During tests using these gauges, the shutters shall be held open. The metallic components of Gauges A, B, and C shall be manufactured from hard, corrosion-resistant metal (e.g., stainless steel). An electrical indicator with a voltage ranging from 40 V to 50 V (inclusive) shall be used to detect contact.
Gauge A shall be inserted through the entry holes of the socket-contact assembly in all possible positions until Plane XX is fully in contact with the engagement face. The indicator shall not illuminate.
For Gauges B and C:
- Fully insert their pins into the socket-contact assembly.
- Verify the indicator status as follows:
- For Gauge B: The indicator shall illuminate.
- For Gauge C: The indicator shall not illuminate.
Standard:
IEC 60906-1 “IEC system of plugs and socket-outlets for household and similar purposes – Part 1: Plugs and socket-outlets 16 A 250 V a.c.” Figure 2

IEC 60906-1 Figure 2 Gauge for Outlets 16A 250V A.C.
Tags:GNGPL-90602