R.Measures wrote:
> On Oct 20, 2005, at 6:52 AM, Tony King wrote:
>
>
>>I wonder if we could clarify this question?
>>
>>Solder in protection grounding circuits is a no no because the thermal
>>heating of a lightning strike will likely cause the joint to open and
>>that's why the recommendation for exothermic welds (especially to
>>ground rods) but soldering was always approved for current carrying
>>circuits since it makes for a superior electrical connection. I
>>subscribe to the twisting, soldering and then applying the wire nut
>>method with the addition of a few turns of Scotch 33 to keep that nut
>>from turning. Solder is always better than a simple twisted wire
>>connection so that is why I wondered if it really is a violation (not
>>allowed) or just "not required". Is there a specific code section that
>>prohibits soldering in current carrying wires?
>
>
> I have seen Pb-Sn solder erode in the presence of moisture.
Well, I have too, but if you have that kind of moisture in your wiring,
you have more serious problems than a little voltage drop for your
amplifier! You'd better turn it ALL off and fix the water problem!
>
>>Thanks and 73, Tony W4ZT
>>
>>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. exothermic welding is, but truely,
>>>a good marrying of the wires and a wire nut is a very good
>>>connection. DON'T solder them, if anything goes wrong, it is a
>>>violation.
>>
>>
>>
>
> Richard L. Measures, AG6K, 805.386.3734. www.somis.org
>
73, Tony W4ZT
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