2018年2月14日 — The metal wheels on the bridge trolley and hoist trolley provided a ground through contact with the metal track they run on. Overhead Crane
Article 610, Cranes and Hoists, Section 610.61 Grounding clearly states, “The trolley not be considered electrically grounded through the bridge and trolley wheels In general, as noted in the NEC at 200.6 and 250.119, grounded conductors are All exposed non–current-carrying metal parts of cranes, monorail hoists,
Article 610-Cranes and Hoists-of the 2005, 2008, and 2011 Editions contains provision 610.61, which requires, in part, that "[t]he trolley frame and bridge frame shall not be considered as electrically grounded through the bridge and trolley wheels and its respective tracks," and that "[a] separate bonding conductor
2013年4月4日 — All exposed non-current-carrying metal parts of cranes, monorail hoists, hoists, grounding conductor for electrical equipment (such as motors, motor What does the NEC 610 Overhead Crane/Hoist Grounding code mean?
Overhead Crane Grounding Requirements. Electric Code within Article 610, Cranes and Hoists, Section 610.61 Grounding. and bridge frame shall not be considered electrically grounded through the bridge 29 CFR 1910.304(g)(7) includes a requirement, as follows, for the cranes and hoists:" The metal parts of the
The above safety code incorporates NEC Article 610. This clearly states that crane trolley and bridge frames shall not be considered electrically grounded
Because cranes and hoists are motor-driven, Art. 430 is a good place to start. Article 610 begins its “amend and append” process with wiring methods. Type AC cable with insulated grounding conductor Intermediate metal conduit Guard runway conductors, and locate bridge contact conductors, so people can't
NEC grounding requirements consider the crane or hoist with all its Metal-to-metal contact is required between all surfaces including the trolley wheels and bridge. The bonding of all conductive surfaces by metal-to-metal contact is not to be 29 CFR 1910.179 and NEC Article 610, Part F, provide additional electrical
2017年1月4日 — Leaving the bridge rail unpainted can create a ground from the steel hoist be considered as electrically grounded through the bridge and trolley wheels 2011. www.codebookcity.com/codearticles/nec/necarticle610.htm
ARTICLE 610 — CRANES AND HOISTS 610.3 installed using ?exible cord, 12 AWG or larger conductors, with an insulated equipment grounding conductor. of a rigid metal conduit, intermediate metal conduit, or electrical metallic tubing (B) Taps. overhead traveling crane shall not require individual motor overload
Cover of McGraw-Hill's National Electrical Code 2017 Handbook, 29th The definitive guide to the 2017 NEC®—thoroughly updated to reflect the In general, the wiring on a crane or a hoist should be raceways, or Type AC with a grounding lengths of flexible conduit or metal-clad cable and even open conductors may
2005年3月30日 — Per Article 610.61 of the NEC, “The trolley frame and bridge frame shall not be considered as electrically grounded through the bridge and trolley wheels NEC Article 610-14 requires the minimum allowable conductor size be rated cover directly but has a more pronounced affect on metal components.
作者：A Bhatia · 被引用次数：2 — These need grounding for their protection. Per NEC 610; Overhead Crane/Hoist Grounding code, all exposed non-current- carrying metal parts of cranes, hoists
NEC grounding requirements consider the crane or hoist with all its The bonding of all conductive surfaces by metal-to-metal contact is not to be 29 CFR 1910.179 and NEC Article 610, Part F, provide additional electrical requirements clearances shall be maintained between equipment and electrical overhead lines:
Article 430 provides the requirements for motors. Table 430.5 lists “Other Articles,” based on equipment/occupancy. Article 610 is one of those other Articles, and it
Handles factory pre-wiring and pre-assembly options for festoon systems Shoe is guided by the V-contact in the metal bar A bonding bar is required for all overhead cranes built after 2004. Conductor Bar Rating – Per NEC Article 610-14, the bar must accommodate 100% of the current of all the largest motors
2005年11月30日 — With reference to NEC section 610:31/32: I have a situation where an electric in an electrical room several hundred feet from the hoist & trolley. it be required to be located at the ground level, within sight of the hoist, Where a monorail hoist or hand-propelled crane bridge installation (3) Metal Dusts.
Article 250, Grounding. Article 610, Cranes Under Hung Single-Girder Overhead Traveling Crane: CMAA No. 74 and ANSI Electrical: In accordance with NFPA 70, NEC Article 610. co CONTACTOR to provide metal weights. Test and
Do you need the use of a second hoist on the bridge crane? 10) Electrical Requirements - Specify the circuit voltage shall not exceed 600 volts Examples include hot metal carriers, twin hook hoists used to move hard to from becoming fouled when the block is lying on the ground with ropes loose. 10) NEC 610-14.
