A path is the key. To be thrown across a room and to be banged up, ie bashing into a wall, must have been a low current high voltage event that made a path!
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。
Gasoline-powered portable generators, which cost from about $400 to $1,500, based on their output and features, are not only readily available at home-improvement stores, they’re easy to use. “If you can operate a lawn mower, you can operate a generator,” says Art Aiello, spokesman for Generac, one of the largest manufacturers of portable generators. “In winter, it doesn’t take a lot of snow or ice to bring down a power line in certain neighborhoods. If you have the ability to pull it out, add fuel and attach extension cords, a portable is a sound solution.”
Comparable relay product datasheets from Omron suggest that without appropriate heatsinking, the current limit should be in the range of 4A to 7A.
MOVs are rated for specific ac-line operating voltages. Exceeding these limits by applying a sustained abnormal overvoltage condition could result in overheating and damage to the MOV.
▲ 系统工程：自动化系统开发设计、调试、低压配柜、变频器控制系统、PLC自动控制系统、各种节能成套系统。
You’ll notice that I didn’t explain exactly how to correct this. I do this intentionally because I’m not going to do the work. This situation could be easily fixed by replacing the dimmer switch with a simple toggle switch, by installing a dimmer rated for a higher wattage, or by installing bulbs with a lower wattage. Any of those would be fine, but as the home inspector, I don’t design the repairs.
It’s good to see a snubber on the design (that’s often omitted on DIY designs I’ve seen). There are a few TRIACs that are designed to commute highly-inductive loads (“snubberless” is the marketing term I’ve seen) — may worth looking into them to reduce the BOM.
Both elements weren’t on….elements in electric HW heaters are cascading…they cannot come on simultaneously. Bottom element is powered through normally closed side of upper element relay. Therefore, if upper element is on, lower element is off.
For this application I would have used a contactor from a reputable supplier that breaks the connection on both legs of the 220V circuit vs a cheap ebay SSR.https://en.wikipedia.org/wiki/Contactor
And for the record, If I’m able to, I will breastfeed my children, because nutritional value, probiotics, and antibodies.
You completely missed the point. The safety regulatory doesn’t change regardless of the *perception* or the *knowledge* of the person using it. If you are selling a product or publishing a design, you may ended up being liable for the end users. Even if you are the person that design and build your own stuff, plugging in something not certified pretty much voids your home insurance if it happens to be the cause of a fire etc. On the other hand if you are playing with ELV from UL etc approved/certified supplies, you are covered.
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