Power and Utilities | Rigging | How To's | Safety and Training | By Christie Lagowski | Jan 24, 2018
In the power and utility industry, there are some distribution and transmission applications that require linemen to use two wire grips in tandem.
One application where this may be necessary is when you need to ensure the safe working load of a single grip is not exceeded. When using two grips together, the grips will share the weight of the load, increasing the safe working load limit of each grip by 1-1/2 times the lower capacity wire grip.
Another application where you may need to use two wire grips in tandem would be when the cable is at risk of being deformed. To prevent deformation, Columbus McKinnon suggests using two grips with ACSR or AAC conductors if the load will exceed either 12,500 lbs. (5,670 kg) or 40 percent of tensile strength of the conductor – whichever is less. When using ACSS conductors, we suggest utilizing two wire grips if the load will exceed 10,000 lbs. – or 40 percent of the strength of the conductor – again, whichever of the two is lesser.
Columbus McKinnon offers a large selection of hoist and rigging products designed for utility transportation and distribution applications. Learn more.
Need help choosing the right wire grip for your application? See our blog article.
Learn how to properly inspect your lever strap hoist here.
This article is not intended to be a detailed instructional manual for performing these procedures. Always consult your company or industry procedures, as well as the manuals for the equipment, including, without limitation, the equipment manufacturer’s guidelines, prior to performing these procedures. Columbus McKinnon Corporation disclaims any liability, in tort, contract or otherwise, for any loss or damage arising from use of the information in this article, including but not limited to indirect or consequential damages, lost profits or goodwill, or punitive damages.
Christie Lagowski is a Communications Manager at Columbus McKinnon Corporation. She has 6 years of experience marketing hoists and rigging products as well as crane systems and components. Christie has marketed a variety of industrial products, ranging from lifting solutions to glass technology as well as health and safety products.
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