Joe,
I assume I'm the Glen.
Have not looked in any TCR's or TCD's yet.
The thawing may be in article 250 but don't know how a proposal would be appropriate.
Did researh the EC&M and the IAEI NEWS.
Their was a comment started in the August 1971 issue, which I can't find that issue now.
The November 1971 issue, on page 170, did have several readers address August issue of the use of welding machines to thaw frozen water lines. They all thought that where this is done, all grounded and grounding conductors must be removed from the dwelling wiring system and also any dwelling near by. One said a fire started in a neighbor's home and ruined some of the NM wiring of the homes .
In the the Oct 1972 issue, on page 106, 4 homes had fires in the Quebec area when using welders to thaw water pipes.
The November 1991 issue, page 64, melted the green wire out of the dishwasher cord and damaged the cord for the garbage disposal.
The April 1992 issue, page 63 to 66, had more than a page and one-half on this subject.
The July/August 1998 issue, pages 59 to 63, of the IAEI NEWS had 5 full pages of thawing a sub-divisions' water system had damaged a home.
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Apparently, the risk of damaging the electrical systems of any nearby service connected loads is enormous, because of the network of metal underground water lines and the common grounding conductor of the utility.
Some damage may not become obvious for months.
Joe, I will try to look in the 250 articles of the TCR's and TCD's later on.
Glenn
