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>> I am the opposite of a handy person, and I had no idea how to deal with this myself. But I Googled. And sure enough, there are multiple YouTubers operating i
by readingnews 4y ago
>> I am the opposite of a handy person, and I had no idea how to deal with this myself. But I Googled. And sure enough, there are multiple YouTubers operating in the home appliance repair space with sufficient specificity and dummy-friendliness that I was able to fix it.
As an Engineer, I have had to explain this to countless people... a mechanic is not a mechanical engineer. An electrician, is not an electrical engineer, and so on and so on.
His other anecdote of lecturer is a straw man also, as no one has done that for centuries. The idea of structured education (college) is to force you to learn ideas you would not normally learn, and have a guide to help you understand (the professor), and have those ideas organized in a pattern that aids the greater idea (e.g. taking maths: calculus, differential equations and linear algebra are not only necessary for much of engineering, but they help you to think in ways of solving problems that engineers come across often). This is one of the key problems with self-teaching, they end up not having the vast maths background to tackle complex mathematical problems, and then end up simplifying and making mistakes. In engineering, these mistakes can be deadly. In software, these mistakes can now be deadly).
- WalterBright 4y agoThe difference between a mechanic and a mechanical engineer is the latter knows the math behind it. The same for electrician and electrical engineer. I asked the electrician wiring my house to not put the phone wires through the same holes as the A/C wires. He asked why. I said because induction will put a 60 cycle hum in the phone wires. He had no idea what that was. I fired him and did the phone wires myself. When I had a house generator installed (long story) the electrician wanted to run the 12V battery charge line through the same conduit as the A/C. I said wouldn't inductive coupling put 120V on the battery charger? He had no idea what I was talking about. I was unable to explain it to him, and just worked with him to change the design. Electricians know the code, the rules, can figure out the right wire size from a chart, and how to do things without getting electrocuted. Step outside of that, and they have no idea.
- hgsgm 4y ago
- coryrc 4y agoI think it'd be a YT engineer who thinks inductively-coupled 120V AC into an extremely low-impedance circuit over a few tens of feet would cause a problem, not an actual EE.
- svnt 4y agoSimilarly with 60Hz hum on phone lines in any recent decade. If the phone doesn’t have a filter, which it probably does, you can notch the hum for $20. OP is verysmart. The contractors didn’t know because it doesn’t impact anyone anymore.
- WalterBright 4y agoI've heard of enough house phones with a hum. At the time I read everything I could find on low voltage wiring, and they recommended what I did. My phone lines are quiet. I also used cat5e for the phone lines and ethernet, and have no trouble with the 100Mb wires and gig equipment. (Cat6 wasn't available at the time.) (The electrician tried to run cat3 or some other cheap garbage wire. He also tried to run RG59 coax, which I ripped out and replaced with RG6 quad shielded wire.) > recent decade This was in 1999. The wiring has survived several upgrades in digital equipment and bandwidth without change. > which it probably does Then it evidently is a problem, as otherwise the filter wouldn't be necessary. Besides, my phone was built in the 1950s. P.S. I'm not an EE. I'm an ME.
- tdeck 4y ago> As an Engineer, I have had to explain this to countless people Sounds like you're a tech person! I have a problem with my printer, do you think you could help?