Originally Posted by friendofacatahoula
The SC2030 is a 30amp controller fyi.
-Up to 30 amps maximum solar current. Charger will safely reduce output if panel current exceeds 31 amps.
Here is what Ralph Hiesey has to say (Engineer,Founder and owner of Bogart Engineering)
C4. What happens if my panels try to put more than 30 amps with your SC-2030, 30 amp Solar Charger? Will that damage it? Click for answer
No, it will not. Incidentally, it is actually a 31 amp charger. If you try to put in more than 31 amps it will limit the current to protect itself. So it is OK to use panels that normally have a maximum of about 30 amps or even more, but which may occasionally exceed that if cloud effects on a very sunny day cause the amps to go higher.
When that happens the amber light on the charger will flash twice per second to let you know. But if you try to exceed 31 amps, it will not just limit the amps to 31. In order to safely protect the charger, it will limit it to slightly LESS than 31 amps, according to this formula:
A= (31*31)/P = 961/P.
A=Amps into battery,
P=Amps panels try to put into charger when greater than 31 amps.
But you needn't be concerned that this will damage the SC-2030. If you try to use panels that very commonly go over 31 amps, you won't hurt the SC2030, but you will be losing some solar energy whenever that happens because it will be putting in LESS than 31 amps, however it won't be much less so long as the panels don't go much above 31 amps."
It's not often that the owner takes the time to answer "many" E-mail" questions before I purchased his system. A great guy to be sure. Forums are great but.............