ASME B107.37:2003 pdf download

ASME B107.37:2003 pdf download.PLIERS I WIRE CUTTERS/ STRIPPERS
1 SCOPE
This Standard provides performance and safety requirements for wire strippers, and the cutting and stripping functions of multipurpose tools, for use on solid and stranded copper wire. Inclusion of dimen- sional data in this Standard does not mean that all pliers described herein are stock production sizes. Consumers should consult with manufacturers concerning lists of stock production sizes. This Standard may be used as a guide by state authori- ties or other regulatory bodies in the formulation of laws or regulations. It is also intended for voluntary use by establishments that use or manufacture the tools covered.
5 REQUIREMENTS
5.1 Illustrations Illustrations shown herein are descriptive, not restic- tive, and are not intended to preclude the manufacture of strippers otherwise in accordance with this Standard. Dimensions are without comfort grips. 5.2 Material Material used in the manufacture of pliers shall be such as to produce pliers conforming to the requirements specified herein. 5.3 Design Pliers shall be similar to the figure to which reference is made; shall be proportioned in ail parts so as to be strong, durable, and easy to operate; and shall conform to the requirements specified herein. Strippers shall remove insulation in a neat and uniform manner without damaging the conductor, with a maximum of 35 lbf applied at the point of maximum handle curvature, or at the intended load point if there is no curvature. Pliers shall withstand applicable test procedures without cracking or breaking. 5.3.1 Type 1, Wire Strippers, Pivoting Handles. Type I pliers shail strip the insulation from the wire on the compression stroke, leaving the wire either fully or par- tidy stripped and free from damage of any sort.(u) Class 1, for general-purpose insulation, shall be capable of removing a minimum of 0.75 in. of insulation from general-purpose solid and stranded copper wire. Strippers shall consist essentially of a body, handles, stripping blades, serrated gripping jaws, and automatic stop return, and be similar to Fig. 1. Pliers shall be equipped with blades conforming to one of the sizes specified in Table 1. (1) The stripping blades shall have a sufficient num- ber of adequately spaced grooves to accommodate the range of wire sizes specified in Table 1 without the neces- sity of making adjustments in any way. (2) Pliers shall be provided with a device to stop return of the arms until after the stripped wire is removed. The stripper shall release the wire from the gripping jaws on partial release of compression and simultaneously hold the stripping jaws open to prevent crushing of the wire. Stripping and gripping jaws shall automatically return to the original stripping position as release of the compression is completed. Action shall be such that fine and stranded wires shall not be bent or mushroomed. (b) Class 2 shall be designed for removal of polytetra- fluoroethylene (Teflon@) insulation, MIL-W-16878 Types E (200″C, 600 V) and EE (200°C; 1,000 V), which requires an unusual amount of precision and rigidity in the strip- ping operation. Pliers shall consist essentially of a body, handles, stripping blades, gripping jaws, an automatic stop return, an optional short latch, and a strippinglength stop, and be similar to Fig. 2. Pliers shall be equipped with blades conforming to one of the sizes specified in Table 2.