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About mz-Blue

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    Ottawa Canada

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    IT Professional
  1. Inverter Will Not Shut Off

    Good point. I suppose I should open it up and see what the situation is inside. Should it be apparent if it is melting/burning via a visual check
  2. Inverter Will Not Shut Off

    I had disconnected the batteries from the inverter. And will use method 1 and install an switch in line before the inverter. That is a simple low cost solution. Thanks
  3. 12V vs 24V System Which is Best and Why

    Thanks. In that case I will stick with the 12 v
  4. Hi I curently have a small sysytem at my cottage that due to the equipment that I had available runs on -24V panels (440 watts) then is converted to 12 v at the charge controller then stored in a 12 volt battery array made up of 6 75ah batteries ( 450 ah total) I had a 12 v to 120 inverter that converted the power to run my cottage lights and appliances. Given that my inverter has malfuntioned, i need to buy another inverter. I am considering buying a 24v as I heard that they are more efficient (however more costly). What are the pro and cons of switching and exactly how musgh more efficeint is it to switch from 12 to 24 volts. I know that a 24 volt inverter would be about 2 times the cost and I will have to buy another charging unit if I want to charge the batteries. If it really worth it to switch from 12v to 24 volt arrays for batteries?
  5. Inverter Will Not Shut Off

    I tried to shut my inverter off, however even if I shut off the power switch at the front it stays on, Any ideas as to how to fix that?
  6. Battery Isolation

    good idea , i will buy one. How exactly do you use them?
  7. Battery Isolation

    Hi WotEver So to separate the batteries , how would I do that ? do you mean to unhook them from the others and the inputs and draws and then measure the voltage. How long should they be unhooked and what would be considered a bad voltage. For example my batteries (my new ones) were charged a week ago and the are not hooked up to anything, so the have been at rest for a week as I have not yet installed them. Three of the batteries read 13.07 volts, one is 13.04 and one reads 12.96. Would the 12.96 volts be considered bad. Also regarding the mixing of batteries In this case I could not mix them as my old bank is "wet" and my new batch is a gel type, so I believe that they would not work well together as they have different settings on the charge controller.
  8. Battery Isolation

    How would one determine when a battery needed to be removed from the bank
  9. Battery Isolation

    Hi I have a solar panel sysyem and I recently upgraded the panel so am producing more power, So I purchased additional batteries (6x75 Amp hr) . I have an older bank of batteries (about 3 years old thet are still good) . Any suggestions of how I can isolate the baterries , perhaps using a switch and isolater and then being able to switch off to the inverter to provide power. So to summarize. Having an option at to switch battery banks to charge ( or can I charge at the same time using a battery isolater. And then selecting the battery bank ( bank A or B to feed the inverter. What I am trying to avoid is using different vintages of batteries as they will diminish the quality of the good batteriries Cheers Mike
  10. Battery Bank Wiring

    Thank you for your quick reply. Yes it does help. I have looked all over my town for a busbar and they are really hard to find. The best I can find is a busbar rated at 210 amps which has 4 terminals on it. I assume that I can join two batteries to each terminal and then use the 4th one to connect to the inverter. Below is the link to the specifications. fetch.php Given that the busbar is only 210 amp , will I have problems as you suggest an 300 amp fuse? Do you know the formula to use to calculate the amperage that it will generate. Is it the batteries or the inverter who will generate the amperage? I currently have 4 gauge wires that I had hoped to use they are in fact only 21 mm. am I at risk here? Also before the battery bank in the feed from the charge control. I assume an 40 amp fuse will be appropriate? Thank you kindly for taking the time to help me with my design. Cheers Mike
  11. Battery Bank Wiring

    Hi I would like to know what the optimum configuration would be for both 6 and 8 batteries would be for a solar 12 v battery bank. The batteries are all 12 volt and 75 Amp hour each and the output should be 12 volt. Below is the setup from your site indicating how to wire 4 batteries. Also what size wires should I use for this setup and where should I place the fuses and what size is optimal Also using your method 4 could you please provide me with a wiring diagram for the above mentioned 12 volt batteries that are 75 ah each.. Also what gauge should the wires be for joining them. Should there be a fuse in the system? this would hook up to a 1500W inverter and I asssume that I should have an fuse both before and after the batteries. The Solar panel is 480 watts at 24 V. The Charge Controller converts this to 12 volts so it would produce 40 amps as a max when it reduces it to 12 volts. So, thanks to a colleague, we can also present another wiring method that achieves perfect battery balancing............... Method 4 And here it is. This looks odd but it's actually quite simple. What has been done here is to start with 2 pairs of batteries. Each wired in the proper "cross diagonal" method. Then each pair is wired together, again in the cross diagonal method. Notice that for each individual battery, the current always goes through a total of one long link and one short link before reaching the loads. This method also achieves perfect balance between all 4 batteries and may be easier to wire up in some installations. Many thanks to "smileypete" from www.canalworld.net/forums for this idea.
  12. mz-Blue