We illustrate the typical connector used in some receptacles and switches that accept a simple push-in connection usually found on the rear of the device. This article illustrates and explains possible electrical failures and fire risk when using the push-in rear connectors on some back-wired electrical devices such as receptacles and switches. The wire has not been pushed fully into the connection as I wanted to show the diameter of the wire entering the push-in connector opening.
RECEPTACLE WIRE-TO-CONNECTOR CONTACT AREA SIZESĪt left we illustrate a #14 solid copper wire being pushed into the backwire opening of a common electrical receptacle. WIRE-TO-CONNECTOR LIMITATIONS in PUSH-IN ELECTRICAL CONNECTORS. BACKWIRED DEVICE SPRING CLIP 1960 DESIGN. Performance of Push-In, Back-Wired Electrical Devices: receptacles & switches Article Series Contents We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. This article series explains receptacle types, receptacle grounding, connecting wires to the right receptacle terminal screws, electrical wire size, electrical wire color codes, and special receptacles for un-grounded circuits. Here we describe the types of backwire connectors used on electrical receptacles and light switches and we explain the safety and performance questions that may arise. 
Using the back-wire or push-in type connection points on an electrical receptacle or switch may be just fine, or it may not be reliable nor safe, depending on the age and type of back-wire connector provided. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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