Not true, one of the main conditions on most planes built is that they have to look cool. If a design will you give you X amounts more lift, but makes the plane look terrible, the "sexy" looking design will win out. The stealth fighter had to be black, even though that is not the most condusive colour for stealth activities. Also, Boeings design for the Joint Strike Fighter (JSF) was ripped on because it wasn't as sexy as Lockheed's. This isn't the only reason Lockheed won out, but it was a contributing factor. And anything that can help land a $200 billion contract does come into play. Especially when the people handing out these contracts don't understand 90 % of the technical differences between the two rockets, but can look at both of them and decide which one looks better.
Without a load attached to the cable (i.e. you grasping a live wire), there is no power. Even if you were holding on to a wire and were grounded, the total power delivered to the load (you) depends on the voltage and the resistance (P=V^2/R). Assuming ~12VDC for most PoE, and typically 500 ohms resistance, you are only looking at 24mA of current and 288mW, and unless that goes directly across your heart (by completing the circuit with your other arm) at best you will feel a little tingle.
The biggest danger comes during lightning storms where huge voltage transients can be induced on these lines due to the large electric fields genereated during a lightning strike. That is why your grandmother always told you never to talk on the phone during a storm.
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Not true, one of the main conditions on most planes built is that they have to look cool. If a design will you give you X amounts more lift, but makes the plane look terrible, the "sexy" looking design will win out. The stealth fighter had to be black, even though that is not the most condusive colour for stealth activities. Also, Boeings design for the Joint Strike Fighter (JSF) was ripped on because it wasn't as sexy as Lockheed's. This isn't the only reason Lockheed won out, but it was a contributing factor. And anything that can help land a $200 billion contract does come into play. Especially when the people handing out these contracts don't understand 90 % of the technical differences between the two rockets, but can look at both of them and decide which one looks better.
Without a load attached to the cable (i.e. you grasping a live wire), there is no power. Even if you were holding on to a wire and were grounded, the total power delivered to the load (you) depends on the voltage and the resistance (P=V^2/R). Assuming ~12VDC for most PoE, and typically 500 ohms resistance, you are only looking at 24mA of current and 288mW, and unless that goes directly across your heart (by completing the circuit with your other arm) at best you will feel a little tingle. The biggest danger comes during lightning storms where huge voltage transients can be induced on these lines due to the large electric fields genereated during a lightning strike. That is why your grandmother always told you never to talk on the phone during a storm.
I thought 2+2=5. I love you Big Brother.