Can a neutral conductor be uninsulated?

Yes, a neutral conductor can be uninsulated, but this is generally not recommended for safety reasons. An uninsulated neutral conductor can pose a risk of electrical shock or short circuits if it comes into contact with conductive materials or surfaces. In most electrical systems, neutral conductors are insulated to ensure safety and to prevent unintended grounding or short-circuiting. Proper insulation helps to maintain the integrity and safety of the electrical system.