So I cleaned it out, filled it up, added chemicals, put in a new filter, etc.
For whatever reason, though, I couldn't find the power cord that comes with it. Because I'm a guy (and therefore inherently stupid) I just grabbed an extension cord out of the garage. Mrs. Grumpy kept telling me I wasn't supposed to do that, because the special hot tub cord had extra circuits or fuses or breakers or whatever in it, and you couldn't use something else.
But I wanted to get the hot tub going, so I told her it would be fine, and hooked it up.
The kids were excited, so I had them out in the yard with me. They counted down from 10 for me to flip the switch, turning it on for the winter.
"5-4-3-2-1- HOT TUB!". I pressed the button. The jets whirled, the water swirled, the kids laughed.
For about 5 seconds.
Then there was a loud "POP!"
And the hot tub turned off.
And the kids stopped laughing.
And all the lights in the house went out.
Another 5-10 seconds of absolute silence went by, finally broken by Mrs. Grumpy saying "You bozo."
She went around to futz with the switch box. She found the correct power cord in the garage. And I am in trouble.