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Isn't it far to say that your quibbling over a point a newbie proberbly knows nothing Re; 240v 230v it's always been 240 to and it will stay that way for some time to come.
"In all the examples above the UK mains voltage (nominally 230V) is assumed to be about 240V. "
Perhaps you might say Habitation area 240 Volts ac (note now nominally 230V but often still referred to as 240V)
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Denn wir haben nichts in die Welt gebracht; darum offenbar ist, wir werden auch nichts hinausbringen.
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Why can't it just be called mains electric, because quite honestly it doesn't matter wether it is 220 or 230 or 240 or 250 cos you could plug ANY of these voltages in and it would have no visible effect to users, UNLESS there were meters etc in line or used to test.
and it cannot be because it is easier to type 230 because by the time everyone has done there is no less than an essay.
Sorry but I just had to say that.
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Les
Why can't it just be called mains electric, because quite honestly it doesn't matter wether it is 220 or 230 or 240 or 250 cos you could plug ANY of these voltages in and it would have no visible effect to users, UNLESS there were meters etc in line or used to test.
and it cannot be because it is easier to type 230 because by the time everyone has done there is no less than an essay.
Sorry but I just had to say that.
Thats a very sensible suggestion for this FAQ SaddleTramp.
(I think I have to qualify it in my FAQ otherwise people might do the sums and be confused by the answers.)
______________________________________________________________ Regards Frank - - please follow me on twitter @FrankieBryant
Denn wir haben nichts in die Welt gebracht; darum offenbar ist, wir werden auch nichts hinausbringen.
RIP Peter and Fiona Our thoughts are with you Chris and Graham. Fighting with Mavis and Ray
Plusnet, Safari 5, G5 PowerPC iMac running OSX 10.5.8, Salisbury UK : Get behind early - it gives you more time to catch up.
What about my 110 volt circuits with all the gubbins that go with it, auto change over, transformers and such like,
Are you going to leave me out
Loddy
Yes
but no but
I think RV electrics need an FAQ Loddy Olley anyone?
______________________________________________________________ Regards Frank - - please follow me on twitter @FrankieBryant
Denn wir haben nichts in die Welt gebracht; darum offenbar ist, wir werden auch nichts hinausbringen.
RIP Peter and Fiona Our thoughts are with you Chris and Graham. Fighting with Mavis and Ray
Plusnet, Safari 5, G5 PowerPC iMac running OSX 10.5.8, Salisbury UK : Get behind early - it gives you more time to catch up.
With Swift vans if you switch to cab battery on the control panel the cab battery charges so you can charge either but not both from an EHU.
I suspect that the same will be true of many others (though not I think explorer group vans)
[quote="karlb"]
safariboy wrote:
can anyone confirm if this works with the lunar roadstar?
My understanding of the system in my Lunar Champ is that on mains (230v) hookup the unit charges the Utility (leisure) battery up to a certain point; and then 'parallels' the two batteries, then charging them both.
Likewise, when the engine runs the alternator it charges the primary battery; once it reaches a level, it parallels the two batteries and charges them both.
I've fitted a second leisure battery parallel to the fitted Utility (leisure) battery, with an isolator on both conductors so that it can be 'separated', but also disconnected without the tails staying live from the original battery.
The Statutory Document relating to electrical installations in caravans and motor caravans is The Wiring Regulations (17th Edition): BS7671:2008 and the relevant part is; Section 721.
It applies to both Low Voltage (230) and Extra Low Voltage (12) systems and is not particularly 'easy-reading' if you're not familiar with the standard terms used, and references to other Sections of the document!
Regarding the 230/240v thing:
The Nominal (stated) supply voltage from the supply company is now 230v to 'standardise' us with Europe.
In practice the supplied voltage in most of the UK is 240v, as nothing has actually changed: this falls within the stated tolerance of the supply.
Most properties around Manchester, where I work are fed with typically 247v according to my (regularly calibrated) meter; again, still within tolerance.
'Mains' supply voltage should always be referred to as 230v since this is the 'supplied' voltage in theory.
Any calculations for sizing of condictors / circuit protection are always based on 230v.
Ste. P.
EDIT:
Sorry, to clarify in the interest of having my facts right (which seems very much the order of the day here!):
BS7671 is non-statutory.
It may however be used in a court of law in evidence to claim compliance with a statutory requirement.
It should be noted that BS7671 is referred to in the Electricity Safety, Quality and Continuity Regulations 2002, as being an acceptable standard which will satisfy statutory provisions.
Additionally the H&S Exec. considers compliance with BS7671 is likely to achieve conformity with the relevant parts of the Electricity at Work Regulations 1989.
With Swift vans if you switch to cab battery on the control panel the cab battery charges so you can charge either but not both from an EHU.
I suspect that the same will be true of many others (though not I think explorer group vans)
karlb wrote:
safariboy wrote:
can anyone confirm if this works with the lunar roadstar?
My understanding of the system in my Lunar Champ is that on mains (230v) hookup the unit charges the Utility (leisure) battery up to a certain point; and then 'parallels' the two batteries, then charging them both.
Likewise, when the engine runs the alternator it charges the primary battery; once it reaches a level, it parallels the two batteries and charges them both.
I've fitted a second leisure battery parallel to the fitted Utility (leisure) battery, with an isolator on both conductors so that it can be 'separated', but also disconnected without the tails staying live from the original battery.
The Statutory Document relating to electrical installations in caravans and motor caravans is The Wiring Regulations (17th Edition): BS7671:2008 and the relevant part is; Section 721.
It applies to both Low Voltage (230) and Extra Low Voltage (12) systems and is not particularly 'easy-reading' if you're not familiar with the standard terms used, and references to other Sections of the document!
Regarding the 230/240v thing:
The Nominal (stated) supply voltage from the supply company is now 230v to 'standardise' us with Europe.
In practice the supplied voltage in most of the UK is 240v, as nothing has actually changed: this falls within the stated tolerance of the supply.
Most properties around Manchester, where I work are fed with typically 247v according to my (regularly calibrated) meter; again, still within tolerance.
'Mains' supply voltage should always be referred to as 230v since this is the 'supplied' voltage in theory.
Any calculations for sizing of condictors / circuit protection are always based on 230v.
Ste. P.
EDIT:
Sorry, to clarify in the interest of having my facts right (which seems very much the order of the day here!):
BS7671 is non-statutory.
It may however be used in a court of law in evidence to claim compliance with a statutory requirement.
It should be noted that BS7671 is referred to in the Electricity Safety, Quality and Continuity Regulations 2002, as being an acceptable standard which will satisfy statutory provisions.
Additionally the H&S Exec. considers compliance with BS7671 is likely to achieve conformity with the relevant parts of the Electricity at Work Regulations 1989.
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Our thoughts are with you Chris and Graham. Fighting with Mavis and Ray 
