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Question How can I verify that my building wiring has a low-resistive ground? 

Thanks, Ben
bewalker@graphicproducts.com
Answer

ANSI/ESD S20.20 Table 1 has the required limit for the Equipment Grounding Conductor as < 1.0 ohm impedance. Most users verify this using an ohmmeter.

 

See our Low Resistance Tester which is designed to test the low resistance grounding limits of ANSI/ESD S20.20, ANSI/ESD S6.1 and recommendations of ESD Handbook ESD TR20.20. For its use, see Technical Bulletin TB-3055.

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