Sample interview questions: How do you ensure gas systems are properly grounded?
Sample answer:
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Inspect the Electrical Panel: Check that the electrical panel has a ground rod or ground wire connected to the earth, serving as a direct path for fault current to safely dissipate into the ground. Ensure the grounding system is properly sized for the gas system’s electrical load.
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Install Grounding Electrodes: Drive copper-clad steel ground rods or ground plates into the earth near the gas system. These electrodes provide a low-resistance path for fault current to flow into the earth. The depth and number of electrodes depend on soil conditions and local codes.
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Connect Grounding Electrodes to Gas Piping: Connect the grounding electrodes to the gas piping using copper or galvanized steel grounding wire. Use appropriate connectors and clamps to secure the connection, ensuring good electrical continuity.
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Bond Gas Piping to Electrical System: Connect the gas piping to the electrical system’s grounding electrode using a grounding conductor. This provides a continuous path for fault current to flow from the gas system to the electrical system’s grounding electrode and then to the earth.
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Inspect and Maintain Grounding System: Regularly inspect the grounding system for any damage, corrosion, or loose connections. Tighten any loose connections and replace damaged components. Ensure the grounding system is tested periodically … Read full answer
Source: https://hireabo.com/job/12_0_12/Gasfitter