- #1
Option B: Ensuring Ground Communications in Buildings
- Thread starter Liad
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AI Thread Summary
Option B raises concerns about using a building's ground for communication, particularly regarding signal clarity and potential damage from electrical transients. The standard for POTS in the US is -48V, and using the building ground instead of a second conductor could compromise signal quality. While the user expresses a willingness to tolerate some noise as long as communication is possible, the risks associated with this setup, such as increased susceptibility to surges, remain significant. Ultimately, using a proper twisted pair is recommended for reliable communication. The discussion highlights the importance of maintaining clear communication lines in building environments.
- #2
berkeman
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Not sure I understand your question. What kind of phones, and what is the 24V? In the US, the POTS (plain old telephone sets) use -48V for power. And if you are asking if you can use a building ground instead of the 2nd conductor in the twisted pair of phone line, the answer in general would be "not if you want a clear signal". Also, building ground is susceptible to electrical transients (like surges caused by nearby lightning strikes), so the chance of damaging the phones would increase if wired that way.
- #3
Liad
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As for damaging the phones - they wouldn be connected for a long time and I don't really care about them. 
A for noise - as long the line will work and I'll be able to understand what the person in the other end says - I'm ok with it.
The phones are just plain phones, and 24v is enough to get the line open with no noises.
A for noise - as long the line will work and I'll be able to understand what the person in the other end says - I'm ok with it.
The phones are just plain phones, and 24v is enough to get the line open with no noises.
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Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
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