General > General Technical Chat
Grumpy rant #783
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magic:
This is fine, until you lose neutral due to cabling failure or some dumbass swaps phase with neutral upstream of the device.

I have personally seen the latter happen on an old three phase installation, with designated neutral but no safety earth. Lots of fun ensued :D


This is why civilized people no longer rely on the alleged "safety" of neutral :P
themadhippy:
 
--- Quote ---some dumbass swaps phase with neutral
--- End quote ---
Not that uncommon event for a few years post 2004 ,even the dno  got confused
tom66:

--- Quote from: themadhippy on October 10, 2023, 11:00:37 am ---
--- Quote ---some dumbass swaps phase with neutral
--- End quote ---
Not that uncommon event for a few years post 2004 ,even the dno  got confused

--- End quote ---

How?  We have PEN for the majority of homes in the UK.  Swapping live and neutral isn't possible as it would immediately blow the fuse at the substation or at the premises, with a direct path from the PEN terminal to earth in the plumbing.  The only mistake that's possible is live and neutral at the installation, which can be eliminated by socket testers, but requires the electrician to actually use them. I found at least one socket here with L/N swapped, easy fix but silly that it even happened!
themadhippy:

--- Quote ---How?  We have PEN for the majority of homes in the UK.
--- End quote ---
Apart from those places that are  TNS or TT.
Connecteur:
I'd like to see a new world standard, but likely it won't happen in my lifetime. 
USB ports are fairly universal, and some variants can deliver up to 240 watts.
Of course a little USB C plug would be ridiculous tor a kettle, but I'd like to see a "big brother" version for higher wattage.
But that's just me.
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