smkettner wrote:The Utility is willing to pull three phase service to a business because they have a large motor(s) running 10 to 24 hours a day and they can make money. If three phase is pulled to a QC station the utility will sell what maybe an hour a week of electricity? No money, no wire, no transformers. Now if the project pays for the connection it probably would go. Could also run into additional improvements needed upstream to meet the demand while in use. The real beauty is charging at night when the system is under utilized and that advantage does not apply to QC.
edatoakrun wrote:Yes, I already read this article, but was still unsure if, as your earlier comment suggests, 3 phase power is uniformly transmitted to residential (and other) transformers.
Is this correct?
edatoakrun wrote:If So, the Nissan Salesman was apparently misinformed when he told me that 3 phase power was unavailable on the Redding street where Crown Nissan is located. And the installation of DC Chargers would seem to be possible virtually anywhere there is a power line, so long as 3 phase service is requested from the utility, and paid for by the customer.
Is this also correct?
DarkStar wrote:Nissan's DC Quick Charger appears to require three-phase power, so yes you could install a DC Quick Charger wherever three-phase power is available. However, a DC Quick Charger does not necessarily need three-phase power.
edatoakrun wrote:DarkStar wrote:Nissan's DC Quick Charger appears to require three-phase power, so yes you could install a DC Quick Charger wherever three-phase power is available. However, a DC Quick Charger does not necessarily need three-phase power.
Which brings me back to my question posted this morning:
At my local Nissan dealer, in Redding Ca, I was told a DC charger installation there was impossible (2 L2 chargers are 24 hour accessible) because Redding Electric Utility could or would not provide 3 phase service. But I have read on other threads that 3 phase is not neccessary for DC charger installations.
Would members with a greater understanding of the US grid design, commercial service standards, and DC charger design, please explain power requirements and just how difficult it is to locate DC charge stations?
To restate the same question, are there already sufficient locations (every 50 miles along interstate highways) in the US where DC chargers (3 phase or otherwise) can be located, with sufficient electrical infrastructure already in place, so that total installation costs are in the order of (only) tens of thousands of dollars for each DC charger?
DarkStar wrote:However, a DC Quick Charger does not necessarily need three-phase power.
Rake wrote:...The answer is yes, absolutely. However not in your home...
smkettner wrote:DarkStar wrote:However, a DC Quick Charger does not necessarily need three-phase power.
And there are single phase to three phase converters. Basically a single phase motor and three phase generator in a single housing. Service station had one 30 years ago to run the wheel balancer. This may not be practical for a full power QC.
jimcmorr wrote:So it would seem that it would be possible to have a DC charge station on a single phase supply, though perhaps taking a little longer than 20 to 30 minutes to charge