The Eco-w's new VOC limit
The last Eco-w 20a controller came while we we camping. The first thing I noticed was it now comes in a printed box with graphics and the info on it. The second thing I noticed is on the box the VOC l...
Forum Discussion
Mendy must be from Nova Scotia, calling everyone, "Dear." :)
The general rule for Voc limit is to use the voltage coefficient on the Voc rating (for 25C) and get the figure for the coldest ambient you expect to be camping in, so 45 Voc is still borderline for a pair of 12s at 22 Voc each in really cold temps.
That rule must be just for the first minute after switching on/hooking up because the panel warms up fast in the sun no matter what the ambient is. I think 45 would be just enough to get away with it in many scenarios where 42 would not be though.
I would wait till the panels did warm up in the sun and then hook in the Eco-W to give a little more margin.
Good to know, thanks!
The general rule for Voc limit is to use the voltage coefficient on the Voc rating (for 25C) and get the figure for the coldest ambient you expect to be camping in, so 45 Voc is still borderline for a pair of 12s at 22 Voc each in really cold temps.
That rule must be just for the first minute after switching on/hooking up because the panel warms up fast in the sun no matter what the ambient is. I think 45 would be just enough to get away with it in many scenarios where 42 would not be though.
I would wait till the panels did warm up in the sun and then hook in the Eco-W to give a little more margin.
Good to know, thanks!
