Ouch!  Glad I am running SATA directly from my PSU.

A little over the top, worst case scenario.
 
If the wire is coated in rated insulation and the insulation is intact; I throw the BS towel on this claim.
 
The current and voltage involved is not enough to burn through properly rated insulation and cause a dead short.
 
So the lesson should be; inspect it before using it and do not buy junk --> if the insulation rating is not on the wire it is junk
 

Don't shoot the messenger, I am just passing on a bit of information I read on Crucial site while complaining about my SSD RMA.  I too have used the adapters in the past, but never with a SSD. I am letting everyone know that damage from this is not covered under the warranty.

krane
Don't shoot the messenger, I am just passing on a bit of information I read on Crucial site while complaining about my SSD RMA.  I too have used the adapters in the past, but never with a SSD. I am letting everyone know that damage from this is not covered under the warranty.

Not shooting the messenger; thanks for sharing your find
 
To be clear Crucial's message seems odd.  The only part I do 100% agree with is, that a quality PSU is a MUST!
 
The most over looked, taken for granted, important part of your build is the PSU--> not the place to look for large savings unless it is on sale.