Overhead & Gantry Cranes - Electrical Requirements

In addition to the general guidelines presented earlier, there are electrical safety requirements for cranes and other hoisting equipment. They include but are not limited to the following:

• The control circuit voltage must not exceed 600 volts for AC or DC.
• The voltage at pendant push-buttons must not exceed 150 volts AC and 300 volts DC.
• Where multiple conductor cable is used with a suspended pushbutton station, the station must be supported in some satisfactory manner that will protect the electrical conductors against strain.
• Pendant control boxes must be constructed to prevent electrical shock and must be clearly marked for identification of functions.
• Equipment must be situated in a way that avoids exposure to live parts and eliminates the possibility of accidental contact during normal operations and operating conditions.
• Electrical equipment should be protected from dirt, grease, oil, and moisture.
• Guards for live parts must be substantial and located so that they cannot be accidentally deformed and make contact with the live parts.

To learn more about Crane, Derrick & Hoist visit our Crane, Derrick & Hoist Safety Online Training web page.