I'd like to test if my hot tub was connected to ground.
The hot tub is underground and its electrical panel is not easily accessible. I'm trying to figure things out without access to the hot tub's panel.
The hot tub is 240V single-phase (TT earthing system) and is connected to a 10mA GFCI in my house's main panel. I have verified this connection and it's definitely taking current from the GFCI.
What I don't know is if the guy that installed it wired the ground properly. I tried taking a multimeter to test for continuity between the house's ground and the hot tub water, but it didn't show anything. If I test for voltage between a phase and the hot tub water, I get 240V.
Is the hot tub water itself not supposed to be grounded?
Any other test I could perform or that I could ask a licensed electrician to perform?
The GFCI never tripped so far, so maybe no valid reason for concern. Just trying to make sure as there are 2-year-olds using the hot tub.