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  1. Maine Sail

    Alternator shutoff switch?

    While we sell these, as a Victron dealer, for certain applications, we've also seen a few failures. We advise our customers to over-size these by a pretty hefty margin. Eg: 200A model for a 100A - 125A alternator.. Not yet seen a single Blue Sea Systems ACR fail, even when incorrectly wired...
  2. Maine Sail

    Surveys are a waste of money

    For SAMS & NAMS this is not the case at all....
  3. Maine Sail

    Surveys are a waste of money

    150% Disagree. You chose a poor surveyor and are now bashing the entire industry. There are bad doctors, lawyers, electricians, surveyors etc., but it does not mean the entire industry is bad. We have some tremendous surveyors here in Maine and every survey we've had has cost us $0.00. A...
  4. Maine Sail

    New guy on the ocean worries / horrible radio comms!?!?!?

    That law on Winny was sparked by the death of one of my very good friends fathers. The son of a wealthy marina owner ran smack over their boat, in the dark & totally drunk. The defense tried to claim his nav lights were not on, but they were, and forensics proved it. The drunk scum bag still...
  5. Maine Sail

    Alternator problems

    What size was the breaker? Brand & model? Fuses should be used for this application, not a breaker, at 140% to 150% of the alt output rating. 140% is 230A and 150% is a 250A fuse.. Blue Sea systems does not even manufacture a breaker large enough for an AT165. Thermal Type breakers should really...
  6. Maine Sail

    Alternator problems

    A rectifier failure would be extremely rare in this series alternator. Balmar is using avalanche diodes in these and they are way over-sized. A more common failure is it being over-heated due to the regulator not being set up correctly for the bank..
  7. Maine Sail

    Balmar SG200 battery monitor

    Bingo!
  8. Maine Sail

    Alternator problems

    We'll need more information.. How big is the battery bank (Ah capacity)? How low do you discharge it? (11V is grossly over-discharged and can work an alternator really hard) What chemistry is the battery bank flooded, AGM, GEL, LiFePO4? How was the regulator set up/programmed? Where was the...
  9. Maine Sail

    12V Fans - Quiet, Durable

    Our Caframo Bora's are about 15 years old and still going strong..
  10. Maine Sail

    Westerbeke 42b 4 cylinder engine manufacturer

    Most are Mitsubishi but some larger models are Isuzu. Westerbeke however has a contractual agreement with both engine makers and no dealer of Mitusbishi or Isuzu engines is allowed to sell components for a Westerbeke engine.
  11. Maine Sail

    Yanmar 3jh3e alternator upgrade

    This will help explain it: https://marinehowto.com/automotive-alternators-vs-deep-cycle-batteries/
  12. Maine Sail

    Yanmar 3jh3e alternator upgrade

    What is Belt Load Manager set to? What temp is your alternator temp sensor set for? What is your battery bank, brand, model and Ah capacity?
  13. Maine Sail

    Changing SG-200 Advanced Settings.

    Set Ah, set chemistry and use it. For optimal Firefly cycle life 13.2 Float and 14.4V Absorption..
  14. Maine Sail

    I have a Catalina 34. Wanting to upgrade my alternator. The Catalina site shows a prestolite 105 they say will work. Any input, ideas?

    If you want to use that Chinese clone alternator from CD you'll need to convert it to external regulation as the 3/8" belt is going to really suffer. This is why we build our CMI-72-IR model..
  15. Maine Sail

    Yanmar alternator loosens way too often

    This article may help: https://marinehowto.com/marine-alternator-installation-tips-tricks/ This is how we lock down tension arms..
  16. Maine Sail

    Battery Gremlin

    A Blue Sea switch at year 5 would be an extremely rare failure. Focus on cleaning all terminations, pos and neg side in the battery circuit. Check all crimp terminations as well.
  17. Maine Sail

    Battery Gremlin

    How old is the battery switch? Where is the noise emanating from?
  18. Maine Sail

    Windlass suddenly tripping main breaker

    Bank fuses need to be within 7" of the positive battery terminal on each bank, when the banks are in different locations..
  19. Maine Sail

    Windlass suddenly tripping main breaker

    Each side of the positive parallel jumper needs a fuse. 250A is the bare minimum we advise for any bank that could be called on the start a motor. We strongly advise 300A and the wire to support it. MRBF fuses are excellent
  20. Maine Sail

    What Starter Battery???

    The open circuit voltage has no direct comparison to state of health of the battery. I can't even begin to tell you how many deep-cycle batteries we've run 20 hour tests on, that can deliver a perfect 24 hour resting voltage of 12.72V or higher, and that will still pass specific gravity readings...