What is Reddit's opinion of Pinfox 6ft 12 Gauge 3 Prong Heavy Duty Replacement Power Supply Cord Cable 110V 115V 120V Pigtail for Appliance, NEMA 5-15 Plug US SJT 12AWG (12/3)?

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So, I looked up the manual and it says it "recommends 12-3 cable with ground". Keep in mind that resistance increases as the cable length increases, so if you buy a reasonable length installation kit it will work fine, even if it's 14 gauge. However, if you want a 12ga cable, Amazon has one at https://smile.amazon.com/Pinfox-Replacement-Pigtail-Universal-Appliance/dp/B07QYR9C9K. I'm sure there are others, but that was the first one I saw with good reviews.

You might need a help from an electrician but an extension cord can have removable plug, like this one:

https://www.amazon.com/dp/B07QYR9C9K/

https://www.amazon.com/Journeyman-Pro-Connector-Straight-Replacement-Commercial/dp/B07P764N5V

If the extension cord has low gauge (high amp) and is not too long, it should work fine but don't use one with high gauge or don't use one that's long or else it could overheat and cause fire. You should also ask an electrician for additional safety details (he/she might tell you about things like not leaving the plug near water, not leaving it half plugged etc.).