What is the maximum size conductor permitted for devices where the "push-in" connection method is utilized?

The maximum size conductor permitted for devices using the "push-in" connection method is typically limited to 14 AWG copper (solid) conductors. This limitation is primarily due to the design of the push-in connection, which is engineered to accommodate smaller gauge wires that can securely fit within the connection mechanism without the risk of damage. Using larger conductors may compromise the connection's safety and reliability, as the increased size can lead to poor contact, overheating, or potential failure of the connection.

In standard electrical practices, connections are made following the National Electrical Code (NEC) guidelines and manufacturer specifications, which often stipulate a maximum size for push-in connectors to ensure optimal performance and adherence to safety regulations. This ensures that the structure of the device and the integrity of the electrical system is maintained.