NF C 61-314 Figure C.1 Grip Test Reference Gauge

This NF C 61-314 Figure C.1 Grip Test Reference Gauge is precision-engineered to the exact dimensional specifications defined in NF C 61-314 Figure C.1, the standardized reference for grip testing of 6A/250V and 16A/250V household and similar electrical socket systems. The gauge serves as a critical verification tool to confirm the impossibility of single-pole insertion of plugs, a fundamental safety requirement to prevent electric shock hazards and ensure compliance with NF C 61-314 standards. By providing a standardized dimensional reference for grip testing procedures, this gauge ensures that plugs and corresponding sockets maintain the required dimensional and functional criteria, thereby safeguarding electrical product safety and reliability in residential and commercial applications.

Specifications

• Full compliance with NF C 61-314 standard requirements, specifically aligned with Figure C.1 specifications for grip test reference
• Engineered to prevent single-pole insertion of standardized 6A and 16A plugs in accordance with NF C 61-314 requirements
• Critical dimensional tolerances (in millimeters): R2.4±0.1, R9.7±0.2, 15.9±0.1, 20.6±0.1, 25.4±0.2
• Material construction: Heat-treated steel or equivalent high-performance material for dimensional stability
• Grip surface roughness specification: 0.6 μm to 0.8 μm
• Includes one retaining pin hole (Trou pour les broches de maintien) for secure fixture mounting during testing procedures
• Dimensional adaptability to test samples, consistent with the requirements of NF C 61-314 Figure C.2
• Manufactured with high precision machining to maintain dimensional stability and ensure repeatable test results

Test Procedures

• Inspect the gauge for any physical damage, corrosion, or dimensional deviations, and verify that its surface roughness and critical dimensions comply with NF C 61-314 Figure C.1 specifications.
• Prepare the 6A or 16A plug test sample, ensuring it is free from cracks, deformation, or loose components that may compromise test accuracy.
• Secure the gauge on a stable testing fixture using the retaining pin hole to maintain a fixed position throughout the testing procedure.
• Align the plug’s pins with the gauge’s reference openings, attempting to insert only one pin (simulating single-pole insertion) without applying excessive force or altering the test configuration.