Flagstaff MAC Fuse question

Discussion in 'Wiring' started by Jon McDuffie, May 30, 2020.

  1. Jon McDuffie

    Jon McDuffie New Member

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    We recently acquired a 2008 Flagstaff Mac 227. The fourth fuse from the top has blown a couple times. It was a 15 amp. I've replaced it with a 20 amp but as you can see the writing on the left that specifies amp size is very hard to read. Does anyone happen to know what fuse that fourth one from the top is supposed to be? We have a power winch if that makes a difference. Thanks!
     
  2. rabird

    rabird Howdy!

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  3. Raycfe

    Raycfe Waterford Ct.

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    What doesn't work with the fuse out???
     
  4. Jon McDuffie

    Jon McDuffie New Member

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    The only thing I've noticed so far is the power winch is not working. however the battery is powering lights fans etc. So I'm wondering if it's just not charging up enough to power the winch.
     
  5. Jon McDuffie

    Jon McDuffie New Member

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    Forgot to mention that the manual for the WFCO converter states that none of the circuits should have greater than a 20 amp fuse.
     
  6. bheff

    bheff Well-Known Member

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    Your winch should be direct wired to the battery with an inline breaker or fuse.
    Edit: in your pic, circuit 4 almost looks like it says 30 amp. Edit again! Just found a video and it says 20 amp just like Jon mentions.
     
    Last edited: May 30, 2020
  7. Jon McDuffie

    Jon McDuffie New Member

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    Thanks, can you send a link to the video?
     
  8. Raycfe

    Raycfe Waterford Ct.

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    Things that should be protected by the fuses
    1. Dome lights
    2. Water pump
    3. Water Heater if self lighting
    4. Refrigerator if it works on 12 volts
    5. Ceiling/vent fans
     
  9. Jon McDuffie

    Jon McDuffie New Member

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    Just as raw bird mentioned the fuse in question goes to the battery. Given that, does anyone know what size fuse that should be?
     
  10. Jon McDuffie

    Jon McDuffie New Member

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    ...rabird
     
  11. Raycfe

    Raycfe Waterford Ct.

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    no more than 20 amp
     
  12. Jon McDuffie

    Jon McDuffie New Member

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    Thanks all for the help. Love this forum!
     
  13. rabird

    rabird Howdy!

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    see post #2, page ??? 30A, from WFCO's operating manual.

    With a discharged battery, ALL of the 25A rated DC output can go into the battery.

    this manual says max of 25A
    http://wfcoelectronics.com/wp-content/uploads/2015/05/4-3_Operator-Manual.pdf

    Edited to add:

    It is known that the 8700 series WFCO claims a bulk charge voltage of 14.4v and rarely charges at that voltage instead it charges at 13.6v. WFCO is designed to do 4 hrs max @ 14.4v IF the battery is severely discharged. WFCO does not indicate what severely discharged is. but a discharged batt will accept more energy at mid 14v versus 13.6v.
     
    Last edited: May 31, 2020
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  14. Jon McDuffie

    Jon McDuffie New Member

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    20 vs 30. This is why I am confused. See the pictures with my original post. Everyone I show the picture to says that that 4th circuit looks like it says 30. However check out The very last sentence on this page from my manual. It clearly states 20 is the max. So for now I'm going with a 20. MVIMG_20200531_133311.jpg
     
  15. rabird

    rabird Howdy!

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    it also states max 30A for AC which means your older model can not have a 30A main breaker back-feeding the buss!

    They obviously changed the manual over time. So keep your 20 and DON"T over-discharge the battery, no worries but poor battery life with a wfco.
     

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