This robot uses AI to find Waldo, thereby ruining Where’s Waldo | 220v Contactor Relay

We frequently come across warm circuit breakers, warm dimmer switches, and even warm electrical panels during our home inspections. So how warm is too warm? It depends. I know, it’s kind of a blowhard answer, but there’s no one-size-fits-all answer.

It’s also worth noting that some of the quibbles, such as wind noise and the slightly fidgety ride, are still being worked on. What appears to be a good car could yet get even better.

MOVs tend to degrade gradually after a large surge or multiple small surges. This degradation leads to increasing MOV leakage current; in turn, this raises the MOV’s temperature, even under normal conditions such as a 120-V ac or 240-V ac operating voltage. A thermal disconnect adjacent to the MOV (Fig. 4) can be used to sense the increase in MOV temperature while it continues to degrade to its end-of-life condition. At this point, the thermal disconnect will open the circuit, removing the degraded MOV from the circuit and thus preventing potential catastrophic failure.

There’s a proper place for a relay and a proper place for a SSR. And I agree this solution should have been a relay.

The number on this photo is a little misleading. 337 mpg! I think I shot it after having the car for about ten minutes, nearly all of it without using the petrol engine. Still, it’s a nice little tease for any friends riding along.

The rest of the circuit would be built on the backside, with judicious use of surface mount electronics rated for miltemp operation (to 125C). Standard connectors from Samtec or Molex can handle the current drive easily, with no problems from the heat. Add an acrylic conformal coat on the backside, or perhaps potting the electronics, and you can make the entire module one single brick module.

To take it a step further, I’d take the time to measure the amperage on the circuit. I wrote a blog post dedicated to that topic, titled Using an infrared camera to find an overloaded circuit. Many home inspectors are opposed to doing this type of test, and I say those home inspectors shouldn’t bother scanning an electrical panel. If a home inspector isn’t going to measure amperage, I don’t know how they could report on an overloaded circuit.

While the Sony A33 and A55′s viewfinder display led to a bit of a learning curve for tracking fast action, its buffer-clearing speed is an ongoing issue. The A55 can capture shots with amazing speed, but once its buffer is filled, things slow down dramatically. The A33, for its part, has a smaller buffer, but it takes less time to clear. The most irritating point with the A55 was that it seemed to take forever before it would let me look at what I’d just shot. This is certainly more of an issue for a relatively inexperienced user than a pro sports photographer, but I often found myself wanting to check out what I’d just shot before the next action sequence started so I could note and correct for any problems in my shooting style. If I’d filled the buffer, though, it took upwards of 15-18 seconds before I could even view the first image on the LCD — and a good while longer before the buffer was completely empty and the camera was back to its maximum burst-length capacity. Shoot RAW+JPEG and it takes 32 seconds to clear a maximum of 18 images, while the A33 only captures 7 images and takes 12 seconds to clear. Advantage A33.

Finally, only consider charging units that have been tested and certified for safety by an independent source like Underwriters Laboratory (UL). And if you’re having a charger installed outdoors, make sure it’s rated for that purpose.

The point is it can be done safely and cheaply and is proven to be safe; so we can’t work out why everyone was so dubious.

Neutral is connected to Earth Ground at your electrical panel. Circuit breakers interrupt the LINE only so I’m not sure what you mean by soil resistivity and current flowing in earth ground. 500 micro amps flowing or rather, leaking through Earth ground is usually all that’s allowed by UL in cord-connected products.

This new hybrid powertrain is more of a success than any that has gone before it at Toyota, thereby widening the options for buyers, and its warm performance will make it an interesting choice. However, with similar gains promised on the 1.8-litre drivetrain, and the incumbent money-saving gains it has, it remains to be seen which will be the pick of the range.