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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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Emergency generator question
Now that the power cut season will soon be here again I've been thinking
about getting one of those small petrol driven generators which could be put to good use as well as acting as an emergency electricity supply - basically running the central heating and some lighting. In use, is it simply a matter of connecting an 'extension lead' with trailing bank of sockets to the generator and using this in the house to plug in your essentials? Or is there a way of putting some sort of permanent system in the house which can be connected to the generator? Sorry if this sounds a bit vague..... Thanks Tony |
#2
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Emergency generator question
Tony Hayes wrote:
Now that the power cut season will soon be here again I've been thinking about getting one of those small petrol driven generators which could be put to good use as well as acting as an emergency electricity supply - basically running the central heating and some lighting. In use, is it simply a matter of connecting an 'extension lead' with trailing bank of sockets to the generator and using this in the house to plug in your essentials? Or is there a way of putting some sort of permanent system in the house which can be connected to the generator? Sorry if this sounds a bit vague..... Thanks Tony For domestic use it is simpler to put in a flying lead to power up essentials. There are special changeover switches to swap to generator power and back. My personal favorite though is to have one low draw ring main which is only used for central heating pump, gas boiler, tv / satellite/ video, and a couple of strategic lights, run this circuit off a ups and when the rest of the house goes into darkness you have a few minutes of light to fire up the generator to power the ups. MrCheerful |
#3
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Emergency generator question
On Mon, 01 Sep 2003 18:24:53 GMT, "MrCheerful"
wrote: My personal favorite though is to have one low draw ring main which is only used for central heating pump, gas boiler, tv / satellite/ video, and a couple of strategic lights, run this circuit off a ups and when the rest of the house goes into darkness you have a few minutes of light to fire up the generator to power the ups. Sounds good. Perhaps I'm just being a bit thick here, but I have a question...... Are you saying that the UPS supported mains is permanently configured to run off the protected side of the UPS? I can't see any other way of achieving what you suggest, and if that's the case surely the protected circuit has to be sent around the house, duplicating the regular (non-UPS) mains circuit? PoP |
#4
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Emergency generator question
PoP wrote:
On Mon, 01 Sep 2003 18:24:53 GMT, "MrCheerful" wrote: My personal favorite though is to have one low draw ring main which is only used for central heating pump, gas boiler, tv / satellite/ video, and a couple of strategic lights, run this circuit off a ups and when the rest of the house goes into darkness you have a few minutes of light to fire up the generator to power the ups. Sounds good. Perhaps I'm just being a bit thick here, but I have a question...... Are you saying that the UPS supported mains is permanently configured to run off the protected side of the UPS? I can't see any other way of achieving what you suggest, and if that's the case surely the protected circuit has to be sent around the house, duplicating the regular (non-UPS) mains circuit? PoP Effectively I run the 'essential' ring off the ups and change the ups over to generator supply. MrCheerful |
#5
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Emergency generator question
On Mon, 01 Sep 2003 20:39:27 +0100, PoP wrote:
Are you saying that the UPS supported mains is permanently configured to run off the protected side of the UPS? I can't see any other way of achieving what you suggest, and if that's the case surely the protected circuit has to be sent around the house, duplicating the regular (non-UPS) mains circuit? That is correct and something I'm keeping in the back of my mind as a rewire the various parts of this building. Though the UPS wouldn't feed everything just those things that really don't like having power removed without warning, like PCs. There would be a "maintained" supply that can easyly be fed from the incoming mains or changed over to a generator, this would power things like fridges, freezers, strategic lighting (kitchens, stairs, living rooms) and the input to the UPS. This maintained supply would have non-standard "13A" sockets so the 3kW kettle can't be plugged into a 2kW gene... -- Cheers Dave. pam is missing e-mail |
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Emergency generator question
On Mon, 01 Sep 2003 22:12:49 +0100 (BST), "Dave Liquorice"
wrote: That is correct and something I'm keeping in the back of my mind as a rewire the various parts of this building. Though the UPS wouldn't feed everything just those things that really don't like having power removed without warning, like PCs. This use of a UPS raises a query in my mind. Isn't there a set of regulations covering computer room supplies? Maybe that just applies to computers on the circuit though. One thing to be very wary of in respect of cabling the suggested solution, someone might decide to do some wiring work and start by switching off at the consumer unit. By doing so they would assume that all sockets in the house were dead. Could be lethal if they start jabbing screwdrivers into one of these UPS circuits. Andrew |
#7
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Emergency generator question
In article ,
PoP writes: This use of a UPS raises a query in my mind. Isn't there a set of regulations covering computer room supplies? Maybe that just applies to computers on the circuit though. There are rules relating to UPS's and generator sets. Earthing them properly is a rather non-trivial task. You aren't allowed to assume an earth provided by your electricity supplier is still working when the supply fails. -- Andrew Gabriel |
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Emergency generator question
On Tue, 02 Sep 2003 06:41:48 +0100, PoP wrote:
One thing to be very wary of in respect of cabling the suggested solution, someone might decide to do some wiring work and start by switching off at the consumer unit. By doing so they would assume that all sockets in the house were dead. Even if I pull out the main fuse and switch off the breaker I still assume that everything is live until tested with a volt stick and even then I check cautiously on first contact with tools/me. If there are maintained circuits all the CU(s) should be labled with a warning and each maintained outlet/fitting as well. -- Cheers Dave. pam is missing e-mail |
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Emergency generator question
"Tony Hayes" wrote in message ... Now that the power cut season will soon be here again What is the power cut season? Adam |
#10
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Emergency generator question
On Mon, 01 Sep 2003 18:44:18 GMT, "ARWadsworth"
wrote: What is the power cut season? The season when power cuts are dark and annoying, rather than merely annoying. |
#11
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Emergency generator question
"Andy Dingley" wrote in message wrote: What is the power cut season? The season when power cuts are dark and annoying, rather than merely annoying. This is a really good question. Other than getting a generator, what other ways are there that we can get organised now, rather than wait for it to happen. After last years fiasco I'd rather be really well prepared. In my case I was grateful for an open fire with back boiler. Although it only heats one radiator and hot water, I was very glad I had it. I could at least have a bath and go to work refreshed and clean! I've also acquired a toasting fork so can live off beans on toast for a few days. Lighting is the main difficulty without a generator. Anyone got any ingenious ideas to prepare for power cut season? the more Heath Robinson the better! Liz --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.512 / Virus Database: 309 - Release Date: 19/08/2003 |
#12
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Emergency generator question
"Liz" wrote in message ... "Andy Dingley" wrote in message wrote: What is the power cut season? The season when power cuts are dark and annoying, rather than merely annoying. This is a really good question. Other than getting a generator, what other ways are there that we can get organised now, rather than wait for it to happen. After last years fiasco I'd rather be really well prepared. In my case I was grateful for an open fire with back boiler. Although it only heats one radiator and hot water, I was very glad I had it. I could at least have a bath and go to work refreshed and clean! I've also acquired a toasting fork so can live off beans on toast for a few days. Lighting is the main difficulty without a generator. Anyone got any ingenious ideas to prepare for power cut season? the more Heath Robinson the better! We live in an isolated area and suffer power cuts several times a year. About 10 years ago I made a 500W 12V to 230V ac invertor and together with a large 130AH 12V battery which I keep fully charged normally keeps us out of trouble. Using a string of low energy bulbs (11W equiv 60W incandescent) I can illuminate the whole house and still have power left to run the central heating pump (solid fuel boiler) and a radio for over 3 hours which is normally sufficient. Last year was an exception and we were cut off for just over 2 days. Fortunately we always keep the two cars pretty full of petrol in case of emergencies and last year used them to charge up the spare battery and keep the backup system running for heating. Obviously we have the usual camping stoves etc available for cooking so managed to survive without too much inconvenience other than the loss of the freezer contents (which was insured anyway). I believe that you can now buy 150W and 300W converters for under £50 now, ready made and ready to run. This works out much cheaper as a standby than buying a dedicated petrol generator which you may never need if you live in London or other big city. Dave |
#13
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Emergency generator question
On Mon, 1 Sep 2003 20:29:34 +0100, "Liz" wrote:
Anyone got any ingenious ideas to prepare for power cut season? the more Heath Robinson the better! Install an emergency light which comes on if the power fails. These give light for up to 3 hours typically, and if positioned in the hall or landing can give enough light to find your way to the candles or beer supply. Example: http://tinyurl.com/lw7n PoP |
#14
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Emergency generator question
On Mon, 1 Sep 2003 20:29:34 +0100, Liz wrote:
Other than getting a generator, what other ways are there that we can get organised now, rather than wait for it to happen. After last years fiasco I'd rather be really well prepared. Keep a working torch by your bed and possibly other locations around the house. Maybe install a non-maintained(*) emergency light in a key location, top of the stairs and hallway are good. Light can come in through open doors to enable careful movement in the rooms. Have the faults phone number of your local power distribution company handy (may not be the same as the company you buy your power from). Think of means to heat water without electricity, we have a two ring Camping Gaz hob and grill that runs from a large butane cylinder. Heats water fine for drinks/washing, good enough to cook up a reasonable meal on as well. Think of foods that don't require you to open the freezer (opening the door of a freezer shortens it's defrost time considerably). So a stock of dried and/or tinned stuff. This reminds me I need to check that the week or so of winter stock I try to keep in is still useable and there. Neighbours keep 3 weeks food supplies in during the winter, they have experienced real winters up here, we haven't, yet. Lighting is the main difficulty without a generator. This is very true. We have some "cyalume" lights sticks, good enough to move about and eat by (just) but not for cooking by. I've looked around for things with decent output and life. Battery powered stuff has a short life, just a few hours or less if you have reasonable light from it. I think I'll be getting a couple of gas powered lanterns. These chuck out roughly the same as a 60W bulb or more and last a good time (12hrs+) on one easily stored, no shelf life, cannister. Don't forget spare mantels and gas... (*) "Non-maintained" means that it is off until the power fails when it comes on. These normally run for about 3hrs. A "maintained" emergency light is one that is on all the time and will continue to run for about 3hrs after the power is lost. -- Cheers Dave. pam is missing e-mail |
#15
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Emergency generator question
On Mon, 01 Sep 2003 22:33:36 +0100 (BST), "Dave Liquorice"
wrote: (*) "Non-maintained" means that it is off until the power fails when it comes on. These normally run for about 3hrs. A "maintained" emergency light is one that is on all the time and will continue to run for about 3hrs after the power is lost. It depends on what you buy, Dave. I have some maintained ones and they can be switched on and off as for a normal light, but will come on regardless on power failure. This obviously requires two live connections though. You can also buy retrofit kits which will go into a standard fluorescent fitting, replacing the choke and provide HF lighting as well as the emergency functions. ..andy To email, substitute .nospam with .gl |
#16
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Emergency generator question
"Liz" wrote
| Lighting is the main difficulty without a generator. A couple of Emergency Lighting Units eg stairs and kitchen make life easier and safer and will last for several hours. A *very small* microwave can be run off a car battery with an inverter unit, which will also do central heating pump, or run small fluoro lamps far more efficient than torches. My main difficulty is the tv. I have a battery radio and tv (and a box of 20 D batteries I got cheap from government surplus) but tv reception is dependent on the communal aerial amplifier. I am also dependent on electric for cooking. (having neither a car nor a microwave, the inverter idea doesn't work for me) but hopefully the nearby chippies/chinese are gas fired. But power cuts here are rare and short-lived, usually related to aged underground cables and/or digger drivers. Owain |
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Emergency generator question
Owain wrote:
But power cuts here are rare and short-lived, usually related to aged underground cables and/or digger drivers. Not round here they aren't. Usually related o large trees falling across overhad lines. Usually takes a minimum of a coule of hours to clear, if its just isolate/remove/switch on, or up to several days if lines are actually broken in several places. Owain |
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Emergency generator question
On Mon, 1 Sep 2003 22:34:04 +0100, Owain wrote:
A couple of Emergency Lighting Units eg stairs and kitchen make life easier and safer and will last for several hours. 3 normally, power cuts here are either measured in less than a minute or 6hrs+. My main difficulty is the tv. Who *needs* TV, there are such things as books, cards, board games etc. I have a battery radio and tv (and a box of 20 D batteries I got cheap from government surplus) And their "Use by:" date is? I am also dependent on electric for cooking. Thats the one you really need to take care of. Get a small Camping Gaz stove. Think I've seen 2 packs, stove and lantern for about =A320. Take = care with these they do get hot(doh!), have naked flames and can present a fire hazard. but hopefully the nearby chippies/chinese are gas fired. But will they be open if their till doesn't work or have poor lighting. Think of H&S and great vats of hot fat in poor lighting, if an employee had an accident or a customer come to that the chippie would be liable... Things have changed since the dark days of the 4 day week. I can remember going shopping in places in virtual darkness then and of course cashiers could add up and work out chnage without the aid of a machine... -- Cheers Dave. pam is missing e-mail |
#19
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Emergency generator question
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#20
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Emergency generator question
"I've been thinking about getting one of those small petrol driven
generators" [..] don't bother, buy more candles and thermal clothing (c; if you want to use a gen work out what your power requirements are, heating pump, fridge, freezer, lighting, tv or whatever and add some. my 2.2kw gen barely powers a kettle (c; Les |
#21
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Emergency generator question
Tony Hayes wrote:
Now that the power cut season will soon be here again I've been thinking about getting one of those small petrol driven generators which could be put to good use as well as acting as an emergency electricity supply - basically running the central heating and some lighting. In use, is it simply a matter of connecting an 'extension lead' with trailing bank of sockets to the generator and using this in the house to plug in your essentials? Or is there a way of putting some sort of permanent system in the house which can be connected to the generator? Sorry if this sounds a bit vague..... An emergency bodge is to use a nasty 'live plug' wired in backwards to your ring main, and use th consumer unit to select which circuits are activated. DO switch the main circuit breaker off tho. Your generator is not equipped to feed the national grid if power is restored ...or the neighbours lights if it isn't :-) NOTE: This is thoroughly bad practice, probably illegal, and extremely dangerous if you don't understand what I said. However, it may prove useful in an emergency. Thanks Tony |
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Emergency generator question
In article ,
The Natural Philosopher writes: An emergency bodge is to use a nasty 'live plug' wired in backwards to your ring main, and use th consumer unit to select which circuits are activated. DO switch the main circuit breaker off tho. Your generator is not equipped to feed the national grid if power is restored ...or the neighbours lights if it isn't :-) NOTE: This is thoroughly bad practice, probably illegal, and extremely dangerous if you don't understand what I said. However, it may prove useful in an emergency. If you want to go this route, you must have much better interlocks to ensure there's no way you can feed electricity back out of your supply and electrocute someone working on the supply line. This is normally done with a transfer switch. Also, some circuit breakers may not be designed to stay live on the load side when switched off. -- Andrew Gabriel |
#23
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Emergency generator question
On Mon, 1 Sep 2003 19:08:09 +0100, Tony Hayes wrote:
Now that the power cut season will soon be here again I've been thinking about getting one of those small petrol driven generators which could be put to good use as well as acting as an emergency electricity supply - basically running the central heating and some lighting. In use, is it simply a matter of connecting an 'extension lead' with trailing bank of sockets to the generator and using this in the house to plug in your essentials? Or is there a way of putting some sort of permanent system in the house which can be connected to the generator? If you decide to go down that line, wire it in permanently. Somewhere along the line *someone* will decide to try and use a lead with two plug tops back to back to feed into a ring main, and that's lethal. Generators must have their neutral separately earthed, unless the incoming supply is pme, when you are allowed to bond the earth of the generator to the earth terminal at the meter position. Don't neglect to make proper provision for protection against overcurrent and earth leakage faults. Most users of stand by generators don't give a second thought as to whether or not they are using a safe arrangement, in fact I'd go so far as to say that most generators are used in a positively unsafe manner when used as an emergency domestic supply. You will need a two pole break before make changeover switch, so that the generator cannot run in parallel with the main supply. Your local distribution company will advise on the current requirements for using a stand-by generator. |
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Emergency generator question
"Tony Hayes" wrote in message ... Now that the power cut season will soon be here again I've been thinking about getting one of those small petrol driven generators which could be put to good use as well as acting as an emergency electricity supply - basically running the central heating and some lighting. In use, is it simply a matter of connecting an 'extension lead' with trailing bank of sockets to the generator and using this in the house to plug in your essentials? Or is there a way of putting some sort of permanent system in the house which can be connected to the generator? Sorry if this sounds a bit vague..... All I am going to do, is make a cable up with a plug on each end, fitted with a 3 Amp fuse, fasten it to the generator so that it wont get separated. Then switch off the mains at the fuse box and plug the genny into the nearest 13 amp socket. I bought the genny for just this reason, after seeing that the possibility of power cuts may take away our use of the central heating. Its gas powered, but as you know, the pump hast to run and the gas control valve needs power. After this, all the rest is a bonus. We don't have a large freezer, so the contents can be a total loss if power is off for more than a couple of days. OK I'll lose the RCD system, but at least I will be able to run the central heating and a couple of lights, possibly even the TV. The house is PME by the way, so I might have to hook up an earth to my earth rod. All that remains, is to open a curtain to see when the power comes back on again and reverse the connections. Dave |
#25
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Emergency generator question
On Fri, 5 Sep 2003 22:30:43 +0000 (UTC), Dave wrote:
All I am going to do, is make a cable up with a plug on each end, PLEASE, PLEASE don't. One some one *will* leave that plugged into a live socket and catch hold of the now live and lethal pins at the other end. Also take serious note about the lack of N E bonding on a generator and the earthing requirement of the generator. The other thing to bear in mind is that some one is also bound to turn on something that is far to large a load for your generator. What happens then is unpredicatable, it may simply stall, it may stuggle badly with the volts and current going all over the place causeing damage to it or other connected equipment, or it might appear to cope but burst into flame a short while latter. All that remains, is to open a curtain to see when the power comes back on again and reverse the connections. How does that show the power is back on during the day? It wouldn't work up here anyway, nearest street light is 1 1/2 miles away fed off a different 11kV line. -- Cheers Dave. pam is missing e-mail |
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