That's fine, and if the circuit wasn't GFCI protected, you'd use a GFCI
outlet with a "rain tight while in use" cover



"Mook Johnson" wrote in message
...
I'd like to add an exterior outlet for some landscape lighting.

Is it against code to "T" off of an existing electrical outlet that is
already on a GCFI breaker and put a surface mount exterior box on the
outside of the home?

All I'd have to do is drill a hole through the siding and for the wire to
pass then seal it up behind the box with silicone. The outside box will
have a rain shield and the flap type doors.

The circuit that the outside lights would be on is lightly used. (Clock
radio and some lamps)