Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
Having had no power for 24 hours looking at generators, the one below
is probably fairly typical of portable generators:- "Sealey Petrol Generator 800w 2hp 2 Stroke Engine Compact and lightweight unit capable of running small tools and lights etc. makes it ideal for roadside, building sites or leisure use. Powerful and reliable generator fitted with maintenance free brushless alternator. Fitted with 12V battery charging outlet and 230V 3-pin socket. Model No: G950 Motor Power: 2hp Motor Type: 2-Stroke Output: 230V - 50Hz /12V DC Current Rating: 3A /8.1A Cont. Power Rating: 650W Max Power Rating: 800W" Now, a fridge or freezer is only about 200W but I read this:- "http://www.powersaving.co.za/index.php?q=con,50,%20misc" The compressor (fridge) is a highly reactive load because when its running the VA shoots up to more than twice the value of the watts consumed. The relationship between real power (Watts) and apparant power (VA), is defined by the ratio between them called the power factor (which reached a minimum of 42% in this test). Unfortunately this concept is fairly technical. The significance of the much larger value of VA for the average home owner is that if you are selecting an alternative source of power you need to check that it can provide sufficient VA over and above its power rating in Watts or kilo Watts (in this case the maximum values recorded were 145W vs 295VA). this whistled over my head with a big WHOOSH, anyone know if the example generator is likely to be powerful enough? -- Mike |
#2
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On Tue, 21 Jul 2009 10:12:50 +0100, Allthumbs wrote:
Having had no power for 24 hours looking at generators, the one below is probably fairly typical of portable generators:- Have you checked if your freezer contents are covered by house / home-contents insurance? If the power-cut is not your fault then yo may be able to claim, either against your policy or whoever caused your power to go off. Cheaper than buying a genny! |
#3
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
"Allthumbs" wrote in message
... Having had no power for 24 hours looking at generators, the one below is probably fairly typical of portable generators:- "Sealey Petrol Generator 800w 2hp 2 Stroke Engine Compact and lightweight unit capable of running small tools and lights etc. makes it ideal for roadside, building sites or leisure use. Powerful and reliable generator fitted with maintenance free brushless alternator. Fitted with 12V battery charging outlet and 230V 3-pin socket. Model No: G950 Motor Power: 2hp Motor Type: 2-Stroke Output: 230V - 50Hz /12V DC Current Rating: 3A /8.1A Cont. Power Rating: 650W Max Power Rating: 800W" Now, a fridge or freezer is only about 200W but I read this:- "http://www.powersaving.co.za/index.php?q=con,50,%20misc" The compressor (fridge) is a highly reactive load because when its running the VA shoots up to more than twice the value of the watts consumed. The relationship between real power (Watts) and apparant power (VA), is defined by the ratio between them called the power factor (which reached a minimum of 42% in this test). Unfortunately this concept is fairly technical. The significance of the much larger value of VA for the average home owner is that if you are selecting an alternative source of power you need to check that it can provide sufficient VA over and above its power rating in Watts or kilo Watts (in this case the maximum values recorded were 145W vs 295VA). this whistled over my head with a big WHOOSH, anyone know if the example generator is likely to be powerful enough? -- Mike Not answering your question, but I heard on the radio this morning, from someone from EDF, that if your power is off for more than 18 hours, you can claim £50 from them - so that should be £50 towards the generator, which may mean you can afford a better one! Toby... |
#4
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well astools on the allotment etc
On Jul 21, 10:12*am, Allthumbs wrote:
Having had no power for 24 hours looking at generators, the one below is probably fairly typical of portable generators:- "Sealey Petrol Generator 800w 2hp 2 Stroke Engine Compact and lightweight unit capable of running small tools and lights etc. makes it ideal for roadside, building sites or leisure use. Powerful and reliable generator fitted with maintenance free brushless alternator. Fitted with 12V battery charging outlet and 230V 3-pin socket. Model No: G950 Motor Power: 2hp Motor Type: 2-Stroke Output: 230V - 50Hz /12V DC Current Rating: 3A /8.1A Cont. Power Rating: 650W Max Power Rating: 800W" Now, a fridge or freezer is only about 200W but I read this:- "http://www.powersaving.co.za/index.php?q=con,50,%20misc" The compressor (fridge) is a highly reactive load because when its running the VA shoots up to more than twice the value of the watts consumed. *The relationship between real power (Watts) and apparant power (VA), is defined by the ratio between them called the power factor (which reached a minimum of 42% in this test). *Unfortunately this concept is fairly technical. The significance of the much larger value of VA for the average home owner is that if you are selecting an alternative source of power you need to check that it can provide sufficient VA over and above its power rating in Watts or kilo Watts (in this case the maximum values recorded were 145W vs 295VA). this whistled over my head with a big WHOOSH, anyone know if the example generator is likely to be powerful enough? Almost certainly it'll do. To be sure, look at the ratings plate on the ff for the VA rating. NT |
#5
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On Tue, 21 Jul 2009 10:12:50 +0100, Allthumbs wrote:
Having had no power for 24 hours looking at generators, the one below is probably fairly typical of portable generators:- "Sealey Petrol Generator 800w 2hp 2 Stroke Engine Compact and lightweight unit capable of running small tools and lights etc. makes it ideal for roadside, building sites or leisure use. Powerful and reliable generator fitted with maintenance free brushless alternator. Fitted with 12V battery charging outlet and 230V 3-pin socket. Model No: G950 Motor Power: 2hp Motor Type: 2-Stroke Output: 230V - 50Hz /12V DC Current Rating: 3A /8.1A Cont. Power Rating: 650W Max Power Rating: 800W" Now, a fridge or freezer is only about 200W but I read this:- "http://www.powersaving.co.za/index.php?q=con,50,%20misc" The compressor (fridge) is a highly reactive load because when its running the VA shoots up to more than twice the value of the watts consumed. The relationship between real power (Watts) and apparant power (VA), is defined by the ratio between them called the power factor (which reached a minimum of 42% in this test). Unfortunately this concept is fairly technical. The significance of the much larger value of VA for the average home owner is that if you are selecting an alternative source of power you need to check that it can provide sufficient VA over and above its power rating in Watts or kilo Watts (in this case the maximum values recorded were 145W vs 295VA). this whistled over my head with a big WHOOSH, anyone know if the example generator is likely to be powerful enough? The peak load is at start and can be very high - a 1A pot (240W, which is a reasonably sized FF) can blow a 5A fuse - but lasts for ~2 - 3 cycles. On start, the inrush current pulls in a contactor (klixon) that supplies the start winding then drops out leaving the pot on its run winding. ISTR the PF being 'not too bad' - but can't unforget wot it were. -- Peter. The head of a pin will hold more angels if it's been flattened with an angel-grinder. |
#6
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well astools on the allotment etc
On Jul 21, 2:50*pm, PeterC wrote:
On Tue, 21 Jul 2009 10:12:50 +0100, Allthumbs wrote: Having had no power for 24 hours looking at generators, the one below is probably fairly typical of portable generators:- "Sealey Petrol Generator 800w 2hp 2 Stroke Engine Compact and lightweight unit capable of running small tools and lights etc. makes it ideal for roadside, building sites or leisure use. Powerful and reliable generator fitted with maintenance free brushless alternator. Fitted with 12V battery charging outlet and 230V 3-pin socket. Model No: G950 Motor Power: 2hp Motor Type: 2-Stroke Output: 230V - 50Hz /12V DC Current Rating: 3A /8.1A Cont. Power Rating: 650W Max Power Rating: 800W" Now, a fridge or freezer is only about 200W but I read this:- "http://www.powersaving.co.za/index.php?q=con,50,%20misc" The compressor (fridge) is a highly reactive load because when its running the VA shoots up to more than twice the value of the watts consumed. *The relationship between real power (Watts) and apparant power (VA), is defined by the ratio between them called the power factor (which reached a minimum of 42% in this test). *Unfortunately this concept is fairly technical. The significance of the much larger value of VA for the average home owner is that if you are selecting an alternative source of power you need to check that it can provide sufficient VA over and above its power rating in Watts or kilo Watts (in this case the maximum values recorded were 145W vs 295VA). this whistled over my head with a big WHOOSH, anyone know if the example generator is likely to be powerful enough? The peak load is at start and can be very high - a 1A pot (240W, which is a reasonably sized FF) can blow a 5A fuse - but lasts for ~2 - 3 cycles. On start, the inrush current pulls in a contactor (klixon) that supplies the start winding then drops out leaving the pot on its run winding. ISTR the PF being 'not too bad' - but can't unforget wot it were. hopefully the gen will supply it without too much V drop. Plus the compressor gets many attempts to start if not initially succesful. NT |
#7
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
In message , pete
writes On Tue, 21 Jul 2009 10:12:50 +0100, Allthumbs wrote: Having had no power for 24 hours looking at generators, the one below is probably fairly typical of portable generators:- Have you checked if your freezer contents are covered by house / home-contents insurance? If the power-cut is not your fault then yo may be able to claim, either against your policy or whoever caused your power to go off. Cheaper than buying a genny! I presume he lives SE London way There have been some very naughty boys playing in the area it's all dahn -- geoff |
#8
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember Allthumbs saying something like: this whistled over my head with a big WHOOSH, anyone know if the example generator is likely to be powerful enough? Hmmm... probably. The fridge/freezer motor takes a belt of current on startup, but the genset alternator will withstand overload in the very short term, happily, it's long enough to cope with a fridge starting up. What I do when the standby genny is tiny like that, is just switch off the fridge for a few hours and keep the door shut. If I need to keep the temp down, I turn everything else off and let the fridge run for a while. I have a chest freezer, so it can remain powerless for ages. |
#9
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On 21 Jul 2009 10:30:28 GMT, pete wrote:
Have you checked if your freezer contents are covered by house / home-contents insurance? If the power-cut is not your fault then yo may be able to claim, I can do that but prefer to rectify the problem. -- Mike |
#10
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On Tue, 21 Jul 2009 12:18:42 +0100, "Toby"
wrote: Not answering your question, but I heard on the radio this morning, from someone from EDF, that if your power is off for more than 18 hours, you can claim £50 from them - so that should be £50 towards the generator, which may mean you can afford a better one! we should get £100 then :-) -- Mike |
#11
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On Tue, 21 Jul 2009 05:11:51 -0700 (PDT), NT
wrote: Almost certainly it'll do. To be sure, look at the ratings plate on the ff for the VA rating. thanks -- Mike |
#12
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On Tue, 21 Jul 2009 20:55:25 +0100, Grimly Curmudgeon
wrote: What I do when the standby genny is tiny like that, is just switch off the fridge for a few hours and keep the door shut. If I need to keep the temp down, I turn everything else off and let the fridge run for a while. I have a chest freezer, so it can remain powerless for ages. yes, I would just give them a boost every few hours, as i happens EDF managed to switch us on for 3 hours now and again. -- Mike |
#13
Posted to uk.d-i-y
|
|||
|
|||
generator capable of emergency power to small freezer as well as tools on the allotment etc
On Wed, 22 Jul 2009 08:01:16 +0100, Allthumbs wrote:
Not answering your question, but I heard on the radio this morning, from someone from EDF, that if your power is off for more than 18 hours, you can claim £50 from them - so that should be £50 towards the generator, which may mean you can afford a better one! we should get £100 then :-) Didn't you just say you where getting power for 3hrs every now and again? The "pay compensation clock" will be reset back to zero each time the power comes back... It has to be off continusly for so many hours before they pay out. With a large number of customers affected for a long time it's cheaper for them to send engineers round manually switching feeds to keep that compensation clock below the threshold... -- Cheers Dave. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Emergency power system for one perosn: Generator or battery system? | Home Repair | |||
exercising an emergency generator | Home Repair | |||
Correct me if I'm wrong - please. Emergency generator question | UK diy | |||
powering small power tools in the field .. options? | Metalworking | |||
Emergency generator question | UK diy |