Why ground junction box?

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Old 09-18-16, 06:08 AM
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Why ground junction box?

Why does the metal junction box need to be grounded itself rather than just connecting the ground wires inside?
I have a junction box set against concrete with no space behind so I can't screw in a ground screw to attach wires to - any options?
 
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Old 09-18-16, 06:25 AM
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Use a grounding clip.

If the box is not grounded it will not trip the breaker if a hot wire contacts it and remain a shock hazard.
 
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