New 50 amp RV service


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Old 05-15-24, 06:34 PM
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New 50 amp RV service

I will be installing 50 amp service to a rv receptacle about 75 feet from the service pole shown in the photo. The rv service will be buried in ground in conduit. My question is the service pole has two 200 amp breakers. One will be for a future home and the other breaker for a future shop. I just need to install the rv service now and it will be temporary until the home and shop is built in the near future. I am needing advice on how this should be done.

 
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Old 05-16-24, 04:31 PM
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Install a weatherproof breaker box with a 50 amp double (250 volt) breaker set just below the panel box on the pole you have pictured. This breaker should be single toggled or have two toggles tied together.

Connect one of the breakers in the meter panel to this small breaker box with 6 gauge conductors for two hots and neutral, and10 gauge equipment grounding conductor. You can use 6-3 UF Romex cable to the RV location with 50 amp receptacle, the cable buried at least 24 inches deep.
 
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Old 05-17-24, 05:36 AM
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Better, a (weatherproof) 200 amp subpanel under the meter panel, With at least 4 slots, two for the 50 amp feed to the RV and two for the future 200 amp feed to the shop. Use 2/O wire (#6 for ground) for the feed from the meter panel.
 
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Old 05-17-24, 11:17 AM
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Thank you very much for your advice.
 
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Old 05-17-24, 05:06 PM
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You can feed a sub panel with a smaller rating than 200 amps off the 200 amp breaker using the NEC tap rule 240.21(B)(2). The tap conductors' ampacity cannot be less than 1/3 of the overcurrent device (They would need to be at least #6 THHN copper) and the wires would need to terminate into a fuse or circuit breaker that would limit the current on the tap conductors. (up to 60 amps)
 
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Old 05-20-24, 03:29 AM
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Thank you for your advice and I will consider this too.
 
 

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