Levitonâ€™s line of commercial and industrial switches has an ergonomic external back-wire clamp design on many of its single-pole and three-way switch models. The new external clamp design offers faster and more convenient installation. By eliminating internal back-wiring holes, installation is streamlined. The installer inserts the wire under the external clamp, which is now serrated for better gripping retention, and tightens the terminal screws to the proper torque value. The external clamp design also facilitates side wiring because the terminalâ€™s screws install securely in place and are not â€œfloating.â€ This feature significantly eases installation. Because the clamp is external, visual confirmation that the wires are securely in place can be made more easily. Leviton Manufacturing Co.
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