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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Broadband Cable & Mains Power Cable
It is a long time since I last posted on this forum but I have a
dilemma. I need to bury a mains power cable about 25 Metres in length to my workshop at the bottom of my garden. At the same time I need to have a Broadband cable to the same workshop. My question is this, will it have an adverse effect on the Broadband signal if the 2 cables are buried in the same conduit? The mains power cable will cary only the same as the house circuitry requires. Regards, Peter. |
#2
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Broadband Cable & Mains Power Cable
On Mon, 18 Jun 2007 17:43:24 UTC, wrote:
My question is this, will it have an adverse effect on the Broadband signal if the 2 cables are buried in the same conduit? Probably. But the regs specify a 50mm separation, or an insulating separator. Unless the BB cable is insulated to mains voltages. -- The information contained in this post is copyright the poster, and specifically may not be published in, or used by http://www.diybanter.com |
#3
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Broadband Cable & Mains Power Cable
In article ,
Bob Eager wrote: On Mon, 18 Jun 2007 17:43:24 UTC, wrote: My question is this, will it have an adverse effect on the Broadband signal if the 2 cables are buried in the same conduit? Probably. But the regs specify a 50mm separation, or an insulating separator. Unless the BB cable is insulated to mains voltages. If it's CAT5, it certainly looks like it is. -- *Why don't sheep shrink when it rains? Dave Plowman London SW To e-mail, change noise into sound. |
#4
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Broadband Cable & Mains Power Cable
On Mon, 18 Jun 2007 19:06:31 +0100, Dave Plowman (News) wrote:
Probably. But the regs specify a 50mm separation, or an insulating separator. Unless the BB cable is insulated to mains voltages. If it's CAT5, it certainly looks like it is. I don't think so. A quick search found a Belden CAT5e cable with a rating of 48Vrms (RS 331-8663). Personally I'd not run the xDSL signal any further than it absolutely has to. Fit the DSL modem at the NTE and run network cabling to your switch/firewall or WHY. If you want BB in your garden workshop either run a network cable or two (phone as well?) in a separate conduit(*) or use one of the network over mains devices previously mentioned. (*) The mains really ought to (must?) be run is SWA and that can be directly buried in sand in a trench so only a conduiut for the LV stuff is required. -- Cheers Dave. pam is missing e-mail |
#5
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Broadband Cable & Mains Power Cable
In article om,
Dave Liquorice wrote: Probably. But the regs specify a 50mm separation, or an insulating separator. Unless the BB cable is insulated to mains voltages. If it's CAT5, it certainly looks like it is. I don't think so. A quick search found a Belden CAT5e cable with a rating of 48Vrms (RS 331-8663). That probably just relates to the inter conductor insulation. Although that too looks pretty chunky. But I was referring to the outer insulation which would be the requirement if alongside a mains cable. Personally I'd be happy to tape it to SWA. ;-) -- *What was the best thing before sliced bread? * Dave Plowman London SW To e-mail, change noise into sound. |
#6
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Broadband Cable & Mains Power Cable
On Mon, 18 Jun 2007 22:50:00 +0100, Dave Plowman (News) wrote:
I don't think so. A quick search found a Belden CAT5e cable with a rating of 48Vrms (RS 331-8663). That probably just relates to the inter conductor insulation. Although that too looks pretty chunky. I don't know what Cat5 cable you have looked at but the insulation around a conductor on normal mains cable is at least twice, probably nearer 4 times as thick as that around a Cat5 core. Similary the outer jacket of Cat5 is thinner than that on a mains cable. -- Cheers Dave. pam is missing e-mail |
#7
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Broadband Cable & Mains Power Cable
Personally I'd not run the xDSL signal any further than it absolutely has to. Fit the DSL modem at the NTE and run network cabling to your switch/firewall or WHY. Why do you say that? The DSL might have come many kilometres from the exchange in an un-screened bundle with hundreds of other pairs and running close to many sources of electrical noise. Why do you suppose that an extra 25 meters is going to be detrimental? Contrast this with the known distance limitations of 100Mb and Gigabit Ethernet. -- Graham. %Profound_observation% |
#8
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Broadband Cable & Mains Power Cable
On Tue, 19 Jun 2007 00:45:09 +0100, Graham wrote:
Personally I'd not run the xDSL signal any further than it absolutely has to. Fit the DSL modem at the NTE and run network cabling to your switch/firewall or WHY. Why do you say that? Experience. I've had different preformance from my ADSL after simply moving the wires around in the junction box and NTE. We are talking very low levels of RF at the upper end of the DSL range, small changes can make significant differences. The DSL might have come many kilometres from the exchange in an un-screened bundle with hundreds of other pairs and running close to many sources of electrical noise. As a balanced pair with other balanced pairs, mutual interference is quite low. Induced interference is common mode and should be rejected by the modem. if it's any good. The DSL signal is "delicate" and easily interfered with, no point in opening any more windows for interference than absolutly neccessary. Where are there more tiny arcs, switching transients etc In the home or under the street? Proper networking kit is designed to be robust and can be run almost anywhere without much regard to noise sources. -- Cheers Dave. pam is missing e-mail |
#10
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Broadband Cable & Mains Power Cable
"John Rumm" wrote in message ... snip You could also use "home plug" devices to do away with the data wire and route the network over the mains instead. How does those network systems avoid sending the data down the 'ring main' in the street, is their something about elecy meters that prevent such transmitting of data or does it work by encrypting the data like (a correctly set up) wireless system? |
#11
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Broadband Cable & Mains Power Cable
":Jerry:" wrote in message
reenews.net... "John Rumm" wrote in message ... snip You could also use "home plug" devices to do away with the data wire and route the network over the mains instead. How does those network systems avoid sending the data down the 'ring main' in the street, is their something about elecy meters that prevent such transmitting of data or does it work by encrypting the data like (a correctly set up) wireless system? The Homeplug devices I bought use encryption (DES I think) so they should be fairly secure. They were very easy to set-up and are completely transparent when in operation - manufacturers of other networking kit could learn a lesson here. I used the Homeplug gear to replace a Cat5 cable running between a house and a barn, removing any earthing/lightning/mice issues related to the Cat5. |
#12
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Broadband Cable & Mains Power Cable
Simon wrote:
How does those network systems avoid sending the data down the 'ring main' in the street, is their something about elecy meters that prevent such transmitting of data or does it work by encrypting the data like (a correctly set up) wireless system? The Homeplug devices I bought use encryption (DES I think) so they should be fairly secure. They were very easy to set-up and are completely transparent when in operation - manufacturers of other networking kit could learn a lesson here. I used the Homeplug gear to replace a Cat5 cable running between a house and a barn, removing any earthing/lightning/mice issues related to the Cat5. I've been using them here for some time and I found them much better than trying to tear up floors in a listed building. |
#13
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Broadband Cable & Mains Power Cable
LID declared for all the world to hear...
"John Rumm" wrote in message ... snip You could also use "home plug" devices to do away with the data wire and route the network over the mains instead. How does those network systems avoid sending the data down the 'ring main' in the street, is their something about elecy meters that prevent such transmitting of data or does it work by encrypting the data like (a correctly set up) wireless system? Phases has something to do with it. Some basic info on www.solwise.co.uk -- Regards Jon |
#14
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Broadband Cable & Mains Power Cable
:Jerry: wrote:
"John Rumm" wrote in message ... snip You could also use "home plug" devices to do away with the data wire and route the network over the mains instead. How does those network systems avoid sending the data down the 'ring main' in the street, is their something about elecy meters that prevent such transmitting of data or does it work by encrypting the data like (a correctly set up) wireless system? They claim to not get out of the property past the meter, but I am not sure if there is any technical reason for this, or if it just comes down to range. They do have encryption, and you can group a number of them into a private network. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#15
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Broadband Cable & Mains Power Cable
My thanks to everyone who has responded.
It appears that laying 2 separate cables that are at least 50mm apart min. is the way to go. I did a Google search on "Homeplugs" and since it appears that 2 plugs are needed the expense is getting prohibitive and the security issues are not very tidy. My thanks again for your assistance, Regards, Peter. |
#16
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Broadband Cable & Mains Power Cable
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#17
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Broadband Cable & Mains Power Cable
On Mon, 18 Jun 2007 22:22:04 +0100, John Rumm
wrote: :Jerry: wrote: "John Rumm" wrote in message ... snip You could also use "home plug" devices to do away with the data wire and route the network over the mains instead. How does those network systems avoid sending the data down the 'ring main' in the street, is their something about elecy meters that prevent such transmitting of data or does it work by encrypting the data like (a correctly set up) wireless system? They claim to not get out of the property past the meter, but I am not sure if there is any technical reason for this, or if it just comes down to range. They do have encryption, and you can group a number of them into a private network. I'd have thought that the current-measuring bit of the meter would have had sufficient inductance to effectively block most of the RF applied to the line downstream of it. If you have a section of SWA there's likely enough capacitance between the conductors and the armour wires to limit the performance at RF. You really have to take an entirely RF-based (capacitance/inductance) assessment of your installation as well as the power-based stuff. -- Frank Erskine Sunderland |
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