in AC, which is what home electricity uses, the polarity is constantly switching, from + , then - , then + , and so on, 50 or 60 times a second depending on where you live. This means that, unlike batteries, it’s symmetrical, and you can just splice the cables and attach two male plugs together and they will work regardless, even if you somehow attach the neutral to live and live to neutral, in fact in many countries you can actually buy just the plug without the cable and then you can assemble it yourself in whatever way you please.
of course tho, this should be done only if you have a decent understanding of electricity, and it should not be attempted by someone who lacks those competences, hence why hardware stores “gatekeep” male to male plugs. If you really need one and are sure you understand how they work, you can probably make one yourself.
(If you) are sure you understand how they work
And
If you really need one
I understand how power systems work. But, I can’t come up with a situation where I’d use a male-male AC cord rather than a safer and more reliable alternative. Most relevant is simply cutting off the female termination and reterminating through a breaker to the outlet ($15 and 15 min).
Picture this: It’s 8pm in early December. You’ve been hanging lights on your house since about 10 this morning, and it’s long after dark. As you’re laying the last section, you realize that you’ve got two female connectors next to each other. Do you tear it up and do it again, or do you hack a solution together so you can go inside and thaw?
The suburban solution is to create a false dichotomy to rationalize outsourcing a simple electrical issue to Lowes.
The hack solution is to cut two ends and reterminate them.
I’d hack it. To do it well it’s 8 crimps, wire loom, and harness tape. So, 10 minutes and $5.
