheelchair user to enter reach controls and exit the elevator car ADA 4108 Door opening is at least 36. Minimum standards for machine room enclosures.

C12 ELEVATOR MACHINE ROOM REQUIREMENTS 1. ASME Code requires that the temperature within an elevator equipment room be maintained between 55 and 110 degrees F non-condensing. It need not be exactly centered on the equipment and working spaces of adja-cent pieces of equipment may overlap.

Clearances around all electrical equipment in the elevator machine room shall comply with NEC 110-26 electrical clearances requirements. A Have a minimum width of 30 in. For facilities not located in a flood zone locate hydraulic elevator machine rooms on the lowest landing served by the elevator.

Allow at least 36 42 for 480V on the service side. Cab width for side opening doors is at least 68. Provide a legally constructed and enclosed control room adequately lighted and conditioned to maintain temperature between 32 to 104 Fahrenheit relative humidity is not to exceed 95 non-condensing.

GFCIs in elevator pits. Access doors shall be provided for all elevator machine rooms or enclosures and shall conform to the following. These regulations are not intended to supersede applicable local building codes establishing higher standards.

HVAC Equipment MUST NOT be mounted above ANY elevator equipment. AHJ requirement Flexible metal conduit flexible nonmetallic conduit and hard service cords shall be permitted in lengths not to exceed 6 foot in machine rooms control rooms hoistways and. Emergency lighting shall be installed in the machine room control room space.

Where machine rooms are provided the disconnecting means required by 62051 shall be located within 610 mm 24 inches of the open side of the machine room access door. Schumacher Elevator Company Subject. Live parts not an issue in elevator machine rooms.

Schumacher Elevator Company hydraulic machine room hydraulic elevator elevator machine room hydraulic elevator machine room machine room dimensions control room hydraulic control room elevator control room. Elevator equipment manufacturer to ensure safe and normal operation of the elevator. The temperature and humidity range shall be permanently posted in the machine room.

Shunt-trip voltage monitoring and control circuit tied into Fire Alarm System. NEC 62062 requires the elevator disconnecting means fused switch or circuit breaker to selectively coordinate with all supply-side overcurrent devices. The basic requirement is for minimum clear distances of various depths for equipment operating at 600 V or less nominal depending upon voltage to ground and lateral distance to insulated or grounded surfaces or exposed live parts not an issue in elevator machine rooms.

Given that elevator equipment produces a substantial amount of heat space cooling is typically required. In the OESC this section was amended to address conduits and. Answers are based on the 2020 NEC.

Selective coordina-tion is also required for multiple elevators per NEC 62062.