Final answer:
Aluminum wire must be stripped carefully due to concerns such as its higher rate of thermal expansion and oxidation. Special techniques are needed when using aluminum wires and components to ensure safety and efficiency.
Step-by-step explanation:
Aluminum wire must be stripped very carefully because of a few concerns that must be addressed when using aluminum. One concern is that aluminum has a higher rate of thermal expansion than copper, which can lead to loose connections and a possible fire hazard. Additionally, the oxidation of aluminum does not conduct and can cause problems. Therefore, special techniques must be used when using aluminum wires and components.