I bought a 175W mercury vapor secuirty light and I want to install it next to my above ground pool. My plan is to buy a 4x4 16' treated lumber or use a 2" 20' metal fence post pipe (which I already have) to use as a pole; -4 feet into the ground (soil).
I plan to connect it to the GFCI outlet which my pump/filter is plugged into. The circuit is on a 20 amp breaker (12/2 UF) which runs from my garage's sub panel; underground about 40+ft. to the GFCI. Now i'm worried that if I install this light that high in the air; it might become a great lightning rod!!! Right? Especially if I use the metal pipe as the pole. What should I do (ground or no ground)? Also, I don't run the pump at night so these (light and motor) aren't going to be on at the same time. Thanks, Johnson