Wow, what an interesting article. I knew some of that history but none of the excellent details provided. Thanks very much for sharing this article.

Excellent!!!

Thanks Mike. Great article. Interesting and great to have on hand.

Thank you Mike for sharing such an interesting piece of history.

Great article! That was a real learning experiencefor me. Now I can impress others!

Great Article!

This is fascinating reading but there are a number of incorrect. items. The television set existed in 1939 but was not available for sale. It was a novelty at the 1939 New York World Fair in 1939. The screen was 3 inches in diameter and round( Yes, I saw it and thought it was magic). Friction tape absolutely was used as the only tape for splices and was sufficiently resistive for 110 volts (110 was the nominal voltage for household wiring in the 40's and was simply called just that, "110"). For solid non worked annealed copper wire the twisted splice-when properly done-worked well and was safe. The problem was that if untwisted it was work hardened and would have to be discarded because it could not be properly twisted again.

Great article! I always enjoy reading interesting articles about our trade. Thanks

this was a very interesting and also helpful in dating how old house wiring maybe

Very cool link. Tx. Mike.

Trivia Quiz Question: How many know the purpose of the "T" shaped slot in old duplex outlets?

Regards . . .

Jim

P.S.: We learned soldered joints, with both rubber and fricton tape in high school (Lane Tech). P.P.S.: We also learned how to make a U.L. knot in flexible cord.