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Could A Fire Have Caused The Loss Of MH370? | 25 Amp Circuit Breaker

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When we moved from the UK about 15 years ago, we lived in a PME TN-S property and my ex neighbors house is still connected thus. Newbuild and current standard might be to try to retrospectively phase that out, but its still a generalization to say all properties will be TN-C connected. If your in a TN-S property, its my understanding that ignoring that layout and putting your own earthing system in and bonding it to the supply one, can result in ground current back flowing through your system from neighboring properties.

They make silicone pad heaters for automotive stuff like someone else mentioned, that would probably work too.

8 or 12 is usually less than level 2 installations. As I mention they are cool running and very safe. I dare anyone to find a 2012 Tesla MC charging at 40 amperes to say it is ‘cool running’. If it was very hot at the authorized Tesla Service Center, that is all I need to know.

Heat damage from increased resistance is pernicious. P = I^2 * R. At 24 amps, a resistance of a mere tenth of an ohm is 57 watts – almost twice as much as a pencil soldering iron! That’s why it’s important to get those crimps done right and inspect them frequently for signs of degradation. I will readily concede that I am not equal to a manufacturer in terms of consistency and reliability of crimps, even with a ratcheting tool. The only way I can make up for that is keeping an eye on things to catch early degenerative changes before things get out of hand. Part and parcel of building high powered electrical equipment by hand is being ever vigilant when using it.

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Then again, like other counterfeit assemblies…. they might rely on the installer using a 25A relay for a 15A load which is why they put a counterfeit 16A triac inside which the manufacturer actually put a die of a 12A because he knows his user will de-rate the max current anyway.

Just make sure everything is safe and properly grounded any time you’re using electrical equipment and everything should be great. No more reaching behind the Christmas tree to unplug the lights at bedtime!

1. Metal-oxide varistors (MOVs) are available in a variety of form factors and sizes for a broad range of applications. The radial leaded disc type is the most common version.

First off, I would set the system up more like a safety-critical system. I would have an independent, segregated processor running the heated bed. I would have checks in the system processor and re-checks built into an independent circuit built from discrete analog/digital circuits on the system. I would use two, independent temperature sensors on the board, plus at least one thermal fuse, as well as one overload protection mechanism (most likely a fuse).

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The few I bought on AliExpress all had 50% rated triacs in them vs. description. “Luckily” I contested them all for 50% my money back and could use them for lower power projects later

Agreed. I don’t see us revisiting the war of the currents. Interties between independent grids make sense, but there’s a reason that AC won, and I don’t think time and advancing technology has significantly changed that.

Farewell, then, Toyota Auris, welcome back Toyota Corolla. Goodbye countless marketing millions spent establishing a new name and fresh reputation, hello old friend. Out with the old and in with the older, although it is surely not just me pondering why the passing 13 years have replaced recollections of the dull but worthy family hatch with a nostalgic fondness, lightly sizzled by memories of victorious Castrol-sponsored world rally cars?

I suppose the other point of note is that compared to 220/230/240 Euro voltages, residential 240 is not 240 to ground. The only things that have such high voltages to ground are either corner-grounded 240 deltas (which are exceedingly rare) and 480/277Y systems (which admittedly I do a lot of work with). I also really like how in the US we have such an extensive system of completely non-interchangeable, unique connectors for all the different voltage and phase combinations that one might find (thanks, Harvey Hubbell!)


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