Recently a cable connecting riser to PSU melted. Do people here use any smoke alarm to get notification? Any recommendations would be appreciated. Thanks
If the cable melted you should really take a second look at this. Melting cables = overload. Always try to use 6 pin cables when connecting risers to PSU. MOLEX is so-so and avoid SATA cables at all cost.
I am very confused with this. Are you suggesting below wire not to be used?
https://www.amazon.com/gp/product/B08BQZ8LQN/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1Yes...because the Supply side (sata) is not rated as much wattage as the load (6pin pcie) side can draw.
In this case Sata is 54w max...6pin pcie plug is 216w but should only draw a max 75w due to its use here.
Regardless its a problem. For some gpus its not a problem. In your case it was.
Best way is to use a pcie 6pin. You can even take and use a Y splitter to take 1 6 pin into 2 pins (to power say 2 risers). 75w + 75W = 150W which is less than the 216w a 6pin can handle. See links to psu cable and wattages i listed above.
Remember you have to add all the connection on the same chain together and respect the watt limits.
People use the sata because they are cutting corners on thier psus.
Anyways...thats the maths behind the power. Stay on the right side of the limits and you should have zero issues.