seeking how to couple mains circuits for powerline ethernet (EOPL, IEEE 1901)
by SaintDanBert from LinuxQuestions.org on (#6MEK2)
Q1 Can someone tell me how to couple two circuits of my house mains for use of "powerline ethernet" (EOPL, IEEE 1901)?
Even the EOPL Networking vendors trumpet the statement, "coupling boxes must be on the same mains circuit." The coupling boxes adapt the signals from a network cable, typically UTP drop cables. The content is then modulated onto the mains power lines. The gremlin in this deployment appear when the circuit reaches its breaker panel leg and cannot find the other coupling box because it is attached to a circuit on the other panel leg.
It sounds to me like there is some sort of frequency pass-band filter that could enable the EOPL modulation to move from leg to leg without causing mains electrical troubles. Sadly, I've forgotten any knowledge I ever had about how to actually create something like this. I hope that there is some sort of existing product or known-to-work hack other there.
https://www.electronics-tutorials.ws.../filter_4.html
I vaguely remember solving this problem decades ago in the early days of home automation -- X-10(R) or similar. Another vague memory includes a "clothes dryer" plug and connector with some components that spanned the two power connections. This avoided the need to enter and tinker inside the mains panel.
NOTE: I'm working in the USA so our in-house outlets are 120 VAC to a panel that supplies 240 VAC as two separate "legs". The AC power is 60Hz. Half the breakers connect to one leg and one half to the other leg. The term "circuit" typically refers to the same panel "leg" when speaking about EOPL and similar.
Example Mains Panel Wiring
Thank you in advance,
~~~ 0;-Dan
Even the EOPL Networking vendors trumpet the statement, "coupling boxes must be on the same mains circuit." The coupling boxes adapt the signals from a network cable, typically UTP drop cables. The content is then modulated onto the mains power lines. The gremlin in this deployment appear when the circuit reaches its breaker panel leg and cannot find the other coupling box because it is attached to a circuit on the other panel leg.
It sounds to me like there is some sort of frequency pass-band filter that could enable the EOPL modulation to move from leg to leg without causing mains electrical troubles. Sadly, I've forgotten any knowledge I ever had about how to actually create something like this. I hope that there is some sort of existing product or known-to-work hack other there.
https://www.electronics-tutorials.ws.../filter_4.html
I vaguely remember solving this problem decades ago in the early days of home automation -- X-10(R) or similar. Another vague memory includes a "clothes dryer" plug and connector with some components that spanned the two power connections. This avoided the need to enter and tinker inside the mains panel.
NOTE: I'm working in the USA so our in-house outlets are 120 VAC to a panel that supplies 240 VAC as two separate "legs". The AC power is 60Hz. Half the breakers connect to one leg and one half to the other leg. The term "circuit" typically refers to the same panel "leg" when speaking about EOPL and similar.
Example Mains Panel Wiring
Thank you in advance,
~~~ 0;-Dan