these C6 are dirt cheap. Rs 1000-1300.
and accordingly have crap quality. i have used the same leds and they went bad a couple of months of usage.
no problem with regards to wiring. simple plug and play.
you can use upto 55watt with no issues. more than that you need to run a separate wiring.
the only reason this led would cause fire if it was extremely bad quality and shorted itself.