NCCER Electrical Level 2 2025 – 400 Free Practice Questions to Pass the Exam

When stripping conductors, it's important to ensure that the insulation is cut in a way that prevents frayed pieces from extending past the point of cut-off. Properly stripping the insulation helps maintain the integrity of the conductor and reduces the risk of electrical shorts or contact with other conductive materials.

When insulation is left frayed, it can create potential points for arcing or short-circuiting, which could lead to hazardous conditions. By ensuring there are no frayed pieces, you maintain a clean and professional connection, improving the safety and reliability of the electrical system.

Additionally, removing all insulation completely is not advisable as it would expose the conductor to risk and negate the protective benefits that insulation provides. Cutting the insulation too long can also cause complications, and leaving extra insulation for flexibility might not be suitable because it can also create a risk of accidental contact. Therefore, the best practice is to ensure that the insulation is cleanly cut so that no frayed pieces are present.