(Subject changed)

On Tue, 14 Nov 2006 07:53:37 -0600, PicDude wrote:

> Similar situation on my end.  The samples (130A-versions in my case) are =
on =

> hold because I've not fouind a good way to run 130A on the PCB to the =

> terminals of the current sensor.  I also remember not being able to find =
PCB =

> screw terminals that can handle that much current.

This has got me thinking (sorry to hijack the thread!).  It's fairly easy t=
o get hold of MOSFETs that will handle 70A or so, which are in a TO220 case=
.  =

Now to handle that much current in a domestic mains installation you'd have=
 to use cable with a cross-sectional area of about 16mm=B2, whereas a =

TO220's leads are maybe a couple of square millimetres at most.  I realise =
that installed cables have lots of other issues, such as thermal insulation=
, =

voltage drop and so on, but can those little leads really handle scores of =
amps without turning incandescent?

Cheers,


Howard Winter
St.Albans, England



-- =

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