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Thread: 61851-1 compatibility question

  1. #11
    Model S R231 EU widodh's Avatar
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    Quote Originally Posted by AndrewBissell View Post
    If EVSEs do this then they are breaking the standard. They become useless for most current EVs.
    True, but it might be reality.

    EV-Box told me (like I mentioned) that they install a C16 AND C32 fuse in a 32A EVSE, since technically the possibility exists that due to a malfunction somewhere the EV starts drawing 32A over a 16A cable without tripping a fuse. That could lead to dangerous situations.

    It is however to bad, since an EVSE can increment from 16A to 32A in steps of 4(?) Amps.

  2. #12
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    Quote Originally Posted by AndrewBissell View Post
    They become useless for most current EVs.
    agreed... it makes no sense to me

  3. #13
    Senior Member dpeilow's Avatar
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    Maybe changing the pilot signal on the fly is too complex for these poor vendors...

    Care to name and shame?


    Bottom line is that buying a 16A cable seem to be a false economy. I had that opinion anyway.

  4. #14
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    Quote Originally Posted by widodh View Post
    EV-Box told me (like I mentioned) that they install a C16 AND C32 fuse in a 32A EVSE, since technically the possibility exists that due to a malfunction somewhere the EV starts drawing 32A over a 16A cable without tripping a fuse.
    What's interesting about this is that IEC 61851-1{ed2.0} has four resistor codings for 13A, 20A, 32A, and 63A (3 Phase)/70A (1 Phase) which implies that a 16A cable would be protected by a 16A fuse but would only charge at 13A....

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