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Wellcraft19 t1_j2cfwk8 wrote

That - as well as it signals to the car mounted charger how much current it can pull. An EVSE might be connected to a 30A circuit (and can handle 100A) but the onboard charger can pull a full 80A. If it did, it’d trip the supplying breaker, so the EVSE is signaling to the onboard charger (AC/DC converter, a rectifier) how much current that is ‘available’. Only side effect is longer charge times, which rarely is an issue in a home location.

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SmashScrapeFlip t1_j2cgd7r wrote

there is no code directly related to installation of an EVSE outside of specific states like California that has the Title 24 code. That's coming with the IECC 2024. Only relevant code would be related to the furnace or the electrical panel.

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