N-26 Wire Management Products Specifications are subject to change without notice. www.hubbell.com/bryant/en/ Wire Mesh Grip Materials Material Features Product Group Galvanized steel wire High strength Pulling grips Not subject to continuous outside environment Splicing grips and bus drop grips Tin-coated bronze wire Corrosion-resistant for normal outside areas Non-magnetic Moderate strength Support grips Stainless steel wire (302/304) High strength Support grips Corrosion-resistant Strain relief grips Selection Table for Multiple Cables of Different Diameters Inches (cm) There are many variables associated with the use of wire mesh cable grips. Working load is an estimation of several factors including tension, cable diameter, number of cables gripped, gripping surface and more. Safety factors associated in the product’s use must be considered together with the effects of abrasion, corrosion, prior use and abuse and other variables specific to the application. The appropriate breaking strength of a Bryant Economy Cable Grip represents an average calculation based on data established from actual testing performed in our engineering laboratories. Under normal usage conditions, our recommended factor of safety is five for pulling grips and ten for support grips. Any warranty as to quality, performance of fitness-for-use of the grips is always premised on the condition that the published strengths apply only to new, unused grips, and that such products are properly stored, handled, used, maintained and inspected by the user at a frequency appropriate for the use and condition of the grip. Example Grip Style Approx. Breaking Strength (Lbs.) Safety Factor Max. Recommended Load (Lbs.) Catalog Number Pulling 27,200 5 5,440 PHS200 Support 1,610 10 161 SPS125U Note: The maximum recommended working load is the greatest tension to be exerted on a grip for any application, with a margin of safety to protect against unforeseen and unusual circumstances. Applicable Code Requirements: Bryant Economy Cable Grips meet the following requirements: NEC® 300.19 Support of conductors in vertical raceways NEC® 350 Liquidtight flexible metal conduit termination NEC® 400.14 Strain relief at joints and terminals NEC® 400.17 Flexible cord and cable protection NEC® 501.10 (B) Class I, Division 2, Tensile stress avoidance at termination fittings NEC® 502.10 (A) and (B) Class II, Division 1 and 2, Tensile stress avoidance at termination fittings NEC® 503.10 (A) and (B) Class III, Division 1, Tensile stress avoidance at termination fittings How to choose the correct grip size: 1. Find the grip circumference range by measuring the circumference of the bundle of different diameter cables to be gripped (see illustration). 2. Divide the bundle circumference by 3.14 to determine the diameter. 3. Choose a grip offering a range of cable diameters the same as the cable diameter. For cables of equal diameters Under “number of cables in one grip”, 昀椀nd the diameter of your single cable in vertical column, see page N-27. Read the grip diameter range to the right. If your diameter is the maximum of the range shown, go to the next larger size for split grips, stay with the same size for closed grips. Example: 3 cables, each with .89 (2.26) diameter, for a closed grip select the 1.50-1.74 (3.81-4.42) range, for a split grip select the 1.75-1.99 (4.44-5.05) range. NEC® is a registered trademark of the National Fire Protection Association (NFPA). WARNING Under normal conditions, Bryant recommended factor of safety is five for catalog listed pulling grips, and ten for catalog listed support grips. Safety and Working Load Factors for Wire Mesh Grips Technical Data CAUTION When a grip is used on multiple cables, the tail end of the grip should be banded after positioning on the cables.
