Which organization developed the formulas to determine insulated and bare conductor current withstand ratings?

The Insulated Cable Engineers Association (ICEA) is recognized for developing the formulas used to determine the current withstand ratings of insulated and bare conductors. ICEA plays a critical role in providing standards and guidelines specifically related to insulated cables, including their performance under various electrical and thermal conditions. The association focuses on ensuring that the cables can withstand the currents they are designed for, which is essential for safety and reliability in electrical installations.

Other organizations like the National Electrical Code (NEC) focus on regulations and safety standards for electrical installations but do not specifically create ratings or formulas for conductor performance. Underwriters Laboratories (UL) is known for testing and certifying products, while the International Electrotechnical Commission (IEC) develops international standards for electrical and electronic technologies, but neither of these organizations is responsible for the specific current withstand ratings as developed by ICEA.