What kind of terminals?
New to this....I,ve read that the wire size is very important in DC apps. How would I go about connecting atleast #4 wire from this controler to the battery bank? The holes are so small '> '>
Forum Discussion
2oldman: many controllers, especially those cheaper ones, have undersized terminals. I guess they in China don't want to use more metal since they have to import it, and they usually don't give a darn about codes and rules of "our" world.
The ampacity of #10 wire is 30A at 60C (150F). So if OP has solar array 350W or more, he needs a better wire than #10 solely to prevent it from melting.
And then there is a voltage drop. So the cable to battery (and for parallel panels - from panels to controller too), needs to be thick enough. You can connect a short piece of #10 to controller, and use Splicer-reducer to connect it to #4 or whatever you want. Wrap it into insulation tape. Both holes are same size and can accept wire from #14 to #2 max. $5 in Home Depot
PS: I'm getting slow. Westend has already posted a link to slicer-reducer.
The ampacity of #10 wire is 30A at 60C (150F). So if OP has solar array 350W or more, he needs a better wire than #10 solely to prevent it from melting.
And then there is a voltage drop. So the cable to battery (and for parallel panels - from panels to controller too), needs to be thick enough. You can connect a short piece of #10 to controller, and use Splicer-reducer to connect it to #4 or whatever you want. Wrap it into insulation tape. Both holes are same size and can accept wire from #14 to #2 max. $5 in Home Depot
PS: I'm getting slow. Westend has already posted a link to slicer-reducer.
