> 1000 watts on a 12v system is 83 amps, > Most car batteries are rated for a much higher drawing when the starter motor > is in use so > It should not be a problem .
Have a look at the thickness of cable that runs the short distance from battery to starter. > I would suggest a good connection system is constructed as with that sort of > current drain > a flimsy Cigarette lighter plug is going to get hot, very hot ! Yup. I've melted one or two :-) > Dependant on how long the lights are to be run it would seem a modest outlay > to carry a > lorry battery or two so the inverter can be run from them rather than the > vehicles system > as that could just leave you stranded (Murphy's law) Probably best to use caravan 'deep discharge' types of batteries for this application since even lorry batteries are designed to mostly run at full charge, and even a few deep discharges can seriously lower their capacity. This reminds me that quite a lot of our experimental kit was obtained from a local caravan specialist - probably another good source of advice and supplies! Whilst people are asking about the subject, there are one or two other points to be vary of when using car electrics to power electronic kit.. --The running voltage is usually just over 14 volts during normal use --Beware of voltage spikes - when various electrical items are switched on or off you can easily get momentary spikes of +-45volts or more. Car electronics are designed for the very noisy power environment - your digital camera adapter -may- not be bye for now Keith Cooper Northlight Images http://northlight-images.co.uk Photography - Digital Imaging - Apple Mac Consultancy Tel +44 (0)116 291 9092 Mobile +44 (0)780 162 9397 =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
