I imagine as well (though haven't tested or read definitively about it) that the signal can't go from one leg (one "hot") to the other. A 240V service has 2 legs, 2 hots, with a common neutral which is the center tap from the transformer, so each hot is 120V relative to neutral. A breaker panel usually has alternating groups of two breakers on each leg, e.g. 1 & 2 on the red, 3 & 4 on the black, and so on. I don't think the signal would go from an outlet on breaker 1 or 2 to one on 3 or 4. Similarly, when going from one building to another on the same transformer, you may need to experiment to find outlets on the same leg of the transformer in both buildings.
I too am interested in how this works out.
On 14/02/2012 12:34 PM, Robert Keizer wrote:
My understanding is that a transformer will block that frequency. I had looked into it for a while and I read some people making block wide networks, but the at least in their situation the transformer at the end of the block was filtering.
Keep the list updated, this is interesting stuff. :)
Rob
On Tue, Feb 14, 2012 at 11:48 AM, John Langejohn@johnlange.ca wrote:
From the bit of reading I've done, it appears that a standard for networking over power lines was ratified in September 2010.
Linksys has a device (plek400) for about $100. What I can't seem to find out is what the maximum theoretical distance the signal can travel?
I have a situation where I'd like to get a network drop into a building that is 400m away. I've toyed with the idea of a home-brew Wifi point-to-point system but it's still relatively expensive to buy two Buffalo radios plus external antennas etc. and even then it would be on the outside of the range for that type of solution.
The building is defiantly on the same power "system" so can the network-over-power devices reach 400m ?
John