Someone calling themselves an electrician whilst wearing boots with spurs and a Stetson that is...
Correct wire needed for wiring a caravan away from house
- Thread starter Bigsteve580
- Start date
Someone calling themselves an electrician whilst wearing boots with spurs and a Stetson that is...
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Last time I was in a caravan (admittedly probably 40+ years ago!), the lighting was by gas. However, I concede that a gas-powered TV might be a bit more challenging, even today
Kind Regards, John
True ... Didn't think of that ... So would 6mm do ?? Or thinner
So what's wrong with an overhead option, based on our underground cable a support every 25 to 30m would be fine, ground clearance of about 5.7 m.
Kept under tension at both ends with suitable preformed wraps on the insulators, stays to stop it falling over and fixed to insulators on each intermediate pole.
Heck we'd build something like that in a couple of days!!
(wood poles are about £150 each)
But, ooops, I bet it's not in BS7671 so can't be done!
Kept under tension at both ends with suitable preformed wraps on the insulators, stays to stop it falling over and fixed to insulators on each intermediate pole.
Heck we'd build something like that in a couple of days!!
(wood poles are about £150 each)
But, ooops, I bet it's not in BS7671 so can't be done!
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I don't doubt that you could - but would you do it 'through a wood'?
Kind Regards, John
I think the implication is that if you find yourself a battery-powered TV, and have gas 'everything else', you could manage without a cable of any size
Kind Regards, John
This could be adapted to run on gas instead of oil.
Absolutely, we have specialist conductors just for that sort of location. Though for the sort of load being discussed a 16mm2 concentric would suffice, that would have a maximum span length of 33m as we do use it as an overhead cable.
Though with the mini-diggers now available a trench is equally valid
12V TV or a 230V one fed by a inverter
110aH leisure battery
120W PV panels to keep battery charged
typical touring caravan equipment, all else is propane powered
You can even power a satellite system this way
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Yeah, as suggested, I would gas power the kettle. Add up everything else you want to power and see what it comes to, then work out your cable size from there.
But 100m is a long way....especially through a wood.
But 100m is a long way....especially through a wood.
Using 12 volt battery fed equipment is a good option. If recharging from solar power is not able to supply enough power then run an ELV cable to the shed to supply a couple of amps to continuously charge the battery.
The volt drop along the cable may be high but the resistance of the cable could be used as the current limiting resistor of the charging system.
The volt drop along the cable may be high but the resistance of the cable could be used as the current limiting resistor of the charging system.
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Solid-State Thermoelectric Generation: Capturing Waste Heat
Solid-state thermoelectric (TE) generation is a heat to electricity conversion technology that requires no moving parts. It is unique because it can be applied to both small- and large-scale waste heat harvesting, and it can produce electrical energy from relatively small temperature gradients at relatively low operating temperatures. In fact, in many settings, thermoelectric generation represents the only means to capture value from a small ΔT temperature gradient. Thermoelectric phenomena arise out of the intercoupled electrical and thermal currents in a material. A two-element thermoelectric generator is depicted in Figure 1. It is constructed by connecting an n-type thermo-element and a p-type thermo-element in electrical series, with both elements in thermal parallel between a heat source and a heat sink. The electrical series connection is made by attaching conductors as shown. Ideally, these series connection elements will be both good thermal conductors and good electrical conductors.
It would seem we can get electric from gas using a catalytic heater without any flame even more here.
However found This ETQ IN1000I 1.6HP 1000 Watt 63cc 2-Stoke Gas Powered Inverter Generator 1000W priced at £124.20 (approximately) so why would anyone want to go to all that trouble to generate power.
Since in the trees you could use the trees for power a bicycle hub dynamo with a rope rapped around the spindle spring at ground end and other end fixed well up tree will spin the hub dynamo each time the tree moves in the wind. There is no need for spinning blades to make a wind charger.
Living in a woodland does present some challenges but I visit Coed Nant Gain a local woodland where the owner has managed to bury both power and water supply to his wood framed building where he lives not a straight line but done it.
Above ground there are always branches falling and one has to get above the trees. There is a 11kV line across his woodland which causes problems as being a SSSI site before the electric board can trim trees they need permission from both the owner and Natural Resources Wales before they can start work.
Lucky in a valley as name suggests so only trees at start and finish need trimming until the valley trees start to reach the 300 foot mark which will happen and I would not like to be the guy climbing the tree and felling is not an option.
So below ground is really the only option through trees. Only other option would be extra low voltage and volt drop would likely be a problem. DC to DC inverters and local battery could get around the volt drop problem but when you look at price of a DC to DC inverter it is rather high Link to battery to battery inverter it can be done but the cost is problem.
The inverter generators have transformed the use of generators as unlike the old style they can run at tick over until the load is applied so both noise and running costs are very much lower.
The solid state
seems the reverse of the solid state fridge but will enough be made to get them cheap enough?
Solid-state thermoelectric (TE) generation is a heat to electricity conversion technology that requires no moving parts. It is unique because it can be applied to both small- and large-scale waste heat harvesting, and it can produce electrical energy from relatively small temperature gradients at relatively low operating temperatures. In fact, in many settings, thermoelectric generation represents the only means to capture value from a small ΔT temperature gradient. Thermoelectric phenomena arise out of the intercoupled electrical and thermal currents in a material. A two-element thermoelectric generator is depicted in Figure 1. It is constructed by connecting an n-type thermo-element and a p-type thermo-element in electrical series, with both elements in thermal parallel between a heat source and a heat sink. The electrical series connection is made by attaching conductors as shown. Ideally, these series connection elements will be both good thermal conductors and good electrical conductors.
It would seem we can get electric from gas using a catalytic heater without any flame even more here.
However found This ETQ IN1000I 1.6HP 1000 Watt 63cc 2-Stoke Gas Powered Inverter Generator 1000W priced at £124.20 (approximately) so why would anyone want to go to all that trouble to generate power.
Since in the trees you could use the trees for power a bicycle hub dynamo with a rope rapped around the spindle spring at ground end and other end fixed well up tree will spin the hub dynamo each time the tree moves in the wind. There is no need for spinning blades to make a wind charger.
Living in a woodland does present some challenges but I visit Coed Nant Gain a local woodland where the owner has managed to bury both power and water supply to his wood framed building where he lives not a straight line but done it.
Above ground there are always branches falling and one has to get above the trees. There is a 11kV line across his woodland which causes problems as being a SSSI site before the electric board can trim trees they need permission from both the owner and Natural Resources Wales before they can start work.
Lucky in a valley as name suggests so only trees at start and finish need trimming until the valley trees start to reach the 300 foot mark which will happen and I would not like to be the guy climbing the tree and felling is not an option.
So below ground is really the only option through trees. Only other option would be extra low voltage and volt drop would likely be a problem. DC to DC inverters and local battery could get around the volt drop problem but when you look at price of a DC to DC inverter it is rather high Link to battery to battery inverter it can be done but the cost is problem.
The inverter generators have transformed the use of generators as unlike the old style they can run at tick over until the load is applied so both noise and running costs are very much lower.
The solid state
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Another example of a dodgy claim:
" One possible use for thermoelectric generators is to provide supplemental or back-up electricity for home owners who use outdoor wood/biofuel furnaces. The diagram below reflects just one of the possible thermoelectric home power stations that could be setup using TEG Power modules. It should be noted that just 500 watts of thermoelectric power added to an outdoor wood/biofuel furnace like the one below can produce 12 kWh of electricity per day, which is enough to reduce the average household electric bill by more than one third. Based on an average household usage of 30.66 kWh per day. "
That only works if you have your woodburner (or whatever) going for 24 hours a day AND you can sell electricity or you are using a discrete 500W of power somewhere.
If, OTOH, it's not burning 24x7, or there is no way to sell your electricity, or your 30.66kWh/day is made up of 20kW worth of showering, cooking and laundry, and the rest lighting & electronics at random intervals over a 12-16 hour period then there's no way you'll be able to reduce your bill by ⅓.
1) That's "gas powered" as in "gasoline" - diesel should be cheaper if you can get the red stuff. (Or Jet-A1
)2) There's probably a jolly good reason why that genny is $193 and the identical power Yamaha is $862.
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Can you get CHP gas boilers for caravans?
Correct me if i'm wrong here but one significant difference I see between DNO and customer systems is volt drop.
DNOs are allowed to supply power to customers at anywhere between 216.2V and 253V
If the DNO sets the output of their transformer near the top of the acceptable range then they have over 30V of volt drop to play with while still delivering an in-spec voltage to customers..
AIUI a supply to a lighting circuit (and most submains will be supplying lighting circuits is only allowed to drop 5% and that includes both drop in the submain(s) and drop in the final circuit. So in practice you probablly don't want to be dropping more than 10V or so in your submains.
So the DNO has effectively three times the volt drop budget that the end user would have.
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