On Oct 20, 2005, at 5:46 AM, Gudguyham@aol.com wrote:
>
> In a message dated 10/20/2005 8:23:04 A.M. Eastern Standard Time,
> francis.carcia@hs.utc.com writes:
>> Does the NEC permit connecting Cu wires with Ag-Sn solder?
>>
> NO.....soldering is not allowed.?
Pb-Sn solder or Ag-Sn solder, or both?? I can see not allowing Pb-Sn
solder since it deteriorates in the presence of moisture. OTOH, Ag-Sn
solder is okay with moisture since it the standard for connecting Cu
water pipes.
. So far, the only electrical problem I have encountered with this
house was with a NEC approved wire nut connecting a light atop a brick
gate post. Had that connection been Ag-Sn soldered instead of
wire-nutted, the failure would not have occurred.
> exothermic welding is, but truely, a good marrying of the wires and a
> wire nut is a very good connection.?
I Ag-Sn solder Cu wires when I want a low-R, moisture-resistant
connection. Time and water has shown me that this is especially
important on antenna and ground-strap joints.
> DON'T solder them, if anything goes wrong, it is a violation.
It is a violation to drive 66mph on a CA freeway, but I do it.
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|