12 Ga. wire to 4 G..

[wantacoe]

I recently had my electrical cable moved from overhead to underground cable. I have a outdoor light that is at the top of the building. I don't have any way to get to the peak. When the original overhead was ran inside they hooked the light to the inside cable which i believe is 4 gauge. Can I hook my 12 Ga. romex to that 4 Gauge aluminum wire?

 

[alfredeneuman]

Can I hook my 12 Ga. romex to that 4 Gauge aluminum wire?

Romex (NM) is not allowed outside. UF cable is though.
Use insulated taps such as polaris taps or splicer reducers and either tape or shrink tube on the connections

 

[Terry D]

Are these connections and new wiring going to be inside or outside

 

[wyliesdiesels]

have a pic of the setup? why not rent a boom lift and do it proper?

 

[sberry]

What doesnt make sense with this?

 

[alfredeneuman]

What doesnt make sense with this?

The whole thing has to protected by a breaker that doesn't exceed 20 amps
A 20 amp breaker won't accept a #4 so he would have to splice it on both ends
A plus is that you won't have worry about voltage drop