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Why three prongs?

amasci.com Essays & writing Essays & articles Hardware & electronics Candidate
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Resurfaced independently across 4 calendar years, with breakout response in 2 of them.

submissions
4
submitters
4
observed span
2009–2023
peak thread · 232 comments
581 pts
latest 20+ return · 2019-07-08
249 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Even already knowing the gist of things, I enjoyed the description of the path-dependent incremental evolution here. But, this sentence makes me wonder about something: "Also, the clear-weather sky current can no longer build up a high voltage, if any excess charge immediately leaks into the earth." Have our region- and even continent-wide grounded electrical networks changed the expression of lightning storms, such that non-electrified areas are noticeably different?

gojomo·581-point thread·

The obvious follow up question, then, is: why does Japan use 2-prong outlets even today? Are Japanese people dying from electrical shock at a much higher rate than the rest of the world? Is Japan full of only Perfect Electricians? Or is this not actually the significant problem that this myth (in the etiological sense, not the fictional sense) would lead us to believe? The only 2-prong device I own is a (Japanese-made, of course) rice cooker. You'd think that…

ken·249-point thread·

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
838

reference only — not used in Hall rules or ranking

Total comments
378

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2009-01-22Outlets, Grounding and the story of the third prong.timr50
2012-06-02Why three prongs?First breakout · Best threadxd581146
2019-07-08Why Three Prongs? (1996)Latest 20+ point returnnkurz249232
2023-11-07Why Three Prongs?black630