Please look at the two 6 foot cords I am contemplating. I'm not an electrician. Which would replace my M4 2024 10 core iMac (A3137) power cord. I think the cord must be a IEC320 C5 to NEMA 5-15P 3 prong, (143W Power Adapter Extension Cable), whatever it's called. One cord is rated 1250 watts. I just don't understand volts and watts to start a fire or burn the iMac up. The original power cord is 3 meters long, just too short.