Thanks. Saving for further study.
What most people fail to remember is that most of our electrical power transformers are no longer manufactured in quantity in this country.
Our own domestic production of electrical transformers is woefully inadequate to our needs.
ONLY seven percent (7%) are manufactured domestically :
(source: U.S Dept. of Energy (https://energy.gov/sites/prod/files/2014/04/f15/LPTStudyUpdate-040914.pdf)
Most of our electrical transformers are manufactured in China (the industry exported to China years ago due to lower manufacturing and fabrication expenses).
Even then, most transformers are pre-ordered prior to 'need', and they are already on "back order" lists.
And now, consider which country props up the Norks economically, food supplies, transportation, and fuel (oil and coal).
When Washington talks about imposing a duty tax on all Chinese goods due to a trade debt/imbalance, how do you think China will respond ?
Unfortunately, we are more dependent on China to maintain our electrical supply than we should be.
This is part of the national conundrum regarding North Korea.
William R Forstchen's book :" One Second After ", and the subsequent book, "One Year After" should be in every preppers library for what might/ could occur.