I have 25 years in Telecom system design and did circuit and software design early in my career. We designed Telecom systems that the old Bellcore, now Telcordia, Bell System specs which were second to military specs. I did detailed and rough cost estimates on many a system and PCB. I got a block diagram off an SAE based presentation and did a rough conservative cost estimate of the Level 2 EVSE.
Here is the Aerovironment Spec: http://evsolutions.avinc.com/uploads/pr ... 061110.pdf
This thing is NEMA 4 enclosure which is outdoor capable even though the majority will be mounted inside garages. To run conduit outdoors and use the pedestal will add a lot of cost but a typical garage is a 25 foot run of EMT conduit plus 3 #8 conductors and a #10 ground plus a new 40A breaker in your garage panel. I have a 100A panel in my garage and bought the EMT conduit and wire plus breaker for less than $100. It took me a few hours to run the conduit and wire and install the new breaker. I'm planning on having everything wired right to a box where my EVSE will be mounted. That way the install is trivial.
Here is my rough estimate based on the blocks in the diagram and my knowledge of roughly what they must do functionally.
These numbers are high except maybe that crazy J1772 coupler which is designed like a high end F16 Military connector. Right now it could be more as the volumes are low. But since all my other numbers are high, the estimate is probably +/- 20% and vendors will give good prices given Nissan has contracted for it and the DOE is funding everything.
The Round Enclosure $25
The SAE J1772 Coupler $50
5 conductor cable 25' (maximum offered) $25
A PCB and power supply $20
GFCI Circuit 30A $20
Pilot Monitor and Controller $15
LEDs and buttons $15
CPU, memory and upstream Comm Controller $25
Power Line Modem $25
Misc Hardware $10
These add up to the $200-$250 and is conservative
This range which is doubled for retail so if the market was competitive this thing should be less than $500
So it's interesting they want $2200 on average
$200-$300 in Electrician labor tops
$100 conduit and wire and breaker
$500 retail value (could be $250 if sold by Costco)
So that's $800-$900 tops...
Is it fair to charge the federal tax credit twice the real value... That's the tax payers and the guys who gave Nissan a $1.6B loan and another $100M to the EV Project launching them.
Doesn't sound right to me!