Electric Welding Equipment and Power Tools: IS 302 Part 1 Scope and Compliance

Certain power tools and electric welding equipment within the voltage scope of QCO 2026 require mandatory BIS ISI mark certification under IS 302 (Part 1):2024. This guide clarifies scope and key requirements.

Products Within QCO 2026 Scope

• Electric drills and hammer drills (for household and similar use)
• Circular saws (household type)
• Angle grinders (within voltage scope)
• Sanders and polishers
• Jigsaws
• Electric screwdrivers
• Portable welding machines (arc welders within scope)

Important Scope Clarification: Industrial vs Household

IS 302 Part 1 and QCO 2026 cover "household, commercial, and similar use" appliances. Heavy industrial power tools that are clearly designed exclusively for industrial environments may be outside scope. However, the line between "commercial" and "industrial" is not always clear. If your product is sold through retail channels or can reasonably be purchased by consumers, assume QCO 2026 applies.

Key Safety Tests for Power Tools

Motor Thermal Protection

Power tool motors run at high load — drilling through concrete, cutting thick timber. The motor must cut off before reaching dangerous temperatures under stall or continuous high-load conditions.

Double Insulation (Class II)

Most portable power tools are Class II (double insulated) — they rely on double insulation rather than an earth connection. The double insulation must provide equivalent safety to an earthed Class I tool. IS 302 Part 1 has specific dielectric strength requirements for Class II portable tools.

Guarding

Rotating tools (drills, grinders) have specific guarding requirements. Guards must prevent access to rotating parts under normal use and must not create additional hazards during the work task.

Switch Safety

Portable power tools must have switches designed to prevent accidental starting. Deadman switches (that cut off when released) are required for some tool types.