I probably ought to be dead, or have some scars at least, but apparently I’m a very resistant person.
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.
The control circuit for the 12V/24V can be as simple as a MOSFET and don’t even need to be isolated if you know what you are doing. Because you are using a regulated supply, the same heated bed can be used at different countries with different voltages. The safety regulatory stuff get you covered as 12/24V are considered to be low voltage.
The dimmer switch for the kitchen lights was rated for up to 600 watts, but the wattage at the lights was more than this; there were ten 65-watt bulbs on this circuit. This caused the front of the switch to get extremely hot, and creates a potential fire hazard. Have this corrected.
That’s how you may get some serious, even life-threatening, internal RF burns without noticing anything.
Older light fixtures won’t necessarily work with energy-efficient CFL and LED bulbs. If you want to stay away from incandescent light bulbs, you might need to replace the whole fixture.
NEC article 440 was added because air conditioning and refrigeration systems are different from typical loads, like lights and heaters. Air conditioner compressor and fan motors are largely inductive (magnetic) loads and have different characteristics than purely resistive circuits. Article 440 has specific guidelines for HVAC and refrigeration equipment manufacturers to follow when writing the equipment data tags as well as for electricians when sizing conductors.
I wrote a whole blog post dedicated to this topic, titled Hot Dimmer Switches. Check out that post for more info on this topic. If I were to write up a problem with an overloaded dimmer switch, my report comment would say something like this:
公司自成立以来始终坚持以纯电子商务模式运营、缩减中间环节、为客户在第一时间提供优质的产品及满意的服务、为您的生产以及采购工作提供‘安全 快捷 方便’公司拥有完善的物流供应系统、现已与众多国外知名品牌生产厂商建立了良好的合作关系。
厦门仲鑫达自动化设备有限公司是一家长年专业从事全球知名品牌ABB DSQC机器人系统模块备件及西门子摩尔(Siemens Moore APACS)控制系统零部件销售企业、我们售出的备品备件均提供一年的质量保证、并且都经过了严格的测试和认证。
When I was a kid I built a Tesla coil using a 12kV neon sign transformer which my mom got for me (this was the 1960s, before Americans turned into wimps). At some point I had the transformer sitting on my workbench and plugged in, with nothing connected to the output. The corona discharge made a hissing sound, but I had music on and couldn’t hear it. Perhaps eight inches away was my table radio, which had a metal chassis. I reached between the two to get something, and my arm shortened the air path enough for an arc to form. I had a couple of nifty burn marks (entry and exit) for a few weeks.
The media aren’t rational about anything. Not something you can really do much about, especially by being reasonable. Try not to think about it too much, is probably the best way to cope.
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