I have a panel that is outside with a 110 receptacle attached directly to the panel. I want to add a two more receptacles to this circuit for a total of 3 receptacles. What I would need to do most likely is ether do a double tap on the breaker or have a splice in the panel. I am sure that double tapping is a violation of NEC. But what about splicing?

Thanks

I have a panel that is outside with a 110 receptacle attached directly to the panel. What is meant by mounted directly to the panel? Where do you plan to mount the additional receps?

Note: Most breakers are listed to accept a single conductor. But they do have some breakers that are listed to accept two conductors. Check your breaker listing. (NEC 110.3 B)

You can splice inside a panel, as long as you have adequate space: Spacing so that the conductors do not fill over 40% of the cross-sectional area of the space, and splices and taps do not fill more than 75% of any cross section (NEC 312.8). Yet, for your job, I see no reason why you would want to tap, or splice. Get back to us with your answers...