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Posted: Wed Apr 14, 2010 8:36am

Post Subject: Vanishing Elecrricty

Hi Tony, I have a standard household consumer meter fitted ( by the previous owner) on the mains input on my boat, it is connected immediately after the input socket it then goes to the Victron Inverter/charger and then to the main breaker/ RCD. However when I am connected to the shore power there is a huge difference in the readings of the boatyardâs meter and mine by approx 5 times. I have had the power cable tested with a professional Megohmeter (500v 100 M Ohm). My meter shows a consumption of around 2-3 Units per day when on board, which comes in with what I calculate, and about 1 unit when the batteries are trickle charging when I am not on board, and everything is turned off. I have connected an ammeter to the mains input between the input socket and the consumer meter and watched it for 4 hours whilst it was trickle charging, it showed 0.15 A on the mains, whilst my 12v ammeter showed that the batteries were being charged at 0.3 A. The boatyard has tried 3 different meters and there is an RCD on the boatyard supply. I am completely baffled and would appreciate your help.


Posted: Wed Apr 14, 2010 8:43am

Post Subject: Vanishing Elecrricty

Dear Tim, I regret that it would be unwise of me to do anything that might be interpreted as encouraging persons who's competence is unknown to work on 230V AC systems. I must advise that you seek the assistance of a properly qualified professional. I note that you have not had your consumer meter tested and calibrated. Sorry. Tony Brooks

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