Abstract: A method for grounding a plurality of snap switches arranged in a wiring box to a common ground source includes: connecting together in series the equipment grounding terminal of each snap switch with sheathed connecting wires such that each equipment grounding terminal of each snap switch is disposed in electrical communication only with the equipment grounding terminal of each other snap switch, the electrical communication forming an electrical network; and, connecting with a sheathed lead grounding wire the electrical network to a common ground source of the wiring box such that each snap switch is grounded. An electrical switch apparatus of the present invention includes a wiring box and plurality of snap switches mounted to the wiring box. Each snap switch includes an equipment grounding terminal. The electrical switch apparatus also includes a plurality of sheathed connecting wires.

Abstract: A phenol-aldehyde resole resin is disclosed which is produced in the presence of a plasticizing amount of a phenolic ester reaction product of an unsaturated fatty acid with a phenol. These compositions are characterized by improved flexibility and moisture resistance. The resins are especially useful for impregnating cellulosic materials. Particular utility has been found for these compositions as filter elements wherein the impregnated cured paper can be corrugated after curing without cracking to provide an economical and superior filter paper.