Which tool is most suitable for melting splice sleeves during wiring repairs?

• A. Shielded butane torch
• B. Soldering iron
• C. Heat gun
• D. Hair dryer

Answer: (A)

For shrinking heat-shrink splice sleeves, you need a heat source that is direct, controllable, and localized. A shielded butane torch provides a focused flame you can aim precisely at the sleeve, and the shield helps protect adjacent wires from radiant heat and accidental scorching. This lets the tubing contract evenly around the splice quickly and with less risk to surrounding insulation. A heat gun, while able to shrink tubing, is broader and harder to control in tight spaces, which can lead to overheating or damage. A soldering iron concentrates heat on a tiny area and isn’t suitable for shrinking a sleeve around a splice. A hair dryer won’t reach the necessary temperatures and would be inefficient.