Here’s What You Need To Charge Your Electric Car At Home | Circuit Breaker Parts

Low voltage DC distribution makes sense in some cases. 12V is pretty low, though: copper losses are still high, so the amount of copper required is expensive for house-scale. 48V uses one sixteenth the amount of copper, and still is below the shock hazard limit. 48V rack systems are mature, common and are a great idea.

Can you create, and how safe it would be, isolation transformer with two transformers? so, secondary of first transformer connected to secondary of second (2:11:2) ? In my naive thinking head, it should work. i have few microwave transformers with modified secondary (about 20-30V output from 220V input), and was thinking of using two of them…

Ah, right you are. I’m out of date — I last dealt with UK power in 1981, and have not been back since. Thanks for the update.

As an engineer over 20 years ago I coined the term Beancounter Engineering this kind of stuff where some Idiot MBA sets the specs based on saving a few pennies rather than a Electrical Engineer that understands basic (and complex) science. If you are too damned stupid to understand the basic science behind Global Warming you have no business being an engineer or telling engineers what to do

I can only think of a single instance in the last six months where the HPWC higher charge rate would have made a difference for us, and even then it would have simply made leaving for a long trip slightly more comfortable.

Sega announced on its Twitter account today that the release of its Mega Drive Mini, a miniature version of its classic console, would be delayed until sometime in 2019. The Mega Drive Mini’s release was originally slated to coincide with the console’s 30th anniversary in Japan, but its global availability was unknown. Now, the company has confirmed that the miniature console will be released as the Mega Drive Mini in Japan and Europe and as the Genesis Mini in North America.

We were pretty close to that 40% rule when our controllers started to fail, which is probably why they only started failing after our customers had use the controllers a few times. We were pushing 22 Amps through 40 Amp rated parts. In other words, using a component at half its rating still won’t cover for substandard parts! Our solution was to find a part that was manufactured to spec and also use the component at half its rating and we’ve not had a verified SSR related failure since.

99% of the time you can’t even begin to sue because fakes were often dumped and mixed in throughout the supply lines so it’s nearly impossible to track it back to the factory that made the fake. And even if you could find the original factory, international lawsuit rarely works out.

A good quality EVSE can cost between $300 and around $1,200. If you’re choosing a wall-mounted unit, expect to pay another several hundred dollars for installation, depending on local labor rates and permit costs.

Rather than rest after establishing products in every major sector of the interchangeable lens digital camera market — APS-C SLR, full-frame SLR, and most recently single-lens direct view — Sony is boldly striking out to create yet another category with the launch of its very first translucent mirror cameras. The main goal of the new design: achieving unprecedented autofocus and capture speed from an APS-C sensor, interchangeable-lens, consumer digital camera. Comprising a new SLT series, the Sony Alpha SLT-A33, A55, and A55V are closely related cameras sharing the same basic design, with only a few internal features as major differences.

If the device does not have it owns fuse/breaker and relies on the upstream one, it had better be able to handle the full rated current without catching fire.

For the voltage setting, I thought that wattage equaled volts times amps? Shouldn’t the waste heat be the same regardless of whether it’s drawing ten amps at 120 or five amps at 240? Or is it more complex and nonlinear than that? I’m curious.