ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades Little hole on British plugs

Have been interested to read your postings re. above on ECN.

I believe that the hole was provided to enable visual inspection of the earth wire/terminal without removing the cover of the plug.

Many amateurs wired plugs with all 3 wires cut to the same length. this resulted in a real risk of the earth wire pulling out of the terminal.

The small hole enabled the user to verify that that the earth was still attached.

Please feel free to post this on the forum. I can not post as am not a member.