Extension cord

[Jefla]

I charge on 110 outlet about 20 feet from car, in parking garage with this extension cord. It has to snake along the garage wall to reach outlet and not be in way of neighbors.

No issues in 8 months of usage.

50 Foot Lighted Outdoor Extension Cord - 10/3 SJTW Yellow 10 Gauge Extension Cable with 3 Prong Grounded Plug for Safety - Great for Garden and Major Appliances https://www.amazon.com/dp/B078KDZBBX/ref=cm_sw_r_other_apa_i_PD9dEbYWC9R3M

 

[eevee-fan]

Also consider these as then you would have an extension cord that 1) works regardless of wall receptacle and voltage and 2) let you keep the portable EVSE closer to the wall receptacle (inside garage, under car port).

Amazon.com: j1772 extension cord

Oops, just realized this was for a Tesla, so this is useful if you have a J-1772 portable or wall EVSE...

 

[Petrlol]

I charge on 110 outlet about 20 feet from car, in parking garage with this extension cord. It has to snake along the garage wall to reach outlet and not be in way of neighbors.

No issues in 8 months of usage.

50 Foot Lighted Outdoor Extension Cord - 10/3 SJTW Yellow 10 Gauge Extension Cable with 3 Prong Grounded Plug for Safety - Great for Garden and Major Appliances https://www.amazon.com/dp/B078KDZBBX/ref=cm_sw_r_other_apa_i_PD9dEbYWC9R3M

I have the same one. Only used it twice on separate vacations, but it's been rock solid. Stays completely cold.

 

[jrose1g]

I used this 50' cord https://www.amazon.com/gp/product/B01DDV89UK/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1. Contrary to all information I've seen I have consistently 6 mph charge rate.

 

[CharleyBC]

I used this 50' cord https://www.amazon.com/gp/product/B01DDV89UK/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1. Contrary to all information I've seen I have consistently 6 mph charge rate.

I would guess your voltage is a bit above the typical 117-120.

 

[brucet999]

I would guess your voltage is a bit above the typical 117-120.

15A at 120V = 1.8kW. Divided by 253Wh/mile = 7.11 miles. A 6mph charging rate would work out to about 84% efficiency of charger, so it seems plausible to me. Even 117V would work out to 1.75kW, so would still easily display 6mph rate.

 

[CharleyBC]

15A at 120V = 1.8kW. Divided by 253Wh/mile = 7.11 miles. A 6mph charging rate would work out to about 84% efficiency of charger, so it seems plausible to me. Even 117V would work out to 1.75kW, so would still easily display 6mph rate.

All true. I confess I made the assumption that jrose1g was charging using the included 5-15 adapter, which should limit to a 12A sustained draw.

 

[brucet999]

All true. I confess I made the assumption that jrose1g was charging using the included 5-15 adapter, which should limit to a 12A sustained draw.

No, you are right and I was wrong. I neglected to allow for the 80% reduction.

His extension cord as pictured could only connect to a NEMA 5-15 Tesla adapter, so it should pull only 12A 120V. Assuming 90% charger efficiency, that would only be 1.44kW charge rate = 5 mph at 253Wh per mile. The extension cord would need to be equipped with a 5-20 terminal on its female end so he could plug a Tesla 5-20 adapter into it in order to get 15A 120V to the charger.