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Discussion Starter · #1 ·
So a lot of people have an older home with a small service (60A-120A) which typically means that you have to piggy-back onto an existing circuit, like your dryer or oven. So you buy something like a Dryer Buddy (Dryer Buddy Plus AUTO) or something similar to take care of the issue of tripping your breaker. But now your car doesn't charge if your dryer is on.

Question: Would anyone be interested in a device that regulates the car charging level so that it's always charging some amount, even if your appliance is on?

So if your dryer current draw is like 15A on a 30A circuit, your car can still charge the remaining 8-10A or so. You could hook up a current clamp to the dryer and talk to EVSE to regulate the power draw.

Thoughts?
 

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Discussion Starter · #3 ·
The idea would be to regulate the current down to below the 30amp circuit breaker. The ev charger would be able to monitor and regulate the current. Would this be something valuable? The car would be charging slower though when say your dryer is running...
 

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Your question seems to be US focussed, but in the EU some chargers (EVSE technically) already offer this with features like Grid/Group limit in the Zappi.
 

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2021 BMW iX3 Premier Pro / 2018 BMW 225 M Sport ProXE
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Remember guys, in the US, 120v is the common standard, but most houses have a 240v supply for driers, but its on a 30a circuit, so this is specific to usa, tesla's granny in the USA isn't even 3.6kw unless on the drier plug. Gotta feel for our friends over the pond 😉

@op here in the UK most people have 240v 100amp (or have it upgraded to 100amp) main fuse, and then the chargers are run on a dedicated circuit in the main distro unit (some mounted boxes use load balancing by monitoring the ring main). If we use our granny charger, we just tend to plug them into the wall and charge at 3kw+ as our standard circuits tend to be 20a.
 
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