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Search took 0.00 seconds. Search: Posts Made By: noelex 77
Forum: Electrical: Batteries, Generators & Solar 30-03-2019, 08:40
Replies: 60
Views: 8,494
Posted By noelex 77
Re: How much am I getting ripped off for my solar panels?

Manufacturers should rate the wattage of the panels by multiplying Vmp (not Voc) by Imp (not Isc). I must admit I have never seen any manufacturer using anything different, although there are plenty...
Forum: Electrical: Batteries, Generators & Solar 29-03-2019, 22:46
Replies: 60
Views: 8,494
Posted By noelex 77
Re: How much am I getting ripped off for my solar panels?

If the solar panel and controller is performing correctly and the installation is well done, you should still be occasionally seeing the rated output from the panel at 48°N.

The photo below is...
Forum: Electrical: Batteries, Generators & Solar 21-03-2019, 12:54
Replies: 60
Views: 8,494
Posted By noelex 77
Re: How much am I getting ripped off for my solar panels?

The panel’s efficiency can be calculated from the size and rated power.

In this case the panel efficiency is 16.3%. Not the 23-25% claimed (the claim may be for the cell efficiency, not the total...
Forum: Electrical: Batteries, Generators & Solar 21-03-2019, 12:18
Replies: 60
Views: 8,494
Posted By noelex 77
Re: How much am I getting ripped off for my solar panels?

As others have indicated, if everything is working correctly with a solar installation the maximum solar output should be producing close to the panel’s rated power. These periods of maximum power...
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