🔍 Key Concepts

• Ampacity (current-carrying capacity) of a conductor • Relationship between wire size, resistance, and heat buildup • Difference between voltage rating of insulation vs. current rating of the conductor itself

💭 Think About

• Think about what actually causes a wire to overheat and possibly fail in an electrical circuit. • Ask yourself: which option directly limits how much power (amps) the wire can safely carry without damage? • Consider which characteristics are mainly properties of the metal conductor and which belong more to the insulation or overall cable design.

✅ Before You Answer

• Identify which option is directly tied to overheating risk in a conductor. • Separate what determines insulation breakdown from what determines conductor size. • Verify which factor is used in standard ampacity tables for selecting wire size in marine electrical systems.