Hi from Whangarei, NZ.
I have a Heart Interface 1000 Inverter Charger
that is creating a 1.5Amp load on the batteries
with all circuits off. I measured this with MultiMeter set to 10Amps and placed probes between negative terminal of the inverter
and negative terminal of house bank. The inverter/charger is directly wired to battery
for instant charging
when shore connected, and sensing need for inverter AC current
when not connected but 230V AC is required.
With everything else switched off I isolated the inverter fairly quickly as the problem because the other main negative cable terminal is the return side for everything else as far as I can work
out, and it showed a flawless 0 Amp load. I should mention I have two Alternators working off the same engine
the house bank and starter battery
. I have a Next Step regulator
for them or it(?). I don't know if one alternator
is internally regulated for the starter battery alone or whether the smart regulator
does both alternators. I also have a BEP battery monitor
The standby load for this inverter/charger is specd @ .12 amps. When testing in situ the load was 1.5 Amps. I have four 232 Endurant 6v deep cycle house bank connected in series parllel to give 12, 464AH. They are less than 10 months old. The installation
has been professionally wired and the original house bank lasted about 7 years.
I removed the charger
from the boat
and brought it home for a closer look. What I found when I did the same test at home with no AC connections to the machine (either incoming or outgoing) whatever on the output side was a standby load of only 15 milliamps, which seems much closer to specs and certainly a long way from the 1.5amp drain I had with circuits connected but the AC panel switched off at the breakers.
Is there a standby load associated with circuit breakers? If they are switched to the off position, am I right in thinking there must be some draw/load between the inverter and the breakers? What could that be?
The only other standby load that I was aware of was the Stereo which was always powered even with main isolating battery switches off. I didn't like that so quite a while ago I rewired it to the distribution side of the main battery isolating switch.
Then I realized (only recently) why it was wired that way...now I have no stereo at all because the standby function kept the code alive!
The house bank and the starter battery were essentially dead after arriving at the boat
to give the engine
and systems a run after a prolonged absence from the boat. The house bank batteries
were able to be brought up ok with an equalization
charge by my supplier, but the starter battery was replaced.
I know there are people on this excellent forum that are very knowledgeable about these sort of issues, so thanks in advance for your responses.