3 ms·
It isn't the voltage that causes interference, it's the current. A flowing current creates a magnetic field which can induce a voltage in nearby wires that run
by mnw21cam 4y ago
It isn't the voltage that causes interference, it's the current. A flowing current creates a magnetic field which can induce a voltage in nearby wires that run parallel. It just happens to be that the wires that carry the highest current are your power lines at high voltage.
If you have a wire carrying a very high voltage but no current at all, you shouldn't get any interference from it. Likewise, you could have a low voltage cable carrying lots of current (though why, I'm not sure), and that would cause interference.
Your point about code and safety is separate, valid, and very sensible though.
- crote 4y agoLow-voltage and high-voltage wires are not separated for interference but for safety. OPs point is that if a 230V wire somehow got damaged it could end up touching the outside of an Ethernet cable, and if the Ethernet cable is not rated for that it could cause serious damage to the attached equipment. You either need to keep Ethernet away from power, or make power 230V+-tolerant.
- ethbr0 4y agoOr just run power over Ethernet, because no safety best practices survives market ease-of-use pressure. /s