Which combination correctly matches the material and sizes used for insulating banding?

• A. Stainless steel - 1/4 and 1/2
• B. Stainless steel - 1/2 and 3/4
• C. Aluminum - 1/2 and 3/4
• D. Steel - 1/2 and 3/4

Answer: (B)

Insulating banding needs a material that is strong and resistant to corrosion so it stays secure and durable in outdoor conditions. Stainless steel provides that combination of high strength and excellent corrosion resistance, which is why it’s the typical pick for banding. The widths 1/2 inch and 3/4 inch are standard sizes that cover common conductor and insulator fittings without being too bulky. Other materials like aluminum or plain steel don’t offer the same balance of durability and resistance for this use, making stainless steel in these two widths the best match.