Can I install high quality 14-50 here?

[shelnian]

I live in the kind of part of town that gets $300+ EV chargers stollen.

Here is some material Outlet, box, and cover that may work for you. Can use existing wire and conduit.

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[Jtbuster]

QUOTE="Jtbuster, post: 753378, member: 12136"]
Quote:


“The code is very clear that you cannot install an evse that pulls 48 amps on 6-2. The issue is that that clarity requires looking at several different places in the code book and understanding the difference between maximum over current device and minimum circuit ampacity.





An EVSE is considered a continuous load.



NEC Article 100 defines continuous loads as loads that are expected to run continuously for 3hrs or more .



The minimum circuit ampacity (amount of current wire has to be rated for) is 125 percent of the continuous load, in this case 48*1.25= 60amps



NEC 210.19(A)(1) code reference for that.





Romex cable can only be used at the 60 degree c rating on the NEC ampacity tables.



NEC article 334.80 code reference for that.





Then, we need to look at the NEC ampacity tables. At 60c, #6 (6/2NM cable) is only rated for 55 amps. Commonly, people misapply the round up rule that allows you to round up the over current device (breaker) past the MOCP calculation to the next standard breaker size, which for 55 amps could be 60. However, we are calculating minimum circuit ampacity, not maximum over current protection, so the round up rule does not come to play.



So our options are to use 4/2NM which is rated at 70amps @ 60c (which is impossible to find) or to use #6thhn, which can be rated at 75c as long as the breaker and evse terminals are also rated at 75c (most are) which is rated at 65 amps.



NEC 310.16 reference for that.”

 

[Mr Breeze]

I mount my evse inside and use a two gang weather proof cover on the outside to pass the j1772 through.
https://www.lowes.com/pd/TayMac-2G-WP-Extra-Duty-55IN1-In-Use-CVR-5-DP-CLR/5002000899

Cool setup, smart

 

[Space_Pony]

QUOTE="Jtbuster, post: 753378, member: 12136"]
Quote:


“The code is very clear that you cannot install an evse that pulls 48 amps on 6-2. The issue is that that clarity requires looking at several different places in the code book and understanding the difference between maximum over current device and minimum circuit ampacity.





An EVSE is considered a continuous load.



NEC Article 100 defines continuous loads as loads that are expected to run continuously for 3hrs or more .



The minimum circuit ampacity (amount of current wire has to be rated for) is 125 percent of the continuous load, in this case 48*1.25= 60amps



NEC 210.19(A)(1) code reference for that.





Romex cable can only be used at the 60 degree c rating on the NEC ampacity tables.



NEC article 334.80 code reference for that.





Then, we need to look at the NEC ampacity tables. At 60c, #6 (6/2NM cable) is only rated for 55 amps. Commonly, people misapply the round up rule that allows you to round up the over current device (breaker) past the MOCP calculation to the next standard breaker size, which for 55 amps could be 60. However, we are calculating minimum circuit ampacity, not maximum over current protection, so the round up rule does not come to play.



So our options are to use 4/2NM which is rated at 70amps @ 60c (which is impossible to find) or to use #6thhn, which can be rated at 75c as long as the breaker and evse terminals are also rated at 75c (most are) which is rated at 65 amps.



NEC 310.16 reference for that.”

Don't use Romex. The temperature rating for THHN #6 wire is 90°C . THHN #6 wire can handle up to 75 amps.

 

[Maquis]

QUOTE="Jtbuster, post: 753378, member: 12136"]
Quote:


“The code is very clear that you cannot install an evse that pulls 48 amps on 6-2. The issue is that that clarity requires looking at several different places in the code book and understanding the difference between maximum over current device and minimum circuit ampacity.





An EVSE is considered a continuous load.



NEC Article 100 defines continuous loads as loads that are expected to run continuously for 3hrs or more .



The minimum circuit ampacity (amount of current wire has to be rated for) is 125 percent of the continuous load, in this case 48*1.25= 60amps



NEC 210.19(A)(1) code reference for that.





Romex cable can only be used at the 60 degree c rating on the NEC ampacity tables.



NEC article 334.80 code reference for that.





Then, we need to look at the NEC ampacity tables. At 60c, #6 (6/2NM cable) is only rated for 55 amps. Commonly, people misapply the round up rule that allows you to round up the over current device (breaker) past the MOCP calculation to the next standard breaker size, which for 55 amps could be 60. However, we are calculating minimum circuit ampacity, not maximum over current protection, so the round up rule does not come to play.



So our options are to use 4/2NM which is rated at 70amps @ 60c (which is impossible to find) or to use #6thhn, which can be rated at 75c as long as the breaker and evse terminals are also rated at 75c (most are) which is rated at 65 amps.



NEC 310.16 reference for that.”

If you don’t want to tun conduit, #6 SER or MC cable is permitted for a 60A circuit.

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