Update: I am trying to determine if it's ok to run UF-B from the meter panel and tie in to the Romex underneath the addition and tying them together with wire nuts inside a junction box. (This is to eliminate the underground Romex to the service panel which is totally within a wet location).

There are two yellow Romex cables (14/2 I believe) which are going from the main panel box outside to the underside of the addition built on to the mobile home. I believe one is for the 4 ceiling fans, and the other is for the main room outlets (6 in total).

Can I run 12/2 UF-B from the main panel breaker to somewhere under the addition and tie the UF and Romex together (with wire nuts) within a junction box? The UF-B will be underground and the Romex will be attached to the floor joists before going in to the junction box.

Thank you

I am trying to determine if it's ok to run UF-B from the meter panel and tie in to the NM-B cable underneath the addition and tying them together with wire nuts inside a junction box. (This is to eliminate the underground NM-B to the service panel which is totally within a wet location).

There are two yellow NM cables (14/2 I believe) which are going from the main panel box outside to the underside of the addition built on to the mobile home. I believe one is for the 4 ceiling fans, and the other is for the main room outlets (6 in total).

Can I run 12/2 UF-B from the main panel breaker to somewhere under the addition and tie the UF and Romex together (with wire nuts) within a junction box? The UF-B will be underground and the Romex will be attached to the floor joists before going in to the junction box.

Thank you

There are two yellow Romex cables (14/2 I believe) which are going from the main panel box outside to the underside of the addition built on to the mobile home. I believe one is for the 4 ceiling fans, and the other is for the main room outlets (6 in total).

Can I run 12/2 UF-B from the main panel breaker to somewhere under the addition and tie the UF and Romex together (with wire nuts) within a junction box? The UF-B will be underground and the Romex will be attached to the floor joists before going in to the junction box.

Thank you

Update: I am trying to determine if it's ok to run UF-B from the meter panel and tie in to the Romex underneath the addition and tying them together with wire nuts inside a junction box. (This is to eliminate the underground Romex to the service panel which is totally within a wet location).

There are two yellow Romex cables (14/2 I believe) which are going from the main panel box outside to the underside of the addition built on to the mobile home. I believe one is for the 4 ceiling fans, and the other is for the main room outlets (6 in total).

Can I run 12/2 UF-B from the main panel breaker to somewhere under the addition and tie the UF and Romex together (with wire nuts) within a junction box? The UF-B will be underground and the Romex will be attached to the floor joists before going in to the junction box.

Thank you