Charging cable question-Energy usage when not charging`

[larmor]

Simple question: how much energy, if any, is consumed if the charging cable is left plugged into the wall, but not to the car-- ie the green light on the cable is on..

thnx

 

[boaterva]

Interesting question... we could use a Kill-A-Watt on the circuit in the breaker box to see, and maybe someone has done so? It should be on the order (close order) of mW's, since those should be LEDs. There is no other power consumed, no relays held in, no metering circuitry....

 

[gearchruncher]

My HPWC draws 3.6W when not charging.

 

[boaterva]

So, in a month, it's about 2 kWh (2592 Wh), or on the order of $0.26, at 11 cents a kWh, here in Virginia.

Like an old nightlight!

 

[larmor]

Thanks! I injured my shoulder, and this will relieve removing the charging cable from the wall.

 

[Thax]

My wife also asked this same question. I left it plugged in (mostly because I'm lazy haha). But I figured the power draw is negligible and I'd much rather pay it instead of the wear-and-tear on the socket and plug (and my muscles & bones haha)

 

[arnis]

My HPWC draws 3.6W when not charging.

That is a lot. I hope EU will soon add EVSE's into the list of things that should comply to regulations
0,5W should be enough for controller and LED. That is still 250kW of constant draw per half million Model 3's.

More about Vampires:
One Watt Initiative - Wikipedia