Constellation Performance Centaur II 500 power amplifier | Lrd12 Overload Relay

What about converting down to 12-24v AC for the bed with a ZVC switch going to the controller? It seems that running it off DC is wasteful but mains is relatively risky.

I’m surprised no one mentioned how Mattias Wandel mounted the SSR on a piece of sheet metal (pretending it will be a heat sink), then mounted it on a water _heater_. I know the heater is insulated so it really shouldn’t be radiating any heat, but wouldn’t it have made more sense to mount the SSR on the cold water inlet pipe? You want to heat the water anyway… When I saw his first video showing off the project I said to myself that’s not going to end well. I’m surprised it lasted this long.

Anyone know a good source of information for dummies on electromagnet math? I’d love to build one of those electro magnetic pan brakes, but blindly connecting 240VAC to a coil scares me.

仲鑫达倡导“勤奋、求实、开拓、发展”的企业精神，在企业内部构建积极向上、团结协作、创新进取的企业文化和人才环境。

If you have an older system, you might like to see more of a pool system rebuild. If you are interested in controlling the pool chemistry, we’ve seen that before, too.

My son replaced a C-Max with the regular hybrid version of a Niro recently. I would not use “reliable” and C-Max in the same sentence as it needed a new transmission at 77K miles (fortunately covered under a hybrid warranty), had a leaking engine (not covered under warranty), a Sync system that failed twice (covered under a special warranty extension that was about to expire), and numerous other problems mostly electrical in nature. We’ll see about the long-term reliability of the Kia but fuel economy has been in the high 40s (versus 35 for the C-Max) and all-around the Niro just feels like a much nicer car for less money. Personally I will definitely take a look at the plug-in version when I am next looking for a new car and it would be in the color of the one reviewed here so I hope it doesn’t get discontinued as Kia seems to like to do fairly often.

Engineering types have been known to reduce “Preventive Maintenance” in the large “Mains” switch panels in an attempt to save budget funding. A close friend stepped up to a sadly neglected switch panel, pushed the dis-connect and the panel door blew off in his face. It seems that dust is conductive, and will explode if a large spark is present. The good news, he is alive, and was promoted to avoid a lawsuit. :cheers:

I adore the Gravity Blue finish on this tester — it’s a welcome change from the sea of grey, silver, and white that fills every damned parking lot. More blue/green here again.

There are lots of big name professional meters that share the same ports for both. My Klein shares them.

Overall though, you’re just talking about increased RMS voltage allowing more current; the more current the more burn, heart arrhythmia and neuromuscular effects.

CARLO GAVAZZI is proud to announce the launch of the newest addition to its RGC Series Solid State Contactor platform. These single-phase zero-crossing relays, featuring an integral heat sink, offer the best in the class current rating of up to 37AAC at 40°C or 43AAC at 25°C.

Most systems now do not distribute ground (earth) from the MV / LV substation. At the sub the neutral is connected to ground through a low value resistor (<1 ohm) to a nest of earth spikes. Live and neutral are then distributed. At the house Neutral will be connected to a suitable ground point and at that point the earth connection is split off from the neutral. This means that any difference in ground potential is slowly leaked through the big resistor at the substation and it is a big resistor, looks like an oil tank maybe 2 metres high and 1.5 metres across. It is also normal that if there is any equipment at a pole it will also have an earth nest for the neutral wire.