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Why electrical plug prongs have holes: Manufacturing convenience over outlet grip

By PulseAugur Editorial · [2 sources] ·

The holes found on many electrical plug prongs, while once serving to secure the plug in older outlets via a "detent" mechanism, primarily serve manufacturing purposes today. These holes allow workers to position the metal blades during the plastic molding process and act as lockout tags for safety. Although Underwriters Laboratories (UL) revised standards to ensure outlets could hold plugs without these holes, many manufacturers continue to include them for production convenience. AI

RANK_REASON The cluster discusses a common object's design feature and its historical/current purpose, drawing on information from a source article. It does not represent a new release, significant industry event, or research.

Read on Engadget →

AI-generated summary · Google Gemini · from 2 sources. How we write summaries →

Why electrical plug prongs have holes: Manufacturing convenience over outlet grip

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The cluster discusses a common object's design feature and its historical/current purpose, drawing on information from a source article. It does not represent a new release, significant industry ev…
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COVERAGE [2]

  1. Engadget TIER_1 English(EN) · [email protected] (Thomas Godwin) ·

    The reason most electrical plug prongs have holes in them

    If you've ever looked at the end of a plug, you've probably wondered why some have holes, and some don't - and no, it's not actually a big conspiracy theory.

  2. Mastodon — mastodon.social TIER_1 English(EN) · [email protected] ·

    The reason most electrical plug prongs have holes in them If you've ever looked at the end of a plug, you've probably wondered why some have holes, and some don

    The reason most electrical plug prongs have holes in them If you've ever looked at the end of a plug, you've probably wondered why some have holes, and some don't - and no, it's not actually a big conspiracy theory. https://www. engadget.com/2300248/reason-mo st-electrical-plug-p…

    LINKS engadget.com/…/reason-most-electrical-plu…

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