SurfHawk wrote:Line 232: No failures on my S280's.
Updated. Thanks! You now have over 25 device-years of operation without any failures.
pclifton wrote:Sorry to hear of your M250 failure.
Line 219 - no failures but four of the M250s have been removed and replaced with S280s in July of 2016 to take advantage of the higher power rating of the S280 with the SolarWorld 275watt modules . Number of installed M250s on that spreadsheet line is now eight.
Line 236 - no failures of the S280s attached to the Sharp 235watt modules.
Need to add another line for four S280s that are attached to the SolarWorld 275watt modules .
Thanks, pclifton! Since I do not have any installations of S280s before September of 2016, I'm wondering if your July of 2016 date is a typo. Since you provided an update in February of 2018 without a mention of this change, I am going to put your latest changes in as of July of 2018.
Please correct me if my correction is in error.
With the above changes, the overall MTBF of the M250s with one total failure now stands at 450 years. The overall MTBF of the S280s with no failures is above 154 years.