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Old 09-03-2018, 02:03 PM   #1
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Thumbs down Having issues with the shore power

This is our first season as boat owners- Maxum 3000 SCR.

The last couple of weeks we have come to the boat and had dead batteries although the shore power has been hooked up and shoving 110 volt on the meter on the switch board. Did see the GFI had tripped after a serious thunderstorm. Reset it but still do not have any power on the boat. Lights gages etc.

Any suggestions?

Kiml
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Old 09-03-2018, 02:25 PM   #2
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If you're showing 110 AC on the meter. On both line 1 & 2?
Verify that the breaker for your battery charger is on.
Check that 12v battery switches are on.

Start there.
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Old 09-03-2018, 04:21 PM   #3
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110 volts both line, battery switches on "ALL" battery charger breaker "ON"
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Old 09-03-2018, 09:22 PM   #4
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You need to verify the battery charge is connected to the batteries and working. Lights, gauges, ... are 12 VDC and get power from the batteries so if they are not being charged they will run down if you are leaving any 12VDC item on which I donít recommend anyhow. What are you leaving on while away?
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Old 09-03-2018, 10:30 PM   #5
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Default issue with dead batteries

Nothing is left on that I know of. Battery switches are on " ALL", battery charger swith is "ON" as are both main switches.
Have not seen any polarity warning.
Bought a jump box and will try to start the engines tomorrow.

We have had a string of heavy showers, and although the cockpit cover deflect most of the rain we bailed about 30 gallons out of the bilge as the bilge pumps are not running either
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Old 09-04-2018, 01:47 AM   #6
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I would set the battery switch to off when away. The bilge pumps should have a float switch that does not require the battery switch to be on. 30 gallons is a heck of a lot of rain! Are you sure it was that much?
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Old 09-04-2018, 02:15 AM   #7
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I've never seen a bilge that will hold 30 gallons of water without the starter getting wet.
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Old 09-04-2018, 12:53 PM   #8
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With 110 AC to the panel and the breaker ON for the battery charger, bilge pumps should run. Charger is directly connected to batteries (or should be) so switch position shouldn't matter for them to run. There is an in-line fuse for the the pump in the positive lead on the battery. Verify that it's not blown.

Next would be working thru this same circuit with a voltmeter.
With shorepower off, check voltage at battery. Turn in charger. Check voltage again. It should be higher with charger on.

John
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Old 09-04-2018, 02:30 PM   #9
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If the shore power is connected; breaker on the post on the dock is on; cables plugged in; the Main breaker is on; breaker for the battery charger is on; and your batteries are still dead, it can only be one of the following:

1) The battery charger is not getting a AC voltage from panel breaker

=> Take voltmeter set to AC, for 110/130. Test connection to the battery charger

2) The battery charger is not outputting on 12v side

=> Take voltmeter set to DC, for 12V. Test connection to the charging leads to the battery (preferably while disconnected from the batter)

2) Battery charger is not connected to the batteries

=> Connect charging leads to the battery terminals

3) Batteries are not taking or holding a charge.

=> Test with alternate charger. Replace batteries if problem persists.
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Old 09-04-2018, 05:24 PM   #10
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Quote:
Originally Posted by shrew View Post
If the shore power is connected; breaker on the post on the dock is on; cables plugged in; Main breaker is on; breaker for the battery charger is on; and your batteries are still dead, it can only be one of the following:

1) Battery charger is not getting a DC voltage from panel breaker

=> Take voltmeter set to DC, for 110/130. Test connection to the battery charger

2) Battery charger is not outputting on 12v side

=> Take voltmeter set to AC, for 12V. Test connection to the charging leads to the battery (preferably while disconnected from the batter)

2) Battery charger is not connected to the batteries

=> Connect charging leads to the battery terminals

3) Batteries are not taking or holding a charge.

=> Test with alternate charger. Replace batteries if problem persists.
shrew you must have had a good weekend because you got your AC/DC backwards. 120VAC and 12VDC
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