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I have a Freeze date this Friday on a RWD Taycan. I need to make a decision to order or cancel. My county has denied my application to add a Level 2 outlet to my garage. So, is there anyone here charging their Taycan on a Level 1? Does it really take 3 or more days to charge the car? Would you buy any EV if you only had a Level 1 outlet?
Wow, I didn't know anyone can forbid you to install a L2 outlet in your own home. Based on what I've read, a L1 can output between 1.3 and 2.4 kW. You divide that into the usable capacity of your battery (~ 84 kWh for the pp battery), it can take up to 64 hours to charge to full. It depends on how many miles you need to drive each day to see if it's adequate for you. For me, I'd stick with a petro car or move.
I have a Freeze date this Friday on a RWD Taycan. I need to make a decision to order or cancel. My county has denied my application to add a Level 2 outlet to my garage. So, is there anyone here charging their Taycan on a Level 1? Does it really take 3 or more days to charge the car? Would you buy any EV if you only had a Level 1 outlet?
That's crazy. By the county denying your application, do you mean you could not get an electrical permit, or that you couldn't upgrade the main electrical service (e.g. from 100A to 200A)?
I had to do a Load calculation on the house. I have a 200A service now. I'm allowed to use 80% of the 200A. Adding a 14-50 outlet exceeded the 80%. I was denied a permit. I can upgrade my 200A to 400A but the electric company would have to dig a new line from the street. They are coming out to give me a quote. But I was told to expect a cost in the thousands of dollars depending on how far they have to run the line.
I had to do a Load calculation on the house. I have a 200A service now. I'm allowed to use 80% of the 200A. Adding a 14-50 outlet exceeded the 80%. I was denied a permit. I can upgrade my 200A to 400A but the electric company would have to dig a new line from the street. They are coming out to give me a quote. But I was told to expect a cost in the thousands of dollars depending on how far they have to run the line.
That's crazy that a 200amp service isn't enough to support an extra 50 amp circuit. Re-submit and request a 40 amp outlet. If that gets rejected, try a 30 amp. Even with a 30 amp outlet running at 24 amps you could charge your car from 10 to 80% in a few hours.
Do you have an electric drier? There is a Split-volt box that you could use to share off of your drier plug. Do you have an electric oven? You could change to gas.
Another option would be to use a smart controller that would load balance in your house (like the Porsche home controller) depending on load. That should allow the engineer doing the load calculation to make it work without overloading your main.
That's crazy that a 200amp service isn't enough to support an extra 50 amp circuit. Re-submit and request a 40 amp outlet. If that gets rejected, try a 30 amp. Even with a 30 amp outlet running at 24 amps you could charge your car from 10 to 80% in a few hours.
Do you have an electric drier? There is a Split-volt box that you could use to share off of your drier plug. Do you have an electric oven? You could change to gas.
Another option would be to use a smart controller that would load balance in your house (like the Porsche home controller) depending on load. That should allow the engineer doing the load calculation to make it work without overloading your main.
I agree with @Loess . Try getting either a 40- or 30 amp 240V circuit approved. For the load calc, remember that you'd generally be charging late at night/early AM. So daytime/evening loads, like cooking, AC, and clothes drying, might not be relevant.
Some people who don't drive many miles get along ok with a 120V connection. But only expect about 3 miles/hour. And winter time preconditioning would suck all that up and more.
Wow, I didn't know anyone can forbid you to install a L2 outlet in your own home. Based on what I've read, a L1 can output between 1.3 and 2.4 kW. You divide that into the usable capacity of your battery (~ 84 kWh for the pp battery), it can take up to 64 hours to charge to full. It depends on how many miles you need to drive each day to see if it's adequate for you. For me, I'd stick with a petro car or move.
Three common 120V receptacles are:
NEMA 5-15 - the 15 amp receptacles we are all familiar with. Continuous power is 12 amps x 120 V = 1.44 kW
NEMA 5-20 - the 20 amp version of the 5-15. Continuous power up to 16 amps x 120 V = 1.92 kW
TT-30 - "Travel Trailer" 30 amp common in the RV community. Continuous power up to 24 amps x 120 V = 2.88 kW
It isn't real common to find (non-Tesla) EVSEs that take full advantage of 5-20 and TT-30 receptacles. And the on-board chargers in many (non-Tesla) EVs often restrict 120V charging to 12 amps max in any event. I think @daveo4porsche did some testing with 5-20 and TT-30 on his Taycan using the Tesla UMC and appropriate adapters for it, and was successful at using the higher currents.
I have a Freeze date this Friday on a RWD Taycan. I need to make a decision to order or cancel. My county has denied my application to add a Level 2 outlet to my garage. So, is there anyone here charging their Taycan on a Level 1? Does it really take 3 or more days to charge the car? Would you buy any EV if you only had a Level 1 outlet?
Yeah good luck with that, you'll be charging at a rate of approx 4 miles range/hr charged on a 120v outlet.
get a L2 circuit - have another electrician come out - target a 20 amp circuit if necessary - the Porsche Wall Charger can be configured to support most ANY breaker size - so you should be able to hardwire a Porsche Wall charger and then configure it for a 20/30/40/50 amp circuit.
here is table that I whipped up that will approximate charging time in hours to charge your taycan from 5% battery to “full” - there are two columns - the first column is charge time at 120 volts, the 2nd column is charge time at 240 volts - each row is a different breaker size…(I’ve factored in the 20% reduction you must take off the breaker size for EVSE charging rate) - so this table shows you charge time for each breaker size at 120 & 240 volts
battery size was estimated at 84 kWh (the usable size of Taycan’s 93 kWh battery)
calculations are from 5% to 100% - now you mostly will charge to 85% - and daily usage should be far far far less than 95% - so this table is “worse” case scenarios for charging…
columns 3 & 4 are charge times in hours - you’ll need to “add” a 10% overhead because these numbers are pure and do not represent real world with charging overhead - you get the idea - a 95% charge on a taycan @ 120V @ 15 amp breaker (normal household circuit) is 56 hours _BEST_ case probably more like 65 hour once it’s all said and done…
Last edited by daveo4porsche; 12-15-2021 at 10:50 AM.
Power Wall Charger - https://shop.porsche.com/us/en/porsc...%24B-HCHH0LAA/
Custom “hardwired” circuit at maximum breaker size you can afford
Install the Porsche Wall charger and configure it to match the breaker size (it has multiple settings for various breaker sizes - so really it can support _ANY_ charging capacity and has no fixed capacity)
the table above indicates clearly the advantage of 240V vs. 120V and even bumping from 20 to 30 makes a difference in over all charging times.
12-14-2021, 02:05 PM
Level 1 Charging ONLY. Yes or No?
