[ErnstStavroBlofeld]

Good Point. I agree

[Cold Heat]

Pipes and metal ducts can pick up a charge, but they are usually grounded via current electrical codes. The reason the power wires are so sensitive to EMP is that they are not solid wire. They are comprised of dozens or even hundreds of individual conductors bundled together. As the field passes through it creates a lot of juice. It's acts like a generator. The power lines are spaces apart as they are to prevent them from creating their own EMP’s from the alternating current they carry normally. They don't have a chance against a strong emp and are the first thing affected along with radio transmissions..

[familyop]

It depends on how high the hypothetical device would be detonated. 300 miles up could be a problem. Although the historically tested nuclear weapons bursts low in the atmosphere wouldn’t affect equipment far to the sides of a burst (heavy atmosphere down low), the atmosphere over the top of us gets thin pretty quick. Simple physical example... Those of you who live on mountain ranges can actually see and feel the difference.