Old single conductor THW as overhead circuit from home to detached garage

Status
Not open for further replies.
Apparently this was an accepted practice perhaps covered by Grandfather clause

Apparently this was an accepted practice perhaps covered by Grandfather clause

I've seen this wiring method used on older 1940-1950 homes in Columbia, SC. Prior to garages being attached to homes they were either built detached or added to existing homes. I have never been a fan of the method. Had an occasion where I watch electrician cut all three conductors and the light in garage was still burning. Found someone had re-feed the garage from under ground with UF, either by luck or knowledge it was 120/240V single phase the overhead feed was still hot and on the same phase as the underground UF. I'm asking as we recently reworked an old damage overhead to underground and insurance company will not pay homeowner until I provide a code reference stating it is no longer applicable, they are considering it an upgrade rather than a repair.

Any insights and or NEC references would be greatly appreciated.

Thank you
Steve
 
short circuit faulted said:
Ask and you will receive, Knock and the door will be opened into you...
Thanks
Click to expand...
Next question is what is conductor size, length of span, did it meet overhead clearance requirements, is the insulation sunlight resistant?

Old overhead feeds from the 1940's were often hard drawn copper and could withstand more weight loading then your typical inside building wire could. Larger overhead conductors you typically see utilities use may very well have a steel messenger within the conductor, their high voltage lines that span longer distances definitely have a steel messenger within them.
 
Status
Not open for further replies.
Top