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We have a level 2 charger at home, but we're not sure what weather conditions the charger that came with the car can tolerate. We'd like to be able use a standard outdoor 110 V receptacle when we aren't at home in New England weather conditions.
 

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I'd be more concerned about someone stealing it or vandalizing it. The other concern would be the condition of the outdoor outlet you're plugging into. The obvious advantage of the VOLT, of course, is not having to be dependent on the inconvenience of remote charging.
 

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We have a level 2 charger at home, but we're not sure what weather conditions the charger that came with the car can tolerate. We'd like to be able use a standard outdoor 110 V receptacle when we aren't at home in New England weather conditions.
The EVSE housing should be rated for at least NEMA Level 3 (wet conditions) or NEMA Level 4 (capable of withstanding sprayed water). The part that is not going to be all-weather rated is the NEMA 5-15R (receptacle) and NEMA 5-15P (plug.) For the plug and receptacle you will need to use a weather rated housing that can keep the rain, snow and ice off out the plug/receptacle junction.

So there is no problem with the EVSE housing being placed on the wet ground but in reality the power plug end of the EVSE is so short that this will not be an issue unless you are using an extension cord. The use of extension cords with the OE EVSE, while not recommended by GM, can be used provided you use a quality cord of sufficient wire gauge, only as long a cord as needed. On Amazon, for example, you can find weatherproof junction boxes that will encase the connection of the extension cord and the EVSE plug.
 
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