Question 18 (Mandatory) (1 point) An electrical circuit has a insulation made of XLPE. What is the correction factor for ambient temperature (Ca) when it is laid in conduit through an area with ambient temperature at \( 40^{\circ} \mathrm{C} \) ? 0.91 0.87 0.85 0.94

To determine the correction factor for ambient temperature (\(C_a\)) for XLPE insulation in an electrical circuit, we typically refer to standard tables or guidelines provided by electrical codes or manufacturers. Given that the ambient temperature is \(40^{\circ} \mathrm{C}\), we need to find the corresponding correction factor from the options provided. 1. **Identify the standard correction factors**: Generally, correction factors for XLPE insulation at various temperatures are provided in tables. For temperatures above \(30^{\circ} \mathrm{C}\), the correction factors typically decrease. 2. **Check the options**: The options given are: - 0.91 - 0.87 - 0.85 - 0.94 3. **Determine the appropriate factor**: Based on standard practices, the correction factor for XLPE at \(40^{\circ} \mathrm{C}\) is usually around \(0.87\) to \(0.91\). 4. **Conclusion**: The most appropriate correction factor for an ambient temperature of \(40^{\circ} \mathrm{C}\) is likely \(0.87\). Thus, the correction factor \(C_a\) when the ambient temperature is \(40^{\circ} \mathrm{C}\) is **0.87**.