Precision Wire Strippers

The goal of stripping a wire is to remove the insulation without touching the copper. A single nicked strand in a 20 AWG wire significantly reduces its ampacity and creates a mechanical stress point that will snap under vibration.

Types of Stripping Tools

1. Manual Scissor/Plier Style

The standard tool. Look for CNC machined stripping holes. If the tool is stamped, the edges are usually blunt and will tear the XLPE insulation rather than cutting it. These require the user to pull the insulation off manually. Brands like Knipex and Klein excel here.

2. Automatic / Self-Adjusting

These tools clamp the wire and strip the insulation in a single squeeze. They are incredibly fast for production work.

Blade style: Uses a flat blade that presses into the insulation. Can struggle with tough XLPE (like SXL) and may slip.
Form-fit style: Uses replaceable cassette blades sized exactly for the wire gauge. Extremely precise, zero risk of nicking strands. (e.g., Knipex 12 40 200).

3. Thermal Strippers

Used primarily in aerospace and mil-spec harnesses (Tefzel wire). They melt a ring around the insulation. Overkill for standard automotive, but guarantees zero strand damage.

Dealing with Thin-Wall (TXL) Wire

TXL wire has a very thin wall of tough insulation. Cheap automatic strippers often lack the grip to pull the slug off, or the blades are too dull to score the XLPE cleanly, resulting in a stretched, frayed mess at the termination point. A high-quality manual stripper is often more reliable than a cheap automatic one for TXL.