Xiaomi’s Redmi Note 4 has a big 4,100 mAh battery and a tiny price tag | 19mm Momentary Push Button

what really matters is whether or not your insurance company will deny your claim. if you have homebrew stuff like this then you are wasting your money on homeowner’s insurance. and of course if your homeowners insurance is invalid then the bank will get a little upset about their mortgage

The list of absolutely required tools is missing the appliance tester. e.g. something like this http://www.fluke.com/fluke/m2en/Products/category.htm?Category=PAT or https://www.gossenmetrawatt.com/english/ugruppe/testingofelectrappliances.htm

I guess you missed my writing ignorant people doing stupid things People using a metal utensil to clear a jammed toaster isn’t unheard of but still there are no barriers to that. Perhaps there are bread toaster that use an enclosed heating element like many toaster ovens use, but my fairly new UL labeled toaster uses the same style of heating element hat been used for decades. That what you quoted was directed the the DIY individual more likely to come across something like this, not average John or Jane Doe.

No, ebay removed the ability for sellers to leave negative feedback years ago. Fun fact – the majority of an ebay sellers score these days (not the % positive feedback, but the score used for determining search rankings etc) is determined by the % of orders that are received on time and without a ebay ‘case’ (return, etc) being opened.

I’m not claiming this is a new phenomenon (I’ve done some stupid things with electricity myself, before the www was even invented) but we know that the media isn’t always rational about these matters.

And in my own experience, I have seen switch mode power supplies designed for 400 volts DC (280 volt AC), taking clearance for such into consideration throughout the whole design.

It’s the same with larger, more power hungry projects as well. [Nerd Ralph] has been running a mining rig for a few years now, and has learned just how important proper power supply management can be. His strategy involves using interlocks to ensure everything powers up at the same time to avoid feedback problems, running a separate ground wire between all GPU cards and the PSU and running the supplies at 220 for the NA folks.

Everything industrial is 3 phase though; it’s 240V phase/neutral or 415V phase/phase here though. You can certainly get a 3 phase connection to your house and/or shed though – it costs about $1000 to replace the meter plus a bit more for wiring – if you have a problematic power-tool habit like me.

I have to say in this case it’s probably a necessity to get anyone to look at the photos, so humdrum is the subject matter

UL rule of thumb for shock hazard: 1.5mm / 60mils distance between a hazardous live conductor and something touchable for single insulation level protection (double that for double insulation).

GFCI breakers aren’t usually used because they aren’t accessible to normal operators like a outlet mounted one would be.

Google’s Cloud AutoML has been available since January to let users train their own AI tools without any previous coding knowledge. The drag-and-drop tool lets anyone create an image recognition tool, which has a variety of use cases such as categorizing photos of ramen by the shops they came from. You can catch a glimpse of this process in the video above, in which different photos of Waldos are fed into the software.