Outside outlet installion

Thanks for the info about running wire along a fence.I didn't think about the expansoin contraction of PVC and went with the Rigit metal steel method going between 8" to 10"inches down with rigit metal for my outside Hot Tub,that is ,110volts.I've had it for 5yrs and had it plugged in to my regular home outlets(110) in (2) other houses.I do have 2 new guestions.#1-An Electrication at one of the local Do it yourself stores said that if I went with a GFI outlet 5'ft. from the Hot Tub and left the plug on the Hot Tub cord the GFI would then also become the shut off box.Meaning I wouldn't need a shut off breaker box and GFI just the GFI and plug.Is this true?#2-I'm running the Rigit metal pipe form the Hot tub outlet 30'ft out to a light fixture I want by the base of a outside yard tree.I want a lightsensor fixture with (2)lights shining on the tree.Is their a code height that I should come up from the the ground before mounting the fixture.Also from this fixture I've ran the Rigit Metal pipe 20'ft to a spot I plan on putting a pole light I would also like a Receptical outlet box on or near the base by the pole.Do they make anything for this proceeder,or do I mount a Metal box on the pole.I don't want to take out one of the bulbs and put a screw outlet into it.Again is their a minimium height for the box.I plan on digging a 2'ft hole to cement the pole into the ground.I thought about putting a 'T'junction box at the end of the 20'ft run and go down with a18"inch extension and sweepinging back up with (2) 90'sand a 24"inch extention that would go inside the pole about 8"inch.How does this sound(any ideas anybody?)I plan on running another 20'ft from the pole light to the other side of the yard for the last fixture.Thanks for any one help or ideas!

 

A receptacle is allowed to serve as a form of disconnect. You must install a bubble shield over that receptacle to make the receptacle and the plug both weatherproof while the plug is plugged in and you must stay a minimum of 10' from the hot tub with that receptacle. A 15' cord is allowed to serve a hot tub that is GFI protected.

The height of lights or receptacles from finish grade is to be above the datum plane. [normal high water level] in a heavy rain storm.

No other loads are allowed to share a branch circuit serving a hot tub, sorry.

Wg