): Used for heavy appliances like electric ovens or power showers. Large Cables (e.g., 50mm250 m m squared
Standard charts usually assume an ambient air temperature of $30^\circ C$. If you are installing cables in a boiler room or a hot climate where the temperature is $40^\circ C$, the cable starts "hotter," meaning it has less headroom before it overheats. This requires a correction factor, lowering the allowable current. cable size current carrying capacity
This guide breaks down the relationship between cable size and current carrying capacity (ampacity) and the factors that influence them. 1. What is Current Carrying Capacity (Ampacity)? ): Used for heavy appliances like electric ovens