Grounding

JLC Field Guide: Grounding

The purpose of grounding is safety: A ground wire generates a short circuit and trips the circuit breaker or fuse when voltage is leaking improperly to the electrical box or to the case of a fixture or appliance.

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Grounding Electrical Boxes

Is using a grounding screw required when working with metal electrical boxes? And what about grounding when using plastic boxes? More

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Foolproof Surge Protection

This surge protection system, developed by a master electrician, protects submersible pumps and electronic appliances in heavy lightning areas. More

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Bringing Two-Wire Circuits Up to Code

Q. What's the quickest and easiest way to bring a two-wire circuit up to code? More

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Plug-In Electrical Testers

Using an inexpensive tester, you can troubleshoot a miswired receptacle without... More

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The Electrical Panel

In this guided tour of a distribution panel, a master electrician tells how to make sure an electrical system is wired safely and correctly grounded. More

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Safe Wiring With GFCIs

This builder’s common sense system for shop-built wall systems dramatically increases efficiency and lowers costs. More

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Grounding Instruction

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Grounding Electrical Boxes

Is using a grounding screw required when working with metal electrical boxes? And what about grounding when using plastic boxes? More

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Pigtails for Switches?

Is there any advantage to wiring switches with pigtails? More

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Q&A: Sizing Electrical Boxes

What are the guidelines for determining box size, and how can you prevent overcrowding? More

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Quick Fix for a Noisy Circulation Fan

Q. My client's metal fireplace is supplied by a makeup air system with a built-in... More

Tags: Electrical, Metal, Ventilation, Acoustics, Fireplaces
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Upgrading to Three-Prong Outlets

Q. In an older house wired with BX cable, can the original two-prong outlets be upgraded to three-prong grounded outlets, provided they're properly bonded to the original metallic boxes? More

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