All of the wire in the high current path is 10 gauge wire that was cut from SOOW cable, so it is, indeed, rated for 600V. In addition, it has 105 degree insulation, which means that it’s actually good for more than 30A. But it’s largely moot since the NEMA 5-15 plugs would only ever be found on 20A circuits (and even then, they likely wouldn’t be dedicated).
I learned British version of English, but my accent is all over the place. I also speak a bit of Spanish, Portuguese, Latin and a tiny bit of German. I can swear in Russian too, because my wife knows that language. And don’t forget my native tongue, which is Polish.
The Sony A33 adopts a newly developed phase-detection autofocus sensor and lens module with 15 points, of which three are cross-type. AF points can be selected automatically or manually, and both predictive control (tracking) and face detection are included, although the cameras can only focus on detected faces if they fall under a phase detection point. Autofocus working range is -1 EV to +18 EV (at ISO 100 equivalent), and there’s no dedicated AF assist lamp, with the A33 relying on low-power bursts of internal flash or an external strobe’s assist lamp for focusing in low light.
My situation is a good example. I just purchased a new house and unfortunately it does not have a garage. Until I get the garage built in the Spring with a NEMA 14-50 outlet, I’m going to rough it with L1 at 120V/15A.
Converting mains voltage down to 12 or 24VDC to drive a heating element makes no sense. To get 120 watts at 12 volts requires thick wires that can handle 10 amps, whereas at 120V, tiny 1A wires will do. If you’ve ever felt the MOSFET that switches your heated bed on and off, you know it’s working hard to pass that much current. [Makertum] is of the opinion this is a dumb idea. He’s creating a 110 / 230 V, mains-powered heated bed.
The theory side of PCB creepage clearnesses is useless because it assumes that there is one constant voltage that the circuit will run at when in reality it’s an over voltage event that usually causes failure, but here are the basics anyway.
But my toaster uses heating elements contacted to 120 VAC, and so no barriers against ignorant ding stupid things. I agree the lower voltage is use because of the illusion of safet is probably why they use the lower voltages. Only an illusion to those who haven had the opportunity to study electricity or had made the effort to study it.
Michael Ashbaugh writes technical analysis for MarketWatch and is editor of MarketWatch’s "The Technical Indicator" newsletter.
If the car achieved its minimum 44 mpg and used 3.1 gallons, that means 136 miles were done on gasoline and 117 were EV miles.
Tilt / swivel LCD. At the rear, the 3-inch LCD dominates much of the available real-estate, and its tilt/swivel mechanism — appearing for the first time in an Alpha camera — can be clearly seen. The display tilts down 180 degrees and then swivels 270 degrees, allowing it to face any direction except to the front right (handgrip) quadrant. The design not only allows easy framing of high- and low-angle shots, but also allows subjects in front of the lens to see themselves — but only when somebody’s available to hold the camera. Since the display tilts downwards, it will be blocked from view when mounted on a tripod, and can’t be extended beyond the 90-degree position with the camera placed on a flat surface, so the only way to use it for self-portraits is to hold the camera at arm’s length. It can also be difficult to deploy and use with the camera mounted on a tripod.
A path is the key. To be thrown across a room and to be banged up, ie bashing into a wall, must have been a low current high voltage event that made a path!
If you run a separate earth wire that is hard grounded at the sub and hard grounded at your house and nowhere in between. In this situation if you get a lightning strike at or near your house then the ground potential rises. This flows through the earth wire to the sub ground and can be a massive current, enough to make the network fail dramatically. This rise in ground potential can also be caused by other things such as a faulty insulator on an MV or HV tower (pylon) or pole. Even if insulators are good then you can still get this ground potential rise. You can easily measure it with a length of wire and two earth spikes, put one near a tower and the other a distance away and you can see a significant voltage. If you also have a separate wire called neutral running form the sub then the potential between that wire and the earth wire is unknown so you have a risk of lethal voltage between neutral and earth, a situation that is not expected and potentially extremely dangerous.
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