Charging Your Tesla Model 3 With Just A Wall Outlet | Lrd12 Overload Relay

I think the issue is more that 8A might be fine for a light but embedding it where another future operator will reasonably assume it is rated at 15A is not fine.

I had a job testing these once, and I can confirm that standard failure mode for overcurrent is some kind of explosion. Usually it was a puff of flame and dust down the leg, but occasionally we’d get a TO220 blown in half

Uh, maybe i should not post using a foreign language a 01:00 AM… Correction: It should be broken –> It COULD be broken

For a TRIAC I bend the middle pin forward 0.1″ – 0.2″, this is often done commercially and you can even buy them pre-bent.

Two inputs for the beefy converter are supplied from outlets not just on separate circuits, but on two circuits whose hot lines are 180 degrees out of phase. That means identifying where there are two plugs, not protected by GFCI outlets or breakers, which are on two separate hot lines of split phase power. To protect the user, [Nick] designed in a set of relays which kill the circuit when one of the two supplies is unplugged. A system that didn’t have these protections would have mains voltage on the prongs of the disconnected plug.

So the 12 / 24 V designs aren’t an illusion of safety, they are safer if you accidentally short yourself to them

– Use isolated differential probes to measure high voltage. – Use current clamps or current transformers to measure current. – Put bleeding resistors in any big capacitor in your circuit. – Don’t change the position of the probes in the power circuit without power everything down. – Don’t work with high voltages alone. – If there’s more people involved in your experiment, block any circuit breaker, button or at least put some signs to prevent people from turning them on while you are messing with the circuit. Paranoids may even ground things while they are playing with the installation to direct the current to the ground in case someone makes a mistake.

Just three months after launching the NEX-3 and NEX-5 single-lens direct-view (SLD) cameras, Sony offers up yet another interchangeable lens alternative to the traditional DSLR, with the Alpha SLT-A33, and its closely-related sibling the SLT-A55. Instead of being mirrorless, the new digital cameras employ a "translucent mirror," more commonly known as a pellicle mirror. This advanced translucent mirror remains fixed in place during operation, allowing most of the light to reach the imaging sensor, while a small percentage is reflected to a dedicated autofocus sensor.

Coastal BC might be viable for them, here in the “temperate” bit of Ontario they’d be good in April and October.

It would require a molded socket attached to an edge with a standard IEC polarized C7 connector. No exposed conductors anywhere. Could embed a green light for powered up and a red one for hot into the socket molding.

Where I do agree that it is under rated, as far as I know, Mathias is an electrical engineer. So he should be able to work with mains, and he should also know better.

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.