What size large conductor is typically not allowed for push-in connections on devices?

In electrical systems, push-in connections are designed to accommodate specific conductor sizes to ensure safe and reliable connections. The conductor size that is typically not allowed for push-in connections is larger conductors, such as 8 AWG copper.

Push-in connections are generally intended for smaller gauge wire because they rely on a spring mechanism that grips the wire securely. Larger conductors, like 8 AWG, may exceed the capacity of the push-in connection mechanism, leading to a risk of loose connections or insufficient contact area. This can result in overheating or electrical failures.

On the other hand, 10 AWG, 12 AWG, and 14 AWG copper conductors are commonly used and are within the acceptable range for push-in connections. These sizes can be securely fastened by the push-in mechanism, ensuring a solid electrical connection. Hence, understanding the limitations of push-in connections helps in selecting the appropriate conductor size to maintain safety and functionality in electrical installations.