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If you have enough lead, why not just cut off the HF plugs and convert to standard MC4 connectors entirely? Probably the cheapest solution in the long run versus buying adaptors.Comment
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HAA! why did that not jump out at me .... rookie mistake thank you LOL i feel dumb. its cheap also thanks so much!!Comment
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In your first post you mentioned the Harbor Freight solar panel system you had purchased. The controller that comes with it really isn't big enough to accept more panels especially 100 watt size.
Suggest you purchase another charge controller to be used with the bigger wattage panels that you plan to buy.Comment
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yes of course, Thank you I was looking into a 30 amp model, in my research I have found that, for the 400 watt system i want to eventually be up to. I will need at least a 30 amp CC or is that still to low? I want to have 345 w - 400 w depending if I want to keep the HF panels or not. I will more than likely gift them to friend who I got interested in solar. is a 30 amp CC big enough for a 400w system? Also this is on my r.v but I don't think that matters.Comment
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It would be OK at 300W but 400 is too much
When looking at panels try to avoid the 100W battery panels. They are expensive for the wattage they produce.
What I would suggest is to get a couple of grid tie 60 cell panels in the 240-250 Watt class and a good MPPT controller such as the Morningstar Tristar mppt 45
In the long run you will get more power with a better controller and you will save on the panelsNABCEP certified Technical Sales Professional
[URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]
[URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)
[URL="http://www.gaisma.com"]www.gaisma.com[/URL]Comment
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I agree with Naptown
Those 100 watt panels can cost you $2 per watt as compared to about $1 per watt for the larger 250 watt panels.
Also a 30 amp PWM charge controller due to the way it works (about 77% eff) will drop your total 400 watts to about 308 watts. Using an MPPT CC like the Morningstar will get you closer to 98% of your total panel wattage.
In the end you will spend less money and get more power generation.Comment
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The grid tie panels are more of a commodity where prices become reasonable whereas the 12 volt panels are not produced in such large quantities and therefore much more costly per watt.[SIGPIC][/SIGPIC]Comment
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