The easiest way to revolutionize your computer’s audio | Circuit Breaker Parts

Oh, and I have fixed about 15,000 of the old CRT TV’s so while my mistakes can’t ever be called good, they’re not without precedent.

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Current starts derating at about 82C (see page 12). But look at the size and configuration of the heat sink required for a 25A SSR, it is 100mmx100mm with lots of fins (see page 13). That will be with lots of free air, preferably mounted so the fins are vertical or with some forced air flow.

The Sony A33 adopts a newly developed phase-detection autofocus sensor and lens module with 15 points, of which three are cross-type. AF points can be selected automatically or manually, and both predictive control (tracking) and face detection are included, although the cameras can only focus on detected faces if they fall under a phase detection point. Autofocus working range is -1 EV to +18 EV (at ISO 100 equivalent), and there’s no dedicated AF assist lamp, with the A33 relying on low-power bursts of internal flash or an external strobe’s assist lamp for focusing in low light.

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。

I had my poke. Mostly people saying “may” or “could” invalidate your insurance and advising caution. Which is sensible enough. Also mention of laws mandating a professional installing things like new wiring for cookers, and other kitchen / bathroom stuff. Makes sense since there’s water about. This is the UK that I looked up, since that’s where I live. Our electrical standards are pretty high, mandatory ring mains, limits on spurs and wiring length, and even our mains plugs have half a dozen safety features built in (protection against the agony of accidentally stepping on one not included).

The issue with using NEMA 5-15 receptacles is that people will use them stupidly. They will attach extension cords without knowing to properly check them for heat build up at the outlet and along their length. It just encourages bad use, modern EVSEs with heat sensors in the plug won’t work appropriately with an extension cord.

Not really clear but good point. I met an electrician who told me : ‘230VAC is not dangerous, I’m getting shocked a lot, it really hurts when its 400VAC. Oh by the way, I have to get an appointment for my heart !’

But they’d have to be in the same phase for it to work. If they’re in opposing phase, they’ll just push and pull against each other.

In air conditioning, we are given a gift by equipment manufacturers on the equipment data tags: the minimum circuit ampacity (MCA) and MOCP or max fuse/max circuit breaker rating.

Agreed, the component is under rated from the start. If you look at a datasheet from a 25A SSR from a better company you will find something like de-rating curves which really show that as you move from the ideal conditions (20C temp, infinite heatsink) you should only use a smaller load. It is pretty easy to reach a limit of half the max load in normal conditions.

Anyone “hacking” an appliance that can literally burn down your house, voids any safety certifications the appliance was manufactured with. The insurance company would ‘probably’ have the option of simply denying any claims arising from a fire caused by the hacked appliance. This is speculation since I’m not an attorney, but it would be prudent to consult with a knowledgeable agent before undertaking any such projects. My policy specifically excludes “events” as a result of deliberate modification of appliances that the manufacturer of said appliance has not authorized.