i want to join multiple solar panels into a bank so i only need one length of wire, i am going to use diodes to stop them sending power back into the one before it. is this ok or do i need something else?
Check out some of the videos on YouTube on this subject.
Maybe. It depends on the panels involved, and what their output is. Not all panels are able to be daisy chained.
It sounds like you intend to put them all in parallel, since you mention blocking diodes. If the panels are all roughly the same voltage, that should work. Mismatched panels will also work, but there may be little to no contribution from the lowest voltage ones if they are severely mismatched.
That depends on the product of solar panels you buy. I was recently talking to an installing company that sells solar panels that have the DC to AC built into each panel. That way you could simply string them together and add as much as you want as you can afford it. It really isn't much more expensive than any other method of install.
