I'm going by memory here and I am most definitely not an electrical engineer.
Short version is the inverter is the magic in the equation, and it will limit its draw on the batteries to what the whole package is engineered for (including battery leads). The inverter determines the draw on the batteries and will insulate the battery leads from bursts that would overheat them, generally using capacitors. Like a PSU in a server or workstation, the rating is for bursts not sustained output, and the way they handle busts is (usually) capacitors. Sent from my mobile device, please excuse any typos! ________________________________ From: Vermont Area Group of Unix Enthusiasts <[email protected]> on behalf of Anthony Carrico <[email protected]> Sent: Friday, December 19, 2025 4:51:07 PM To: [email protected] <[email protected]> Subject: Re: UPS wire gauge on a windy day On 12/19/25 16:25, Paul Flint wrote: > Dear Anthony, > The batteries are capable of AMPs well in excess of 40 AMPS, but not for > long. True--I guess time (and short wires) must be the key. They spec it at full power for 2.3 min (and it will produce 33BTU heat during that time). Somebody must allow you to pull (up to) 62.5Amps through 12AWG wire for 2.3 min with that amount of heat. I wonder where that is written down? -- Anthony Carrico
