[Q] Samsung Charger Wire.

Hi for the past week I've noticed that the charger wire that came with the samsung fast charger gets really hot on both ends (USB and Micro USB ends) it gets hot to a point where if you hold the end for 5 seconds you'd want to take your fingers off. The metal part of both ends are even hotter. This over time causes the battery/phone to get warmer and warmer and eventually to around 40 degrees.

I had another wire which I bought a few months ago (some griffin data cable) and tried using that. That wire just gets warm on both ends and seems okay as it doesn't get as hot as the original samsung wire, and the phone doesn't get hot either (stays around 33degrees battery).
When using the griffin wire it still shows Fast Charging and seems to charge just as fast.

Should I stick to using this griffin wire and can I use any wire with the Fast Charger? Also could I possibly have a dodgy Fast charger? I only noticed this a week ago after reading problems about accelerometers not working etc and I am not sure if It always got this hot from the day I got the phone/charger.

Also if I continue to use the original wire what would be the safest temp to let the battery go to before I should just get rid of the wire, I've only seen it hit 40degrees which i've then just turned off the charger.

Thanks for your time.

EDIT: Since I am in India at the moment and will be going back to the UK in under a week should I just buy a Fast Charger from Amazon with the UK plug pins, would the Qualcomm http://www.amazon.co.uk/Auzest-Qualc...ast+charger+s6 work just as fast as the original samsung fast chargers or should I just get a Samsung one from a Samsung store in the UK (I suppose it will cost a lot more though)