[Amps] AC wiring

[Tony King - W4ZT]

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 at aol.com wrote:
>>
>>> In a message dated 10/20/2005 8:23:04 A.M. Eastern Standard Time,  
>>>francis.carcia at 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