Surge protection for Level 2 EVSE

Discussion in 'General' started by dBdt, Nov 9, 2021.

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  1. dBdt

    dBdt Member

    If there are power surges / spikes when an EV is charging on a level 2 EVSE at a residence, is the EV at any risk? Would a protector like the Siemens FS140, mounted at the panel, provide any protection? Would it provide adequate protection? For me, the context is the US electrical system.
     
    pigrew likes this.
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  3. Puppethead

    Puppethead Well-Known Member

    The vehicle should be fine, the whole point of the EVSE is to provide a stable flow of electricity.

    I had a power outage while my car was plugged in but not inside the charge window. Unbeknownst to me the EVSE (Grizzl-E classic) didn't restart properly when power returned, so my vehicle didn't charge. Resetting the circuit breaker restored the EVSE to normal and my EV was unaffected. The lesson I learned is to check on charge status after a power outage.
     
  4. dBdt

    dBdt Member

    Thanks, but the question is really about voltage spikes / power irregularities rather than about outages. So, it is about damaging power conditions rather than availability.
     

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