Breaking in power cords

I refrained from Fisher-Price brand with a lightbulb inside cracks .

Very unusual appliance. 16AWG PC...? My 240V antique is a 3-10AWG PC. The 50 min. may 'splain it all, since it should be 'bout 30-40 min, tops.

No SST, but cleaned the PC brass prongs, and used one of the Caig products...

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Refrigerator is my first choice. Easy and it's running 24/7 anyway. Audiogon member subaruguru sells cords fairly cheaply that makes the process easy.
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I found that my power cords kept getting better with up to 900 or more hours of break-in (I used to run my CD player 24/7 on repeat at low volume. Hooking up to the refrigerator gives you 168 hours per week and over 700 hours in a month.
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Respectfully; if your refrigerator runs 24/7, it's broken.

Shasta -
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I know the refrigerator cylces on and off. I was referring to the idea that you can set it up and walk away from it and it will be running on and off constantly 24/7
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If your refrigerator is running, go catch it!