I'm dismayed at electricians disregard for mathematics. I am reading here in my course material that P = 3 * Pfas = UH * I * √3. When I calculate this for a 3-phase resistive load of 20 Ohm on each phase with 230V, I get 3 * Pfas = 3000W, whereas UH * I * √3 ≈ 3012.26 WHICH ARE NOT THE SAME!
Heretics. And I'm about to become one of them?
#electricity #math
gmc
npub1av…lk7jt
2026-10-20 07:26:52 UTC
Author Public Key
npub1avzmax84ckmhxfplway947gm3z8gzx0gw6vu2n7e837cl3szakrq8lk7jtSeen on
wss://relay.momostr.pinkPublished at
2026-10-20 07:26:52 UTCEvent JSON
{
"id": "168111f6a92c87733456f8157c5316868cb07ab2ea862b26eb1887b488f335e7",
"pubkey": "eb05be98f5c5b773243f77485af91b888e8119e87699c54fd93c7d8fc602ed86",
"created_at": 1792481212,
"kind": 1,
"tags": [
[
"proxy",
"https://snac.chasmcity.net/gmc/p/1792481212.856376",
"web"
],
[
"t",
"electricity"
],
[
"t",
"math"
],
[
"proxy",
"https://snac.chasmcity.net/gmc/p/1792481212.856376",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://snac.chasmcity.net/gmc/p/1792481212.856376",
"pink.momostr"
],
[
"-"
]
],
"content": "I'm dismayed at electricians disregard for mathematics. I am reading here in my course material that P = 3 * Pfas = UH * I * √3. When I calculate this for a 3-phase resistive load of 20 Ohm on each phase with 230V, I get 3 * Pfas = 3000W, whereas UH * I * √3 ≈ 3012.26 WHICH ARE NOT THE SAME!\n\nHeretics. And I'm about to become one of them?\n\n#electricity #math",
"sig": "1347295f7e83352c01120b4fe37c320a81d008e01d6eb39c51dc9f9256fd59d5f4b4c0b3394862801723bd6c1a5cc21f4041ee14a7cd5cec0531bd3018962a64"
}