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Does anyone know what this outlet is?

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It only says 4-30 on it can’t find the nema. Would it be a 14-30?
 

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NEMA L14-30P. L = twist lock, P = plug, 14 = with neutral and ground, 30 = 30 amps.

Your picture shows a male end (P for plug), which would typically be a power input like what you'd use to connect a generator to a house. The circuit breaker for this receptacle likely has a transfer switch lock-out bar on it so that it can't be energized when the panel main is energized. This won't do you any good for car charging.

To charge an EV, you need a female receptacle (R) that's connected to the circuit breaker panel in the typical fashion (not configured for a generator power input).
 
Is there a solution for this? I bought a Tesla charger but was hoping to save 400 dollars

What you have is a picture of a plug outlet and not receptacle, you need receptacle. So then:

  1. Replace that outlet with a standard 14-30R receptacle. You need a commerical grade version which should run your about $50
  2. Make sure the breaker is a GFCI breaker, if not that will run you $100-$150
  3. Buy the Tesla adapter from Tesla for about $45
  4. You will need a cable management system of some sort, Tesla has one for $30 I believe
Assuming you have the mobile connector, this will run you $225+. And if you don’t add another $200 to buy one. If you have to buy the mobile connector then go with the Wall Connector which is $400 + $10 for a new breaker, if needed.