I purchased wooded undeveloped property and there is a box mounted on a pole with 200 amp service. The person before me tapped in to the box for his RV with 10-2 wire with the hot going directly to the lug coming off the main breakers. The neutral is also wired to a lug and the ground goes to a bus bar. There hot wire is not going to a 30 amp circuit breaker (for the RV). I believe I need to add a 30 amp breaker. Also I would like to add an outdoor outlet (110 v) from the box and would therefore need to add another 15 amp breaker. Is that correct?

I purchased a small bus bar from Home Depot. If I remove the Neutral lug, does this just screw in?

It looks as though if I flip the breaker bar off, everything below the breakers should not have current.

I appreciate the assistance and help from this more knowledgeable community.

  • 3
    Welcome to Home Improvement! Can you post a picture of your panel and meter? And provide a link to the bus bar you purchase from HD?
    – mmathis
    Commented Aug 29, 2018 at 21:16
  • Yes, can you post the make and model of the breaker box involved, as well as photos of its interior? Commented Aug 29, 2018 at 23:32
  • Warning: If you are not completely sure how to cut power to what you are working on, then you really shouldn't be working with electricity. Hire an electrician, or ask a friend who knows what they are doing help you.
    – virtualxtc
    Commented Aug 30, 2018 at 1:04
  • I recently asked about a similar situation. The photos and responses may be helpful.
    – isherwood
    Commented Oct 4, 2018 at 15:08

1 Answer 1


Yes, you'll want a 30A breaker just to protect the RV.

Breakers protect wires. In the case of an RV, the internal wiring system is built to withstand onboard loads demanding 30A. But if an onboard load has a problem, or if the wiring has a problem, and it suddenly starts pulling 100A, the RV depends on that external breaker to trip. Otherwise you could have an RV fire.

Even if the RV has a little subpanel on board, most likely the subpanel is "oversubscribed" and it'd be possible for all circuits to run at max, trip no RV breakers and pull considerably more through the internal wiring between the panel and the shore power connection.

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