How to properly bond metal junction box with 6 AWG conductors

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You're familiar with the crimp-on red/yellow/blue ring terminals commonly used in hobby or automotive wiring? That system extends into larger sizes (#6 wires use a blue sleeve) and they also make code-rated lugs for electrical work (that don't have insulating sleeves). They are made in every reasonable size including 6ga. to #10 screw. They don't make double ones, you simply use two. You can try the lumber yard/Lowes, but you'll find it for sure at your local electrical supply house, Grainger, McMaster-Carr etc.

Did I mention your local electrical supply house is a good place to know. Not least, their prices are often a lot better than the local lumber yard/big...

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All Code references are based on the 2005 NEC. The grounding and bonding requirements in this column apply to solidly grounded systems that operate at not more than 600V, including 120/240V, 120/208V, and 277/480V.

What comes to mind when you think of pools, spas, hot tubs, and similar installations? Most people would say fun and relaxation. But the person trying to properly ground and bond these installations is more likely to say confusion and frustration. Why? Because of a phrase known as equipotential bonding, which is a term some installers aren't familiar with.

To help us clear up the confusion, let's recap three basic concepts:

When you ground, you connect something to the earth. Think of this as earthing.

When you bond, you create a conductive path between metallic objects.

Bonding is the method by which you create a low-impedance path for fault current to flow.

The purpose of equipotential bonding is to bring metallic objects...

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Article 680 - Swimming Pool Installations

By Mike Holt, for EC&M Magazine

I. General

Article 680 contains restrictive installation and equipment requirements necessary to prevent severe shock to human bodies around swimming pools, spas, hot tubs and fountains.

680.1 Scope.

The requirements contained in Article 680 apply to the installation of electric wiring and equipment for swimming, wading, therapeutic, and decorative pools, fountains, hot tubs, spas, and hydromassage bathtubs, whether permanently installed or storable.

680.2 Definitions.

Forming Shell. A structural mounting in the wall of a pool or fountain designed to support a wet-niche luminaire.

Hydromassage Bathtub. A permanently installed bathtub equipped with a recirculating piping system, pumps, and associated equipment designed so it can accept, circulate and discharge water after each use....

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