Slow L2 Charging on Emporia EVSE

[redpoint5]

I've been snaking the charging cord out from the 30A dryer outlet in the washroom to charge the Tesla, and earlier today it was charging at the 24A limit I set. After plugging in again, it's limiting itself to 5kW. I'm using an Emporia 60A EVSE with a NEMA 14-50 to NEMA 14-30 adaptor. Any ideas? I've already tried the usual reseat all the connections and restart everything approach.

This is just temporary until I can fish the 6 awg wire from the attic to electrical panel.

 

[jjrandorin]

What am i missing here? Isnt roughly 5kW / kWh the appropriate charging speed for 24 amps? Tesla's wall connector charging speed chart shows a 30 amp circuit = 24 amp charging (like you show there and acknowledge) and that being 5.7kW of power at 240v.

 

[ewoodrick]

24A * 240V = 5760W.

It appears to me to be working perfectly.

80% of 30A = 24A max for 30A dryer circuit.

What are you expecting?

 

[Big Earl]

24 amps * 236 volts = 5,664 Watts, or just a bit over 5 kW.

The car rounds this to the nearest thousand for display in the app. I’m a little surprised that it didn’t round up to 6 kW. Regardless, what you’re experiencing is perfectly normal for a 30-amp dryer circuit.

 

[redpoint5]

Yep, I was confused with the amps and watts. Charging near normal it seems.