More people watched the Logan Paul vs. KSI fight on Twitch than on YouTube | Circuit Breaker Parts

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.

Yes you can use those high voltage safely, BUT your typical DIY people don’t even bother to read or understand datasheets. These people need the proper training, but aren’t likely to be bother to go beyond the typical monkey see monkey do watching youtube and think they know it all. I have seen enough of bad layouts of the average projects that doesn’t even understand that the creepage space between the primary and secondary side of an optoisolator aren’t meant to be for routing!

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I’m not going to argue with your statement, it just seems funny to me that someone would tens of thousands on an Electric Car but still be using a Gas lawnmower!:)

What about putting a uC in SSRs, so you can ask the think if it’s an original part or not. Propper encryption needs to be implemented of course.

Try it- measure the voltage between the neutral and earth ground pin on a North American outlet. If the voltage is near zero, then you have a bonded ground system. If you see 1V or more, then you either do not have a bonded ground, or you have poor / undersized / or very long wire runs between the breaker box and the point you’re measuring.

Just curious, what size pump do you have? The Sonoff claims 10A per channel, but my 1HP pump needs a 40-50A relay to safely deal with cold-start current. Unless the relays are overspec’d I’d be worried about literally burning out those contacts pretty fast.

TRIACs have very low junction voltage / resistance especially when compared to the load they are driving. When they are overloaded they heat causing the the junction voltage to increase rapidly causing exponentially more power to be dissipated by the TRIAC instead of the load. This whole process seems to take about a nanosecond and ends with a small amount of the plastic casing still attached to the legs.

The Death Star post illustrates why we shouldn’t let economists decide how to run things. That and a million other stories from real life.

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.

I can’t remember the exact numbers, but before the change, UK mains voltage was acceptable between something like 210V and 270V, depending on grid load. EU mains had a similar range. All they did, was tighten up the range. So now it’s nominally 230V, with 240V being within acceptable range. Which is good because the voltage stayed exactly the same. They just trimmed the range at the top end to be within the EU standards.

▲ 同时本公司还专业从事老机组制氢系统的自动化改造维修保养和大修工作，在为国内外众多厂家的服务过程中，积累了极其丰富的安装、调试和运行的经验，为用户提供了系统的管理、运行及商务等各方面优质、及时、周到、热忱的服务。