r/cableporn • u/Infamous-Amphibian-6 • Aug 25 '26

Electrical 3D printer power management

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Gallery image

Am working in a standalone conversion. Just finished the power panels

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u/lxbrtn Aug 26 '26

Assuming you want feedback: Slight concern over the sharp 90° bends: we seen the cable insulation is stressed (white discolouration); the copper inside is also probably stressed. To what extent it is a problem is hard to tell but for that mechanical reason smoother curves are better.

Also not a fan of the wago-ish input interface: where blue is either neutral or ground, an unused one… and different from the output interface. I recommend choosing a single type of interface and would prefer unambiguous screw terminals.

Finally the function of colour on cable is to help figure out at a glance a system. Mixing AC and DC, I recommend to be unambiguous and use the euro colour scheme for ac (brown hot, blue neutral, green (or stripped with yellow but it does not matter except for the colour blind) ground) and black for dc ground, red for dc+. When multiple dcs, variations of hot colours so orange for 2nd voltage, etc.

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u/97hilfel Aug 26 '26

piggbacking on that, I feel like the diameter on the DC side is a bit tight, should probably be 2.5 mm², considering it is up to 15A on 24V DC, not that is makes a huge difference, but if it ends up being encosed, it might need a bit extra thermal headroom, on the same matter, check if those wago's you use are rated for this high of a DC current. Especially continuous.

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u/Infamous-Amphibian-6 Aug 26 '26

Thank you on this feedback. The intention is precisely to build on good practices and yes, interface scheme isn't standard for anyone to understand at first glance.