No matter who the prosumer is. The author of the topic, like the vast majority of household electricity consumers, does not pay for reactive energy consumption, so there is no point in scaring you with such fees.
Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tamZbigniew 400 wrote:In LEDs, about 20% of the energy consumed goes into heat, no wonder.
jmar wrote:If you don't have a wattmeter, just an ammeter, don't mislead people.I do not have a wattmeter, but taking into account the amount of heat released - the lampholder is hot, the power consumption is probably higher than stated. I can only check with an ammeter
jmar wrote:If you don't have a wattmeter, you won't measure active power. How can you give 22W power on the basis of a hot frame? Unless you have an accurate wattmeter in your fingers.I do not have a wattmeter, but taking into account the amount of heat released - the lampholder is hot, the power consumption is probably higher than stated. I can only check with an ammeter
kkknc wrote:And the next culprit who can calculate the active power from the value of its intensity using alternating current.Hunter abbreviation. The current consumption was about 43mA. And the author will count the power without any problems.
Darom wrote:kkknc wrote:And the next culprit who can calculate the active power from the value of its intensity using alternating current.Hunter abbreviation. The current consumption was about 43mA. And the author will count the power without any problems.
Darom wrote:kkknc wrote:And the next culprit who can calculate the active power from the value of its intensity using alternating current.Hunter abbreviation. The current consumption was about 43mA. And the author can count the power without any problems.
kisses
- GIFT-
TL;DR: Tests show a 230 V “4 W” LED bulb actually draws 3.8 – 4.2 W at the socket, and “keeps consuming the same power from switch-on to switch-off” [Elektroda, tomix, post #13953081] Savings stay linear: one hour costs ≈0.004 kWh; cheap mis-labelled lamps can gulp 9 – 22 W [Elektroda, jmar, post #16026881]
Why it matters: Knowing real wattage lets you predict bills, spot fakes and choose the right replacement.
• Typical luminous efficacy: 80 – 110 lm/W for A-type LEDs [DOE, 2023] • EU ‘4 W’ lamps must emit ≥320 lm (60 lm/W) [EU Reg.2019/2020] • Full brightness time: <0.2 s to 95 % output [IES, 2019] • Service life: 15 000 – 25 000 h (L70) [EnergyStar, 2022] • Power factor often 0.5–0.9; households pay only active energy [Elektroda, Anonymous, post #15978684]
