To prevent electrocution from improper connections through electrical outlets including Arc Fault Circuit Interrupters, Ground Fault Circuit Interrupters and power strips, plugs of matching configuration should be used. The process optionally also comprises the further step of reacting 4-Methyl-2,3,5,6-tetrafluobenzyl alcohol with cis-Z-3–2,2-dimethylcyclopropanecarbonyl chloride to the form tefluthrin. A fluorochemical may be at least partially impregnated into the fabric or yarn prior to applying the strengthening polymer material in order to further enhance the shedding properties of the yarns or fabric. The fabric produced using the low shrinkage polyamide fiber of the present invention has high tensile strength and tear strength, and excellent quality, and thus, is useful as a fabric for airbags. The fixed contact comprises a base portion received in the insulative housing. A metallic porous body having a three-dimensional network structure and having an average pore diameter of 50 \u03bcm-1 mm and a porosity of not less than 80% is joined to a metal substrate such as metal foil by solid phase diffusion treatment to form an integral porous member.