EARTH CONTINUITY TEST (ROUTINE TEST) FOR EN60335

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A.1 Earth continuity test
A current of at least 10 A, derived from a source having a no-load voltage not exceeding 12 V
(a.c. or d.c.), is passed between each of the accessible earthed metal parts and
– for class 0I appliances, and for class I appliances intended to be permanently
connected to fixed wiring, the earthing terminal;
– for other class I appliances,
• the earthing pin or earthing contact of the plug;
• the earthing pin of the appliance inlet.
The voltage drop is measured and the resistance is calculated and shall not exceed
– for appliances having a supply cord, 0,2 Ω, or 0,1 Ω plus the resistance of the supply
cord,
– for other appliances, 0,1 Ω.
NOTE 1 The test is only carried out for the duration necessary to enable the voltage drop to be measured.
NOTE 2 Care is to be taken to ensure that the contact resistance between the tip of the measuring probe and the
metal part under test does not influence the test results.

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