"Prometheus" wrote in message
...
In article , Bazzer Smith
writes

"Bob Eager" wrote in message
...
On Sun, 23 Jul 2006 17:52:06 UTC, "Bazzer Smith" wrote:

Obviously to do his job yes, but once you know how there probably
erally isn't that much to it. Once you have done the job correctly you
are pretty much an 'expert'.

This is very naive. The calculations involved, before you even start,
would not be beyond you. But you have to know what to calculate, and be
aware (just as one example) of things such as thermal derating.

eh?

The current rating of a cable depends on how well it can dissipate heat,
now let's see if you can work out why...

I don't need to know that all I need to know if the circuts I am using can
handle
the current I will be drawing, as that is neglible the answer is.


If you are concerned about the heat I think are missing the most
obvious danger which is the current being drawn.


--
Ian G8ILZ