I’ll write out a count without a digit if it’s immediately next to a value. Like without other qualifiers: “three 500 kVA transformers”, versus “3 500 kVA transformers” (horrible), or even “three [3] 500 kVA transformers” (acceptable, but perhaps cluttered)

(Also note the space between value and unit—technically required but I’m not consistent about it)

Hello, I’m void. Lifelong Michigander; catch me weekly dancing at R1 GLC. Other interests include free software, metal and industrial concerts, bio implants, and fermented foods—both homebrew and vegan goodies.