These are probably obvious or "duh" questions but I want to make sure . . .

When soldering wire to Flexwatt:

Is there a certain solder to use?

Will the heat from the solder melt the cover of the Flexwatt so that the wire is connected or do I need to prep the Flexwatt?

I have 4" Flexwatt in 12" lengths and want to wire in parallel. What gauge wire should I use?

I plan on covering everything up with electrical tape after I'm done

Thanks for any help

Jim