R. Measures wrote:
>
> On Jan 6, 2006, at 3:44 PM, John Popelish wrote:
>
>> R. Measures wrote:
>>
>>>
>>> On Jan 6, 2006, at 9:10 AM, John Popelish wrote:
>>
>> (snip)
>>
>>>> A lose connection at either end would be the most common cause of a
>>>> high resistance neutral.
>>>
>>>
>>>
>>> What if the cause of loosening the connection screw on the Neutral wire
>>> also loosened a screw on the Ground?
>>
>> (snip)
>>
>> The most common cause (I think) of lose connections is thermal cycles
>> caused by load cycles. I see these often enough in industrial
>> settings to be on the look out for them. Sometimes with a thermal
>> imager. Ground connections see no such thermal cycles.
>
>
> In a 240v circuit, Neutral carries zero current and Ground carries zero
> current. How could the thermal cycles differ?
Oh, you are talking about unnecessary neutrals. Okay, you win. ;-)
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