Branch circuits supplying electric signs, except neon tubing installations, should not exceed which ampere rating?

Branch circuits supplying electric signs, excluding neon tubing installations, are typically rated to not exceed 20 amperes. This rating is specified to ensure safety and prevent overheating within the circuit, thereby reducing the risk of electrical fires or equipment failure. Using this ampacity allows for adequate handling of current while also providing a margin to account for potential overload situations, particularly in installations where electrical signs may be exposed to various environmental conditions or may experience fluctuations in power demand. Understanding the permissible amp ratings helps ensure compliance with electrical codes and enhances the reliability of electricity supply to signage.