Note that code is based on "optimal" for a given application. It assumes
that all connectors, terminations, relays, loads, and other elements of
the circuit are "per specification". It does not take into account the
contractor who promised a two week job to be completed in 3 days, nor
does it consider the General who wants to save 2% on the project to make
that boat payment.
And lets not forget the end user who daisy chains 3 or 4 power strips
together to get more "holes" to plug things into (fortunately most
'loads' these days are low power/amperage draws).
Most engineering types apply a 10 - 20% safety factor (usually required
by the same code specifications being discussed) to the basic design
factors constraining the project, electrical, mechanical, or what have you.
Human beings will always find a way to (as they say) "F" things up no
matter how well designed... if that wasn't true, where would these
u-tubers get their material?
And, yes, I spent a few years doing engineering "stuff" before retiring.
Happy flying, keep the shiny side up (most of the time).
Mark Wegmet
N952MW (res)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Larry Flesner and John Gotschall wrote...
On 3/14/2022 7:46 AM, Flesner via KRnet wrote:
On 3/13/2022 8:49 PM, John Gotschall via KRnet wrote:
I told my friend about my sharing the "one size larger" opinion here
in kr net, and my friend, the other old guy says " They (engineers)
just don't get it, if you want it to last it has to be beefier than
code (minimum)." then he raised his voice " It's the MINIMUM!".
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"One size larger" would not have much of an impact on a project our
size but how much more would a 747 weigh with the "one size larger"
application? It now carries 3,500 pounds of wire. "One size larger"
I'm sure would add the weight of several passengers. I've worked on
electronic equipment for 55+ years and it very seldom that the
"correct" wire size fails but for overheating and physical damage.
Even "one size larger" will fail under those conditions.
Go with what makes you happy.................
Larry Flesner
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