Sonos will only bring AirPlay 2 to its recent speakers | Lrd12 Overload Relay

But it seems our society is structured so that a lack of morals, and inability to feel empathy (but ability to fake it, when needed), can lead certain ambitious and capable individuals right up to where they can do a lot of harm. There’s so many political decisions, particularly in the UK, where “fuck ’em” must have been the answer to any qualms about the needy. Even to the point of ill people killing themselves, and even a few who’ve starved to death.

Waterjet, who seemingly has no concept of how a basic opto-isolated diac-driven triac circuit works, chimes in with useless blabber about insufficient current ratings of the *optoisolator* — seriously? If you’re going to throw stones at someone, perhaps you could verify that you have somewhat of a clue of what you’re talking about?

In some cases, contractors have stated that certain municipalities are requiring that conductors be sized based on the breaker size instead of the MCA. This is not uncommon, but it is usually a matter of a respectful conversation about the above NEC articles. The “authority having jurisdiction” or AHJ is responsible for interpreting the code, and they can make any standard they see fit. While certain local legislation may supersede the NEC with additional regulations, the NEC is a nationally recognized standard throughout the U.S. It is rare that a building department will ignore entire articles of the NEC when it is brought to their attention in a respectful manner.

Alpha mount. The Sony A33 accepts Alpha-mount lenses from Sony, and is backward-compatible with older Minolta or Konica Minolta A-mount lenses, allowing use of a huge range of both current and historic glass. Compared to single-lens direct view cameras — even Sony’s own NEX series — this will likely make the Sony A33 a much more attractive proposition for existing Alpha or A-mount photographers. While Alpha-mount lenses can be used on NEX cameras through a mount adapter, they lose their in-body SteadyShot capabilities, whereas the Sony A33 retains this capability with the same lenses. (In an earlier version of this review, we also called attention to the inability to autofocus using Alpha-mount lenses on NEX-series bodies, but this looks to be negated by a forthcoming update for the LA-EA1 mount adapter that will enable Alpha-mount AF on NEX bodies. We’ve not yet tested this update, and hence can’t comment on how NEX and SLT-series cameras will compare in this area.) Sony rates the SteadyShot sensor shift mechanism in the Alpha A33 for between 2.5 and four stops of correction.

I’d been “dead” 3 times at that point and thought I knew what it meant to be scared, seeing that tanker about to be filled, surrounded by thousands of litres of petrol, diesel, kerosene and other agents of flaming, painful death was and still is the scariest moment of my life. After that nearly being eaten alive by a feral pig or trapped under a hang glider under water was nothing

1) If not breathing, give CPR. Electrocution has pretty good recovery rates if CPR is started right away.

However there is a snag. In recent years there has been a flood of cheaper instruments arriving on the market, and some of the manufacturers of these devices have been found to put IEC 61010 ratings fraudulently on items which do not in any way meet those standards. We have covered tales of dodgy cheap multimeters and test failures more than once here at Hackaday, unfortunately this is a widespread problem. So please bear this in mind when buying a multimeter or other instrument for use with mains voltages: the cheapest may not be good enough. We have all used £5/$10 bargain meters with our low-voltage analogue or microcontroller work because a flashing LED on a breadboard is hardly hazardous, however for higher voltages those IEC class markings have to come with a believable provenance. Buy the most expensive instrument you can afford from a decent and reputable manufacturer, it’ll keep you safer and you’ll get a top-quality meter that will last you a lifetime.

Tomczyk is a professor of HVACR at Ferris State University, Big Rapids, MI, and the author of Troubleshooting and Servicing Modern Air Conditioning & Refrigeration Systems, published by ESCO Press. To order, call 800-726-9696. Tomczyk can be reached at [email protected] (e-mail).

I hard-wired my Level 2 charger into my main panel in 2012, using some 8-AWG wire from Home Depot and a double 40A breaker, plus some sundry clips, clamps, and screws. That stuff cost about $50 then. But I’m comfortable with doing such work myself. It’s akin to installing a circuit for a range or a dryer. I recently moved the thing to better suit my new EV.

In my experience there are only TRIACs that are in perfect working order or TRIACs that have exploded.

And even today people give the advice of plugging a computer in the wall and grabbing the metal case as you’re working inside it. Bad idea – if the PSU has failed, you may very well have live voltages in the boards.

I don’t approve of that design. It lacks the third relay, which means that if you plug into two circuits on the same phase, you get 0 volts between the two hots, but both are still 120 volts away from ground. That means that the equipment doesn’t work, but it’s not safe to poke at. I prefer to insure that the 240 volt outlet is guaranteed to either be completely dead, or properly powered.