The buyer’s guide to electric-car charging stations | Lrd12 Overload Relay

This device – and any high-powered device that’s home-built – should be regularly inspected to insure that the wiring is not degrading due to heat caused by increased resistance. That’s why the chassis has a clear lid.

After a long, bitter, loud argument with the plant “electrician” I finally got him to check the distribution board, when we opened up the “big grey box” first thing I saw was all the earths, bundled together with tape and just hanging there. From where I was standing I saw a fuel tanker driver hooking the earth lead to his truck, which came into the same box.

It really sounds like the issue here is only anticipating a steady load and not a cold start (figuratively and literally) when choosing componenets

“If you can power the logic side with some +5V derived from mains, there is no point keeping the optocouplers, right?”

If you’re commenting on my mention of clothes-dryers and stoves that was merely editorial. Plus, my house has one on the stove but I don’t particularly want to pull the stove out and unplug it so you can charge your car.

▲ 仲鑫达自动化设备有限公司专业从事制氢及供氢系统的研发、生产、销售和售后服务，对制氢供氢工程的设计、安装、调试运行和后期保养维修，都具有丰富的实践经验。

From the Auris to this, haven’t Toyota learnt anything. It’s just a slightly bigger and slightlly less DULL than the car it replaces.

Yes you are correct, I was remembering from just people recommending power USB power supplies, but looking at the latest data, it seems that current is always less than 215mA. That chip looks good.

440.32 Single Motor-Compressor — Branch-circuit conductors supplying a single-motor compressor shall have an ampacity not less than 125 percent of either the motor compressor-rated load current or the branch-circuit selection current, whichever is greater.

In my experiences, TRIACs fail shorted more often than explode. We have a failsafe of cutting off a mechanical relay in case it happens. Exploded TRIACs do happen though, in the rare case when the load has high leakage to earth, which we don’t have ground fault detection on our devices at the moment. TRIAC we use is rated for 40AMPS @ 600V though for industrial temperature control applications.

But there are some compromises that come with more fluid visuals. Samsung’s FreeSync mode only supports 1080p resolution for now, and the company notes that it might cause some random weirdness with the TV’s brightness at times. Probably still worth switching on just to see the difference it makes.

not exactly mains but when i was a kid i enjoyed playing with photoflash caps and at one point had one fully charged to about 330V and discovered the negative post to the AA battery was also connected to the cap and put the entire shot up one arm, across my damn heart and out the other arm, my whole body locked up for only about a second (maybe 2) and i think i fell over (like people in taser videos but i was sitting). it sure shook me up and im glad it was only a small cap