In MA. What type of wiring should I use, and do I need any type of protection for the wire.
I like the low voltage idea. I am a bit confused however; and with no offense meant at all; What Flag would be left flying in the dark? Steven Wolf
I would use simple 12-18 Volt (low voltage) garden path lighting with a focused beam spotlight. You won't need to protect the wiring if you do that. If you use 110-120 Volt wiring, you're going to need to bury conduit to protect the wiring. The low voltage stuff is alot easier.
UF cable 12/2. Get a spade shovel and dig it under ground 12 if it isnt under a driveway(column 4 of table 300.5 of the NEC). The only protection you need for this wire is 12 of dirt and pipe where it comes out of the ground. You will have to use pipe on the side of your house and between the ground and light fixture with schedule 80 PVC or other rigid conduit. Remember before you dig to get a ONE CALL or diggers hotline to check for other buried cables/pipes. They can also tell you how deep the wire is if one is in the area of work.
Your okorder /... email if you need more help