News for hackers. Stuff that matters.

A comment on Europe is in danger of rolling electricity shortages. Parent comment

Re:Europe is in danger of rolling electricity shortages by elric on Sunday September 25, 2022 @01:03PM (#32973388)
I think you've got your units mixed up. 100A @ 120V = 12kW. Assuming the newer homes are 200A, that would be 24kW. 166kW seems ... unreasonable, especially over 120V, that's like 1400A. Toasty.
[ Parent | on HN ]
Re:Europe is in danger of rolling electricity shortages by ars on Sunday September 25, 2022 @01:14PM (#32973502)
US homes are measured at 240 volts. 100 amp would be on each of the 120v legs.

High power US home is 200 amp times 240 volts. More typical homes are 100 amp or 150 amp.

[ Parent | on HN ]
Re:Europe is in danger of rolling electricity shortages by kennend3 on Sunday September 25, 2022 @02:05PM (#32974101)
As the other person posted, you are mistaken.

Houses in north America are fed with two 120V "legs" and so the 100A is actually at 240V.

[ Parent | on HN ]
Re:Europe is in danger of rolling electricity shortages by bombcar on Sunday September 25, 2022 @01:06PM (#32973431)
Ah I found 200 amps at 220 threephase which is still a bit more than most houses.
[ Parent | on HN ]
Re:Europe is in danger of rolling electricity shortages by quickthrowman on Sunday September 25, 2022 @03:41PM (#32975218)
Your math was still off, 200 amps at 220v three-phase is ~76.2 kW.

200*220*sqrt(3)=76210 watts

[ Parent | on HN ]