“never plug extension cords into extension cords” is probably the most common piece of electrical related advice I’ve ever heard. But if you have, say, 2 x 2m long extension cords, and you plug one into the other, why is that considered a lot more unsafe than just using a single 4 or 5 meter cord?

Does it just boil down to that extra connection creating another opportunity for the prongs to slip out and cause a spark or short circuit? Or is there something else happening there?

For that matter - why aren’t super long extension cords (50 or more meters) considered unsafe? Does that also just come down to a matter of only having 2 connections versus 4 or more on a daisy chained cord?

Followup stupid question: is whatever causes piggybacked extension cords to be considered unsafe actually that dangerous, or is it the sort of thing that gets parroted around and misconstrued/blown out of proportion? On a scale from “smoking 20 packs of cigarettes a day” to “stubbing your toe on a really heavy piece of furniture”, how dangerous would you subjectively rate daisy chaining extension cords, assuming it was only 1 hop (2 extension cords, no more), and was kept under 5 or 10 metres?

I’m sure there’s probably somebody bashing their head against a wall at these questions, but I’m not trying to be ignorant, I’m just curious. Thank you for tolerating my stupid questions

  • @Atherel@lemmy.dbzer0.com
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    32 days ago

    So the higher Ampere doesn’t require thicker cables? Genuinely asking. The higher standards and regulations are absolutely part of why you don’t hear this rule here.

    • @Successful_Try543@feddit.org
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      2 days ago

      Yes, as US uses an voltage of 120 V, the current drawn by a load P is approximately double the current drawn by the same load P in EU with 230 V. Thus, the wires used in Europe only need approximately half the cross section compared to US. However, the insulation of the wires needs to be of higher standard.

    • BentiGorlich
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      02 days ago

      Its higher voltage,but yes It does. However the higher standards take care of that, so you don’t have too weak power cables available