Top all-time · #15721
blog.se.com
Company blog · blog.se.comhardwarebusiness
blog.se.com is the company blog at blog.se.com, writing about hardware and business. Since 2021, 5 different Hacker News readers have linked it 6 times. No feed was found, so read it on the site itself.
Too few sampled comments (4) to say how often HN recommends it.?
Why HN links it
Schneider Electric's blog posts on data centre power and cooling, including planning for megawatt racks, and on the ANSI 61 grey colour standard for switchgear. Commenters cite them as sources without judging the writing.
Summarised by Claude from a sample of 4 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
What Hacker News says?
> We produce 1.6x the amount of food the world needs. [...] By market theory, prices for food should be almost negative Can I get a source for the 1.6x figure? I suspect it's 1.6x on the field , but doesn't factor in losses in transport/processing. By the same logic, we generate 110%[1] the amount of electricity that the world demands (at the power plant, 10% is lost due to transmission losses), therefore electricit…
Comment linking /energy-management-energy-efficiency/2013/03/25/how-big-are-power-line-losses/
on “At the world's oldest social housing, rent hasn't changed since 1521”Submitted Scaling AI is now constrained by energy, cooling and physics as a story · 2 points
HN discussionNVidia has been talking about 800VDC 1MW racks for about a year now.[1] They're trying to get others to solve the power and cooling problems. The Schneider Electric view: [2] The view from Flex.[3] This was being talked about more in 2025 than it is now. Nobody seems to have deployed a 1MW rack yet. There are major problems to be solved for that level of power density. The fire protection people want racks in firepr…
Comment linking /datacenter/2025/10/16/the-1-mw-ai-it-rack-is-coming-and-it-needs-800-vdc-power/
on “A.I. Companies Are Recruiting Electricians and Carpenters by the Thousands”Submitted Green datacenters and Greenland: Some thoughts about economic development (2012) as a story · 2 points
HN discussionThe IEEE and ASTM decided that ANSI 61 Gray is the color that all low-voltage (under 1000V) switchgear should be painted. https://blog.se.com/datacenter/2013/04/09/two-shades-of-grey... Electrical panels are installed in mechanical/electrical rooms or outdoors, there’s zero point in having a cream colored panelboard cover or enclosure. The coating is to protect the metal, not for aesthetics. Colored conduit is avail…
Comment linking /datacenter/2013/04/09/two-shades-of-grey-in-the-data-center/
on “Heat pump sales rise 17% across Europe in Q1 as energy prices surge”Megawatt racks are coming.[1][2] 10x or 20x more than current practice. There is a lot of plumbing involved. See [2] for more than you really want to know about the plumbing. "You got 400 gallons per minute?" for his rack, the sales rep asks. He's saying that you need to start planning for power and coolant flow far beyond what data center planners previously considered. That kind of energy density is scary. [1] htt…
Comment linking /datacenter/2025/10/16/the-1-mw-ai-it-rack-is-coming-and-it-needs-800-vdc-power/
on “GLM5.2 on AMD MI355X at 2626 tok/s/node at over 2x lower cost than Blackwell”
