(EVSE) Resistance Is Futile

[MellowJohnny]

Lots a threads have mentioned losses in actual kWh delivered to the Mach-E via the Ford portable charger (and all EVSEs in fact), from things like heat.

In case you were skeptical, here's a bit of visual proof from charging the car last night. The cable was lying on the ice & snow covered driveway in -10c all night and still managed to melt through the ice. Pretty interesting.

Resistance is indeed futile...

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[65MustangBoy]

That is not unusual. Doesn't mean the cable gets hot, just enough above 0C to melt the frozen stuff.

I put out large Christmas light display and the same happens with the extension cords I run through the yard.

 

[Guss-E 2021]

I still like the title of the post ?

 

[MellowJohnny]

That is not unusual. Doesn't mean the cable gets hot, just enough above 0C to melt the frozen stuff.

I put out large Christmas light display and the same happens with the extension cords I run through the yard.

Yep, not unusual at all, just thought it was interesting to actually "see" the efficiency loss via heat. You can also see that the heat radiated out a few mm from the cable, as the pattern it left is not the exact shape of the cable.

 

[azerik]

They get pretty warm even at 32 amps. I'm probably going to get a 48amp in the future if my box can take it.

 

[MetrowestZ]

Run the charger cable onto your roof to prevent ice dams. A two-fer ?

 

[Blue highway]

This is why I've turned down my EVSE to 24 amps... it can hit my charge target in my charge window (1AM to 7AM) and the heat goes way down. (I used to run it at 40A)

BTW great thread title

 

[Maquis]

Need to keep things in perspective. It only takes a couple of watts of dissipation the get a 10C rise. At 32A, your gross charge rate is 7200 watts. The efficiency of the charger in the car is around 90%, so about 720 watts lost there. The power loss of the cable is likely on the order of 0.1%.

 

[Shayne]

Lots a threads have mentioned losses in actual kWh delivered to the Mach-E via the Ford portable charger (and all EVSEs in fact), from things like heat.

In case you were skeptical, here's a bit of visual proof from charging the car last night. The cable was lying on the ice & snow covered driveway in -10c all night and still managed to melt through the ice. Pretty interesting.

Resistance is indeed futile...

Not too much chance of it over heating there. Ice cooled charging.

I find my HD black cable can sink in during the day in the sun; even when it is not drawing any power. New cable management on 6" hard packed

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