Charging from dryer plug

[Pbear16]

Just got a new tycoon. My garage has a three prong 240 volt dryer outlet. Am I correct that I can get an adapter to make it a four prong outlet and then plug in the 4 prong cord that the Porsche comes with to charge?

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[daveo4EV]

you only need a 3 prong outlet - either will work - it doesn't honestly matter - most/all EVSE (EV chargers) only use 3 conductors (2 hots + ground) - any 4 prong connect the 4th prong is electrical neutral which is unused in an EVSE - it's a dummy blade and not wired up.

but Porsche charges $220 for these cables - you can purchase an entire extra EV charger (EVSE) for what porsche charges for the power supply cable.

here is the dryer cable from porsche for your Porsche EVSE

https://www.suncoastparts.com/product/skuhybg2nema1430.html

the cable above is 14-30 cable - 30 amp modern dryer power supply cable - (4 prongs)

Porsche also makes a 6-30 cable - 30 amp pre-1994 dryer power supply cable (3 prongs) - but it's not listed by suncoast porsche parts

once you have one of the 30 amp cables - a $20 30 amp adapter from amazon will convert any plug you have to a 14-30

 

[daveo4EV]

here is the list of cables Porsche makes for their EV Charger (EVSE)

the EVSE comes standard with a NEMA 14-50 (240v 50 amp circuit) - and a NEMA 5-15 (household outlet)

the cables below are alternatives - 6-50 and 14-50 are equivlent to one another - both 50 amp circutis providing 9.6 kW charge rate

14-30 & 6-30 are both 30 amp power supply cables providing 5.76 kW charge rate

the cables are $0 substitution at vehicle order time - but a $220/$120 supply part post delivery.

you can purchase non-Porsche EVSE's that support other types of plugs (including 14-50, 14-30, 6-50, 6-30) and more that will also charge the Taycan - these other EVSE's start as low at $200 and will do the same thing the Porsche EVSE will do.

 

[daveo4EV]

in total for north america there are 5 possible power supply cables for the Porsche EVSE

NEMA 5-15 (household outlet - standard equipment - 1.44 kW charge rate)
NEMA 14-50 (standard equipment - 50 amps 9.6 kW charge rate)
NEMA 6-50 (options equipment - 50 amps 9.6 kW charge rate)
NEMA 14-30 (optional equipment - 30 amps 5.76 kW charge rate)
NEMA 6-30 (optional equipment - 30 amps 5.76 kW charge rate)

 

[daveo4EV]

if you want to estimate your charge time from 5% battery to full do the following math

(86 / [charge-rate]) * 1.1 = hours-to-charge to full

charge rate is listed above for each type of cable

so (86 / 9.6) * 1.1 = 9.8 hours (NEMA 14-50/6-50)
(86 / 1.44) * 1.1 = 65.7 hours (NEMA 5-15)

 

[daveo4EV]

Just got a new tycoon. My garage has a three prong 240 volt dryer outlet. Am I correct that I can get an adapter to make it a four prong outlet and then plug in the 4 prong cord that the Porsche comes with to charge?

https://www.taycanforum.com/forum/t...age…for-those-that-wish-to-over-do-it-….2343/
https://www.taycanforum.com/forum/t...and-useful-road-warrior-ev-charging-kit.6812/
https://www.taycanforum.com/forum/t...fing-neutering-the-pmcc-via-ota-update.12791/
https://www.taycanforum.com/forum/threads/extra-7pp-971-678-xx-power-cord-for-pmc.12745/#post-189338
https://rennlist.com/forums/taycan/1260596-school-me-on-home-charging.html

 

[daveo4EV]

Just got a new tycoon. My garage has a three prong 240 volt dryer outlet. Am I correct that I can get an adapter to make it a four prong outlet and then plug in the 4 prong cord that the Porsche comes with to charge?

technically you can get an adapter to convert a dryer plug to the 14-50 plug that comes with the Prosche charger, but

YOU SHOULD NOT DO THIS!!!​

the plug on the Porsche charger is for a 50 amp circuit
your dryer plug is a 30 amp circuit

if you get an adapter the Porsche EVSE (EV charger) will still think it can pull 50 amps (9.6 kW) and will overload your 30 amp circuit (5.76 kW) - if your breaker does not trip/pop then it will literally melt your wiring and potentially cause a fire

you should not plug in a 50 amp device (your porsche EVSE with a NEMA 14-50 supply cable) to a 30 amp circuit - use the proper supply cable that matches the plug.

you should get a proper 30 amp power supply cable from Porsche for your Porsche EVSE (porsche makes them) and then you can plug it into your 30 amp dryer outlet - see the above list of potential cables - or purchase an alternative 30 amp EVSE from a variety of EVSE vendors - they will all charge your Taycan.

the supply cables "tell" the Porsche EVSE how much power htey are allowed to use - the 30 amp supply cables adjust the load of the porsche EVSE to an appropriate amount for a 30 amp circuit

using a generic power adapter will NOT "tell" the Porsche charger to pull less power therefore leading to an overloaded circuit situation where the only safety is circuit breaker.

if you intend to use the Porsche EVSE with a 30 amp outlet you must obtain one of the Porsche factory 30 amp power supply cables like the one I listed from Suncoast parts.

 

[Pbear16]

technically you can get an adapter to convert a dryer plug to the 14-50 plug that comes with the Prosche charger, but

YOU SHOULD NOT DO THIS!!!​

the plug on the Porsche charger is for a 50 amp circuit
your dryer plug is a 30 amp circuit

if you get an adapter the Porsche EVSE (EV charger) will still think it can pull 50 amps (9.6 kW) and will overload your 30 amp circuit (5.76 kW) - if your breaker does not trip/pop then it will literally melt your wiring and potentially cause a fire

you should not plug in a 50 amp device (your porsche EVSE with a NEMA 14-50 supply cable) to a 30 amp circuit - use the proper supply cable that matches the plug.

you should get a proper 30 amp power supply cable from Porsche for your Porsche EVSE (porsche makes them) and then you can plug it into your 30 amp dryer outlet - see the above list of potential cables - or purchase an alternative 30 amp EVSE from a variety of EVSE vendors - they will all charge your Taycan.

the supply cables "tell" the Porsche EVSE how much power htey are allowed to use - the 30 amp supply cables adjust the load of the porsche EVSE to an appropriate amount for a 30 amp circuit

using a generic power adapter will NOT "tell" the Porsche charger to pull less power therefore leading to an overloaded circuit situation where the only safety is circuit breaker.

if you intend to use the Porsche EVSE with a 30 amp outlet you must obtain one of the Porsche factory 30 amp power supply cables like the one I listed from Suncoast parts.

Thanks. There is a 14-30 and a 6-30. Which do I get?

 

[daveo4EV]

Thanks. There is a 14-30 and a 6-30. Which do I get?

which ever one matches your plug. It doesn't matter - both are the same charge rate - 5.76 kW

the whole point of these plugs/supply cables is compatibility with existing plugs - the correct supply cable for anyone is the the cable that matches the plugs they intend to use at home or on the road.

here is a 6-30 plug

here is a 14-30 plug

 

[Pbear16]

which ever one matches your plug. It doesn't matter - both are the same charge rate - 5.76 kW

the whole point of these plugs/supply cables is compatibility with existing plugs - the correct supply cable for anyone is the the cable that matches the plugs they intend to use at home or on the road.

here is a 6-30 plug

here is a 14-30 plug

 

[Pbear16]

What adapter would I need?

 

[whitex]

in total for north america there are 5 possible power supply cables for the Porsche EVSE

NEMA 5-15 (household outlet - standard equipment - 1.44 kW charge rate)
NEMA 14-50 (standard equipment - 50 amps 9.6 kW charge rate)
NEMA 6-50 (options equipment - 50 amps 9.6 kW charge rate)
NEMA 14-30 (optional equipment - 30 amps 5.76 kW charge rate)
NEMA 6-30 (optional equipment - 30 amps 5.76 kW charge rate)

You may also encounter NEMA 14-50 on 30A or 40A circuits in North America. Never assume NEMA 14-50 means it's connected to a 50A breaker - ALWAYS CHECK THE BREAKER SIZE! A 30A circuit will just trip if your EVSE assumes it's a 50A circuit because it will try to draw 40A. Unfortunately, connecting a 40A EVSE to a NEMA 14-50 on a 40A breaker can lead to potential safety issues as it can draw 40A for hours, while it's only suppose to draw 32A on a 40A circuit. There have been fires caused by this, which was one reason Tesla switched to making 32A mobile chargers, rather than 40A chargers.

30A NEMA 14-50 is typical for dryers, and 40A NEMA 14-50 is typical for stoves/ovens.

 

[whitex]

What you have here is a NEMA 10-30. HOWEVEVER, PLEASE READ THROUGH BELOW BEFORE YOU CONNECT ANY EV TO THIS OUTLET:

Based on this picture alone, I feel I should list few concerns here:

1. What is the breaker value which controls this outlet?
2. Why are there 3 connections going to this outlet, where are they going? Typically there should only be one incoming connection from the breaker. 3 implies this circuit is shared feeding other loads, which means you will be sharing the current (power) with some other devices/outlets.
3. What used to be connected there?
4. This receptacle looks very "used" and possibly damaged (rust, etc), which may make it a safety hazard. If it was me I would change out the receptacle before using it for charging an EV of any kind. While at it, inspect the size of the cables to make sure they are able to carry the load. Very small cost compared to potentially burning down you home - if wiring is ok, switching out a plug should not cost you more than a $100 if you pay an electrician.

The answers to the above 1-3 will tell you what you can safely charge from this outlet, and/or if you need some additional load balancing equipment.

Let me make my advise very clear - Please do not charge any EV from this outlet until you have the circuit checked out by a qualified electrician and the outlet swapped out with a new one. Your best case scenario failure here is your car will not charge overnight, your worst case scenario is your house catches on fire. EVs can draw a lot of power, more than your entire house during most times of the day, so it's not something you should plug into just any old outlet you find in the garage.

When swapping the outlets, you can have whatever outlet/receptacle installed which will match your EVSE (charger), but if swapping it to NEMA 14-50 you have to pay attention however to the maximum current you can draw from the outlet (80% of the breaker Amps value) and make sure your EVSE (charger) is set to never exceed that. Ideally, if this is a 30A circuit (not shared by any other devices), get the outlet swapped to 6-30 or 14-30, this way if you get a 6-30 or 14-30 Porsche cable as @daveo4EV suggested, it will automatically tell the EVSE (charger) that the most current that can be used is 24A (which is 80% of 30A).

 

[daveo4EV]

What you have here is a NEMA 10-30. HOWEVEVER, PLEASE READ THROUGH BELOW BEFORE YOU CONNECT ANY EV TO THIS PLUG:

Based on this picture alone, I feel I should list few concerns here:

1. What is the breaker value which controls this outlet?
2. Why are there 3 connections going to this outlet, where are they going? Typically there should only be one incoming connection from the breaker. 3 implies this circuit is shared feeding other loads, which means you will be sharing the current (power) with some other devices/outlets.
3. What used to be connected there?
4. This receptacle looks very "used" and possibly damaged (rust, etc), which may make it a safety hazard. If it was me I would change out the receptacle before using it for charging an EV of any kind. While at it, inspect the size of the cables to make sure they are able to carry the load. Very small cost compared to potentially burning down you home - if wiring is ok, switching out a plug should not cost you more than a $100 if you pay an electrician.

The answers to the above 1-3 will tell you what you can safely charge from this outlet, and/or if you need some additional load balancing equipment.

Let me make my advise very clear - Please do not charge any EV from this outlet until you have the circuit checked out by a qualified electrician and the outlet swapped out with a new one. Your best case scenario failure here is your car will not charge overnight, your worst case scenario is your house catches on fire. EV's draw a lot of power, more than your entire house during most times of the day, so it's not something you should plug into just any old outlet you find in the garage.

When swapping the outlets, you can have whatever outlet/receptacle installed which will match your EVSE (charger), but if swapping it to NEMA 14-50 you have to pay attention however to the maximum current you can draw from the outlet (80% of the breaker Amps value) and make sure your EVSE (charger) is set to never exceed that. Ideally, if this is a 30A circuit (not shared by any other devices), get the outlet swapped to 6-30 or 14-30, this way if you get a 6-30 or 14-30 Porsche cable as @daveo4EV suggested, it will automatically tell the EVSE (charger) that the most current that can be used is 24A (which is 80% of 30A).

this +1000

 

[tbinmd]

What adapter would I need?

This is the adapter I used. https://www.amazon.com/gp/product/B086SSNKJP/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Need to set the Porsche charger to 50% load. I was using the base charger included with the car.

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