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warren@fourward.com
User Rank
Platinum
Re: Overlooking the fundamentals
warren@fourward.com   7/31/2012 9:45:22 AM
NO RATINGS
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...

notarboca
User Rank
Gold
Re: Overlooking the fundamentals
notarboca   7/31/2012 8:39:57 AM
NO RATINGS
Yes, yes, a little practical engineering knowledge goes a long way!  What a sweet deal--2 operational wine fridges for next to naught cost.

Beth Stackpole
User Rank
Blogger
Overlooking the fundamentals
Beth Stackpole   7/30/2012 8:01:01 AM
NO RATINGS
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.

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