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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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Rooftop access and power
Hi, I've got a project on that may require me accessing rooftops in the
local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Thanks |
#2
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Rooftop access and power
elyob wrote:
Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Thanks is that permanent, or termporary, power? |
#3
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Rooftop access and power
"The Natural Philosopher" wrote in message ... elyob wrote: Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Thanks is that permanent, or termporary, power? Permanent. |
#4
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Rooftop access and power
elyob wrote:
"The Natural Philosopher" wrote in message ... elyob wrote: Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Thanks is that permanent, or termporary, power? Permanent. Ah. Waterproof outlets on a RCBO equipped ring, or, if lights, decent quality. Cable is an issue too...I can't remember what the specs for outside cabling are, but certainly steel conduit properly earthed and cable glands and silicone where stuff exits from it is a good start. Or armored cable..as usied underground..and lots of vaseline on any screw connectors, and prevent then getting full of water. Trick is not to seal things unless you can seal *completely*..better do have a roof and a drain over anything that may get rained on.. |
#5
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Rooftop access and power
elyob wrote:
Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). I'd hope the vertigo can be controlled in such a manner that it doesn't distract you from the safety aspects of electrical wiring. They may be some professionals that can guide you in conquering the heights issue - though your minute spent overcoming it is a good sign, well done! ;-) A local college would be able to give advice on becoming an electrician, or google search this newsgroup. The question comes up quite often - maybe we need a trades training section in the FAQ (http://www.diyfaq.co.uk) -- Adrian C |
#6
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Rooftop access and power
"Adrian C" wrote in message ... elyob wrote: Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). I'd hope the vertigo can be controlled in such a manner that it doesn't distract you from the safety aspects of electrical wiring. They may be some professionals that can guide you in conquering the heights issue - though your minute spent overcoming it is a good sign, well done! ;-) A local college would be able to give advice on becoming an electrician, or google search this newsgroup. The question comes up quite often - maybe we need a trades training section in the FAQ (http://www.diyfaq.co.uk) I just gave my local college a call, and it'd be 3 years of 4 hours a week. So quite a lot for "running a wire to the roof"! I know that there is now a legal requirement for wiring. However, if I just wanted to run an extension cable from my flat to the roof, what sort of requirements would I be looking at? As mentioned on other answer, this is to be a permanent (or semi-permanent) fixture. Obviously dealing with electricity and the elements, I know I need to be very careful, hence the request!. I only need 12-14 volts outside (basically to run a small computer), should I step this down before sending it outside? Thanks |
#7
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Rooftop access and power
"elyob" wrote in message ... "Adrian C" wrote in message ... elyob wrote: Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). I'd hope the vertigo can be controlled in such a manner that it doesn't distract you from the safety aspects of electrical wiring. They may be some professionals that can guide you in conquering the heights issue - though your minute spent overcoming it is a good sign, well done! ;-) A local college would be able to give advice on becoming an electrician, or google search this newsgroup. The question comes up quite often - maybe we need a trades training section in the FAQ (http://www.diyfaq.co.uk) I just gave my local college a call, and it'd be 3 years of 4 hours a week. So quite a lot for "running a wire to the roof"! I know that there is now a legal requirement for wiring. However, if I just wanted to run an extension cable from my flat to the roof, what sort of requirements would I be looking at? As mentioned on other answer, this is to be a permanent (or semi-permanent) fixture. Obviously dealing with electricity and the elements, I know I need to be very careful, hence the request!. I only need 12-14 volts outside (basically to run a small computer), should I step this down before sending it outside? Thanks Computers run on 240 volts in the UK Laptops have their own transformer from 240 down to 15 volts according the spec on mine If it is a laptop that you are running you may be able to make up a lead to leave the transformer indoors and run the 15 volts outside. It rather depends on distance and therefore voltage drop in the cable. I am not aware of any regs or safety issues with 12 volt supply outdoors after all that's what boats cars and caravans use. However I am not sure how you would waterproof the computer Tony |
#8
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Rooftop access and power
I only need 12-14 volts outside (basically to run a small computer),
should I step this down before sending it outside? No. 12V is extra low voltage and pretty safe. Your main problem is that a long run at 12V is very inefficient and could have excessive voltage drop. You may find it is not practical and have to run the cable at a higher voltage (i.e. 230V) and have the power adapter at the point of use. Christian. |
#9
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Rooftop access and power
"Christian McArdle" wrote in message ... I only need 12-14 volts outside (basically to run a small computer), should I step this down before sending it outside? No. 12V is extra low voltage and pretty safe. Your main problem is that a long run at 12V is very inefficient and could have excessive voltage drop. You may find it is not practical and have to run the cable at a higher voltage (i.e. 230V) and have the power adapter at the point of use. Would 10 metres be considered a long run of cable? |
#10
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Rooftop access and power
No. 12V is extra low voltage and pretty safe. Your main problem is that
a long run at 12V is very inefficient and could have excessive voltage drop. You may find it is not practical and have to run the cable at a higher voltage (i.e. 230V) and have the power adapter at the point of use. Would 10 metres be considered a long run of cable? Assumptions: Laptop power supply is 60W. Laptop voltage is 12V. Length of cable is 10m. Twin and earth mains cable is used. Using the tlc-direct volt drop calculator, it suggests 6mm cable for this. This will provide a voltage drop of 0.4V. 6mm cable is very hefty. Presumably, then, assuming volt drop is inversely proportional to cross sectional area, you would get a table approximately like. 1.0 - 2.4V 1.5 - 1.6V 2.5 - 1.0V 4.0 - 0.6V 6.0 - 0.4V I don't have the resistance figures on me to check this table properly, but it looks about right. Remember, this is based on a 60W supply, which is a typical small one. A more powerful laptop (especially a desktop replacement) could need substantially more. Also, I don't know what your laptop will cope with in terms of input voltage. Christian. |
#11
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Rooftop access and power
On Tue, 6 Jun 2006 14:12:57 +0100 someone who may be "elyob"
wrote this:- However, if I just wanted to run an extension cable from my flat to the roof, what sort of requirements would I be looking at? The requirements you will learn about in 3 years of 4 hours a week. There are no short-cuts and wiring outside the protection of a building is one of the most demanding applications there is. I suggest that if you don't want to learn you team up with someone who has learnt. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#12
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Rooftop access and power
"David Hansen" wrote in message ... On Tue, 6 Jun 2006 14:12:57 +0100 someone who may be "elyob" wrote this:- However, if I just wanted to run an extension cable from my flat to the roof, what sort of requirements would I be looking at? The requirements you will learn about in 3 years of 4 hours a week. There are no short-cuts and wiring outside the protection of a building is one of the most demanding applications there is. I suggest that if you don't want to learn you team up with someone who has learnt. I'd like to be able to get a rough cost estimate at least at this point. See if it is even worth persuing it. At this point it's harder work than first imagined, I may have to just have to live with running a long amount of antenna cable but would ideally prefer to get around this. |
#13
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Rooftop access and power
elyob wrote:
Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). I just gave my local college a call, and it'd be 3 years of 4 hours a week. So quite a lot for "running a wire to the roof"! I know that there is now a legal requirement for wiring. However, if I just wanted to run an extension cable from my flat to the roof, what sort of requirements would I be looking at? I dont usually want to be offputting, but someone who knows nothing about electricity doing outdoor mains wiring on peoples roofs, locations where even the slightest of shocks can prove fatal, is something I would have to question the wisdom of. And a person with vertigo who knows nothing about electrics or the various legal isues involved doing this sounds truly stupid. What do your insurers think of you doing potentially fatal work without even basic subject knowledge or awareness of the various legal requirements involved? I hope you've done some more thinking since posting this. As mentioned on other answer, this is to be a permanent (or semi-permanent) fixture. Obviously dealing with electricity and the elements, I know I need to be very careful, hence the request!. I only need 12-14 volts outside (basically to run a small computer), should I step this down before sending it outside? I see you waited until post 6 to tell us the basic facts. You should not be professionally running mains electricity outdoors anywhere, and could end up in front of a judge if you do. I realise you might take offence at this, but I'd much rather you got offended and had a good think about it than went ahead and found yourself 3 years later standing in front of the judge, explaining why your illegally installed work took someones life. And before you ask, if you're not familiar with the various regs it almost certainly would be illegal. Yes you can run 12v 10 metres, but you need to bear in mind you will need much heavier cable than you would use for mains. I'm not sure how constructive it would be to go into voltage drops, design margins and so on, so just pick something like 2.5mm^2 and you should be ok. I dont know if youre trolling or withholding more key information from us, but try not to kill anyone. NT |
#14
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Rooftop access and power
wrote in message oups.com... elyob wrote: I dont usually want to be offputting, but someone who knows nothing about electricity doing outdoor mains wiring on peoples roofs, locations where even the slightest of shocks can prove fatal, is something I would have to question the wisdom of. Hence the reason I'm asking here before I even attempt it, or not. I think the wisdom is in asking first is it not? And a person with vertigo who knows nothing about electrics or the various legal isues involved doing this sounds truly stupid. What do your insurers think of you doing potentially fatal work without even basic subject knowledge or awareness of the various legal requirements involved? I hope you've done some more thinking since posting this. I'm asking what sort of training is required and what sort of equipment is needed before I even attempt it. So at the moment, legally I'm in the clear. I've not done anything yet. I see you waited until post 6 to tell us the basic facts. I think the basic facts are, how do I get up on the roof, not fall off and install electricity point. Okay, I wasn't clear on the electricity being permanent, but the basic facts were there. You should not be professionally running mains electricity outdoors anywhere, and could end up in front of a judge if you do. I realise you might take offence at this, but I'd much rather you got offended and had a good think about it than went ahead and found yourself 3 years later standing in front of the judge, explaining why your illegally installed work took someones life. And before you ask, if you're not familiar with the various regs it almost certainly would be illegal. Yes you can run 12v 10 metres, but you need to bear in mind you will need much heavier cable than you would use for mains. I'm not sure how constructive it would be to go into voltage drops, design margins and so on, so just pick something like 2.5mm^2 and you should be ok. I dont know if youre trolling or withholding more key information from us, but try not to kill anyone. It's not a troll, it's a serious enquiry from someone who doesn't know the regs and thought he'd just ask here. An alternate is to keep all the machinery indoors and run just an antenna cable up the wall. However the loss of signal doing this is enormous, and I'd prefer to get the equipment outdoors and the antenna with as little cable run as possible. And, no offence taken asthere is important information in what you've written, and (as you say), serious consequences if things go wrong. |
#15
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Rooftop access and power
On Tue, 6 Jun 2006 17:42:41 +0100 someone who may be "elyob"
wrote this:- I think the basic facts are, how do I get up on the roof, That depends on the building. On some it is a matter of opening a door or hatch. On others it is a matter of opening a window. On some it is a matter of using the appropriate ladders. On some it is a matter of using the appropriate scaffolding. In recent years the HSE have taken up working at height with a vengeance. not fall off That depends on the building. Is the roof flat and suitable for walking on? Does it have edge protection? Are roof ladders and/or crawling boards necessary? and install electricity point. Your plan would also involve installing waterproof data cabling, installing the computer and installing the cover for the computer. Obviously you need to be able to get all this on the roof, along with any tools you need. The equipment must be fixed to the roof so that it is not likely to fall off and hit someone. An alternate is to keep all the machinery indoors Far more sensible. and run just an antenna cable up the wall. However the loss of signal doing this is enormous, Have you investigated the various high gain versions? and I'd prefer to get the equipment outdoors Remember that you will also need to maintain it outdoors. and the antenna with as little cable run as possible. At the expense of a lot of equipment that is going to be difficult to maintain even if it does remain on the roof. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#16
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Rooftop access and power
It's not a troll, it's a serious enquiry from someone who doesn't know the
regs and thought he'd just ask here. An alternate is to keep all the machinery indoors and run just an antenna cable up the wall. However the loss of signal doing this is enormous, and I'd prefer to get the equipment outdoors and the antenna with as little cable run as possible. And, no offence taken asthere is important information in what you've written, and (as you say), serious consequences if things go wrong. What exactly are you up to?, some sort of wi-fi networking if that so POE is good for that!... -- Tony Sayer |
#17
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Rooftop access and power
"elyob" wrote in message
... Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Thanks If this is for a very specific purpose (from the other replies, it sounds it), it might be better to explain exactly what you have in mind rather than everyone guessing what you're about. I'm sure that you'll then get much better replies. |
#18
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Rooftop access and power
"Paul Andrews" wrote in message ... "elyob" wrote in message ... Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Thanks If this is for a very specific purpose (from the other replies, it sounds it), it might be better to explain exactly what you have in mind rather than everyone guessing what you're about. I'm sure that you'll then get much better replies. Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. |
#19
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Rooftop access and power
The message
from "elyob" contains these words: Am looking at sticking computers on a few houses around the area for a community WiFi project. I thought the point was it was wireless! -- Skipweasel Pay no attention to that man behind the curtain. |
#20
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Rooftop access and power
On Tue, 6 Jun 2006 16:37:04 +0100 someone who may be "elyob"
wrote this:- Am looking at sticking computers on a few houses around the area for a community WiFi project. Why do you want to stick anything on the roof, especially computers? Why not stick access ports inside the houses concerned? If anything goes on the roof it should only be the antenna. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#21
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Rooftop access and power
On Tue, 6 Jun 2006 16:37:04 +0100, "elyob"
wrote: Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. Why not have a networked wlan gateway on the roof and have the computer indoors? This sort of thing has been done a lot in the US so a Google should get some good ideas. http://www.google.co.uk/search?hl=en&q=community+wlan&btnG=Google+Search&m eta= http://www.google.co.uk/search?hl=en&safe=off&q=community+wifi&btnG=Search &meta= cheers, Pete. |
#22
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Rooftop access and power
Am looking at sticking computers on a few houses around the area for a
community WiFi project. Why do you need computers for this?.. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Works very well, we use industrial grade equipment Alvarion Breeze net and thats fine with POE but the same with anything else!... Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. Still odd why you need the PC n the roof, can you explain it all a bit more, sounds interesting -- Tony Sayer |
#23
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Rooftop access and power
elyob wrote:
Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. This is insane. What you do, is get a WiFi router and run a few meters of cable to a rooftop antenna. Ditto for the actual computers. Or if you are close enough,m an external antenna in a window usually works well. No need to take mains up there, and any aerial rigger will help you get the main aerial rigged. |
#24
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Rooftop access and power
On Tue, 06 Jun 2006 21:11:20 +0100 someone who may be The Natural
Philosopher wrote this:- Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. What you do, is get a WiFi router and run a few meters of cable to a rooftop antenna. The OP would do well to explain the problem properly. How big is the network to be? How many access ports are there to be roughly? How will they communicate with each other? How is the network to be segmented? Is reception required inside, outside or both? From these I think the OP could get some very good advice. As for antennas, a reasonable starting place is http://www.netshop.co.uk/productslis...tegoryID=52497 though many of them are more expensive than the access port they are connected to and the cautions on installation should be noted. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#25
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Rooftop access and power
In article , David Hansen
writes On Tue, 06 Jun 2006 21:11:20 +0100 someone who may be The Natural Philosopher wrote this:- Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. What you do, is get a WiFi router and run a few meters of cable to a rooftop antenna. The OP would do well to explain the problem properly. How big is the network to be? How many access ports are there to be roughly? How will they communicate with each other? How is the network to be segmented? Is reception required inside, outside or both? From these I think the OP could get some very good advice. As for antennas, a reasonable starting place is http://www.netshop.co.uk/productslis...tegoryID=52497 though many of them are more expensive than the access port they are connected to and the cautions on installation should be noted. Best outfit for wireless networking equipment is, http://www.solwise.com/ -- Tony Sayer |
#26
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Rooftop access and power
"elyob" wrote in message ... Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. A USB stick sealed in a piece of plastic pipe (25mm conduit) with a USB cable down to the computer (or a hub) in the roof space is safe and doesn't suffer from any signal loss. You might even be able to install it through a plastic soil pipe vent without going outside (drill a hole and poke the conduit up, seal with a suitable sealant and some tape). What sort of range are you aiming for? |
#27
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Rooftop access and power
"dennis@home" wrote in message . uk... "elyob" wrote in message ... Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. A USB stick sealed in a piece of plastic pipe (25mm conduit) with a USB cable down to the computer (or a hub) in the roof space is safe and doesn't suffer from any signal loss. You might even be able to install it through a plastic soil pipe vent without going outside (drill a hole and poke the conduit up, seal with a suitable sealant and some tape). What sort of range are you aiming for? Much bigger range, and will be using specialist equipment. Will be using big omni antennas and the like. i.e. http://www.solwise.com/wireless-outd...4-omni-8on.htm |
#28
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Rooftop access and power
In article , elyob
writes "dennis@home" wrote in message .uk... "elyob" wrote in message ... Am looking at sticking computers on a few houses around the area for a community WiFi project. I may be able to run power over ethernet, although this has been muted from some involved in similar projects. Basically I will strip the computer down to minimal parts and place in a waterproof cover with an antenna on top. A USB stick sealed in a piece of plastic pipe (25mm conduit) with a USB cable down to the computer (or a hub) in the roof space is safe and doesn't suffer from any signal loss. You might even be able to install it through a plastic soil pipe vent without going outside (drill a hole and poke the conduit up, seal with a suitable sealant and some tape). What sort of range are you aiming for? Much bigger range, and will be using specialist equipment. Will be using big omni antennas and the like. i.e. http://www.solwise.com/wireless-outd...4-omni-8on.htm Can you explain the need to have computers outside on the roof?. This is the bit I cant see the need for unless you have some new way of implementing mesh networks?. I hope that your not trying to use the wireless card "in" a a PC for that sort of reason if you are then your going about this in a real arse about face way......... -- Tony Sayer |
#29
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Rooftop access and power
elyob wrote: Hi, I've got a project on that may require me accessing rooftops in the local area and providing power to these areas. Firstly, I get vertigo. Secondly, I know nothing about electrics. So, my question is, what steps should I go through to learn the correct methods, safety techniques and neccesary electrical skills? Hopefully by employing the correct safety, I will overcome the vertigo (which isn't terible, terrible, unless I feel unsafe. I went up "The Monument" in London the other week, and overcame the vertigo after about a minute). Will you be employing failed car thieves? You might get a lot of sympathy from the police if you do. |
#30
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Rooftop access and power
In article . com,
Weatherlawyer wrote: Will you be employing failed car thieves? You might get a lot of sympathy from the police if you do. Quite. If you come to Gloucester, our police even feed and water fugitives. -- AJL Electronics (G6FGO) Ltd : Satellite and TV aerial systems http://www.classicmicrocars.co.uk : http://www.ajlelectronics.co.uk |
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