Adding exterior electrical outlet

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

No, that's perfectly fine, provided that you hook it up on the 'load' side of the GFCI so that the GFCI will control the new outlet as well.

If you use it for landscape lighting, you want to use an "in-use" cover instead of the flap-type. They are raintight even with a cord plugged in, which you'll need since you won't be unplugging the landscape lighting every time it rains...

-Tim

Actually, I'd do that anyway. No point in having the re-set button on the other side of the wall.

Actually, it's in his panel

Even with a cover in place, an exterior receptacle is prone to premature failure from temperature and humidity extremes. Having the GFCI inside is a good idea.

I just installed outside receptacles downstream from the single receptacle (GFCI protected) requirred in an unfinished basement, and it sounds like you are doing the same.

Not there, so not a how-to, but this is what I would make sure is done:

Some things:

1. Makesure you have an exterior box and an 'in-use' cover. Which sounds like your 'rain shield'.

1. Ensure the circuit is GFCI protected, by using a hand held tester.

2. I like adding circuits, rather than tapping into existing ones, so I would try and see if I can add a circuit.

Good luck, fill us in on what you did, maybe some photos too. :)

tom @