In many ways, fuse ratings is an art form. Inrush current, load current, spikes, motors starting up, and numerous other factors come into play. You have to consider the steady state of the device, but what if all peripheral functions operate at the same time? So rating a fuse can be tricky. I assume the cooler design engineer was looking at the steady state current and not considering inrush from start-up. But then again, running a fuse so close to steady state was foolish, unless he was forced to use wiring or other devices that could not handle much more current. Then. that was just plain stupid, but cost effective. Fused flex on start-up or an increase in current, so they will wear out if they aren't designed properly. But, if there was no warranty, then who cares?
I wish I could find a Ferrari that someone threw away because of blown fuses. I am sure I could find the fix...
Nice catch--both for figuring out the fuse issue and for scoring a working wine fridge. Seems like a pretty basic case of specing the wrong part and overlooking fundamental design principles. You have to wonder if it's a case of oversight or a design choice caused by pressure to reduce costs. Either way, a pretty overavoidable design flaw.
What should be the perception of a product’s real-world performance with regard to the published spec sheet? While it is easy to assume that the product will operate according to spec, what variables should be considered, and is that a designer obligation or a customer responsibility? Or both?
Biomimicry has already found its way into the development of robots and new materials, with researchers studying animals and nature to come up with new innovations. Now thanks to researchers in Boston, biomimicry could even inform the future of electrical networks for next-generation displays.
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