Every warning label is a story someone tells somewhere.
#electronics #warningsigns
50 comments
@Dtl reminds me of a conversation I had with a colleague once: @LewisWorkshop @Dtl shocked myself on a network appliance a while back due to this. they had a couple of TO220 packaged diodes bonded to a heatsink, and the tabs were at mains potential. gave me a dead arm for about an hour. @Dtl I was telling a couple of galpals about warning labels a couple of weeks ago & how for every one that exists - someone did something quite stupid. That's why we have labels like: "Remove cap, before drinking." & "Open bag, before consuming." @Dtl I saw this one night driving into work. I like to think thereβs a page in a training document or similar as a direct result of this ladder placement. The line was probably dead (that or the worker might well be), but the placement of that ladder is a real safety third sort of move. (Iβm not even sure itβs secured) @VestigialLung @Dtl Given the location of the repeater box, that's probably a cable TV/internet line rather than a power line (those are typically higher up). Not going to electrocute someone, but has potential to seriously annoy your local telco. And if they keep it up, they might get less lucky with their choice of wire next time. @azonenberg @Dtl not to mention, I guarantee that wire isnβt intended to be load bearing. @VestigialLung @Dtl Yep. Climbing that ladder is quite likely to be harmful or fatal, but due to injuries from a fall rather than the shock hazard. If they're lucky it will break (or wiggle out of the way) before they get high enough to do serious damage. @VestigialLung The strand cables carrying telephone trunk lines & CATV hardlines are at ground potential and are very sturdy. A couple hundred kg in tension on them. I would faaaar prefer using a ladder to climbing the pole with gaffs, especially a rock-hard treated timber pole. Short of a cherry picker that's the safest way to get up there. </ex CATV installer> @azonenberg @Dtl @VestigialLung @Dtl Agreed that the ladder placement is itself a safety hazard, but it looks to me like it only reaches the low voltage stuff (phone, cable TV). @Dtl this is missing a "Do not cover pressure relief breaking point with stickers" sticker on the side of the capacitor. @Dtl The next time I design anything with a large aluminum electrolytic capacitor, I am definitely going to put labels like that on them. @Dtl Avry makes printable round label sheets for Β½in to 3in diameter. Maybe more, that was the result of a cursory search. I have a Silhouette CNC paper cutter, so I could use full-sheet label stock. @Dtl @tjkendon @Dtl That one story often leads to others: "I'm sorry, you want us to print _what_ on a sticker? But why would ...? I mean, fine, here's the price tag and timeline, but ..." @Dtl If the capacitor can't briefly hold and later discharge some leverage, is it really worth having? @Dtl I used to have a coworker who was in a competition with his friends to get warning labels put on things. For example, he would contact shampoo companies and say he ate their grape shampoo and then, bam, warning label not to eat the shampoo. When I see things like this, I wonder how far his pranks have reached. @Dtl That's excellent. If there was anything that shouldn't be used as a handle in a circuit board, i don't think you could choose anything worse than a cap! |
@Dtl From the creators of "pigtails are not handles"...