daveo4EV
Well-Known Member
- First Name
- David
- Joined
- Jan 28, 2019
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- Location
- Santa Cruz
- Vehicles
- Cayenne Hybrid, 911(s) GT3/Convertable
NOTE: North American Level-2 (L2 - 240 volt) EVSE’s only use 3 wires - HOT/HOT/Ground - the forth blade slot in the NEMA 14-50 is electrical neutral/common which is unused by any Level-2 (240 volt) North American EVSE (including the PMCC - this can be confirmed with a visutal inspection of both end of the 14-50 PMCC supply cable - you will see there are only 3 wires actually used in the PMCC end of the supply cable - the 4th wire neutral from the 14-50 plug isn’t even wired up with any electrical conductor in the porsche supply cable) - an alternate setup looking toward the hardwired EVSE future is a high quality NEMA 6-50 plug (3 plug blades) - and then you’d need either the NEMA 6-50 supply cable from Porsche (too much money) or a 6-50 to 14-50 adapter from Amazon - but that means you’d only pull 3 wires (saves some money on wire cost) from the beaker to the plug and that’s the exact number of wires you’ll need to hard wire any 60 amp EVSE (like the clipper creek) - if you install a NEMA 14-50 you should wire up the neutral since that’s spec/code for NEMA 14-50 and is electrically necessary for any NEMA 14-50 device other than an L2 EVSE - but that wire is un-necessary/unused for an EVSE and will be unused in the future if you ever swap to 60 amp charger - no big deal honestly - but if you plan to move to a hard wired EVSE no need for the 4th wire and it‘s super easy/affordable to adapt a 6-50 to 14-50.if you are having the 60 amp breaker "installed" at the office- do the following:
1. install a 60 breaker
2. instruct electrician to install/pull/spec at least 60 amp wire
3. install a Hubble Industries NEMA 14-50 plug
this will future proof your install - such that when you upgrade to a ClipperCreek HCS 60 in the future it's a trivial swap to just remove the NEMA 14-50 plug and hard wire the ClipperCreek to the existing wiring inside the plug-box - no new breaker, no new wire - should take less than 2 hours - even maybe less than an hour.
60 amp breaker is the maximum power a standard Taycan can charge at - 48 amps charge rate off a 60 amp breaker is about 11.8 kW charge rate.
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