General > General Technical Chat
Another dangerous Amazon product
Monkeh:
--- Quote from: tooki on November 13, 2023, 06:20:29 pm ---People should look at the Swiss plug system. It’s compact, safe, and has some really neat features (like three-phase outlets that accept single-phase plugs without needing any adapters or anything.)
--- End quote ---
Or the very similar looking (lacking the three-phase bits, though) IEC 60906-1.
bd139:
--- Quote from: mansaxel on November 13, 2023, 06:46:54 pm ---
--- Quote from: bd139 on November 13, 2023, 06:40:28 pm ---
How is a human supposed to comprehend such "standards"?
We have: plug, socket. Plug always works with socket :-DD
--- End quote ---
You also drive on the wrong side of the road :-D
60309 is comprehensive, though. Both plugs and sockets. But don't go forcing a 216-4h plug (often yellow) into a 216-6h (probably blue) outlet, so it is more "Plug will work with socket under some circumstances".
--- End quote ---
I'm not going to argue over the wrong side of the road thing. I prefer driving on the right!
As for the plug compatibility thing :palm:
AVGresponding:
--- Quote from: mansaxel on November 13, 2023, 06:46:54 pm ---
--- Quote from: bd139 on November 13, 2023, 06:40:28 pm ---
How is a human supposed to comprehend such "standards"?
We have: plug, socket. Plug always works with socket :-DD
--- End quote ---
You also drive on the wrong side of the road :-D
60309 is comprehensive, though. Both plugs and sockets. But don't go forcing a 216-4h plug (often yellow) into a 216-6h (probably blue) outlet, so it is more "Plug will work with socket under some circumstances".
--- End quote ---
I can confirm that this does happen on construction sites. Makes you thankful for proper circuit protection, and also the end of the working day
wraper:
--- Quote from: PapierzToaletowy on November 13, 2023, 10:21:09 pm ---But this is not DC |O
AC mains has no concept of polarity, you have three wires and between each pair (120°) there's 230VAC RMS.
--- End quote ---
It is not DC but there is polarity. Line and neutral cannot be connected in opposite ways unlike with European CEE 7/7 plugs you mentioned (with exception when combined with French and apparently Polish type E outlets).
TimFox:
Also, careful use of three-phase mains keeps track of "rotation", the lag/lead between the three live phases.
Otherwise, a three-phase motor will turn in the opposite direction.
https://www.fluke.com/en-us/learn/blog/motors-drives-pumps-compressors/dont-run-it-backwards to sell Fluke rotation meters
https://www.walterswholesale.com/hubbell-wiring-hbl2723-4-wire-3-pole-polarized-connector-body-250-volt-ac-3-phase-30-amp-nema-l15-30r-black-white-twist-lock-insulgrip to sell NEMA twist-lock polarized connectors
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