My wife and I have decided to get a hot tub - we're leaning towards an artesian/island antigua - but prior to actually purchasing the tub, the rule has been set that the pad needs to be done and the electrical needs to be run. I finished the pad this weekend and now I'm on to the electrical. I've purchased the 6 ga/4 wire from home depot, i got a pre-built spa GFCI switch with a 2 pole 60 amp breaker, some 1" conduit and some other stuff. Incoming power is 200amp. Currently the breaker box is full, so i was thinking of getting some tandem 110's and doubling a few up to open some real-estate up on the panel and then running another 220 out of the control panel - or getting a tandem 220 and doubling the furnace and AC units on the tandem since they shouldn't be running at the same time. I don't know if this would be up to code though. I've sent in the permit application (today). I guess my questions are:

- will installing tandem breakers be troublesome when it comes time for inspection?
- I've read a ton on here about 50 amp square-d breakers - will a 60amp be OK? How do i determine if it's a square-D breaker?
- The wiring diagrams have been pretty helpful - although i have a question regarding the neutral bus and ground bus? i think anyway. My basic plan is to just attach the green wire to wehere the other green's are and the white to where the other white wires are - the neutral and ground bus seem to be the same bar, but the ground is towards the top and the neutral is towards the bottom - is this normal?

I guess i have a simpler question after some more research last night -
but i'm wondering now if it's better to use a tandem on 110's - consolidating 4 20-30 amp lines into 2 tandem breakers or to run the 2 240's (the AC and Furnace) on a tandem 240 breaker?

there are already 3 120 tandems in the breaker box.
thanks for the help -
john

I ended up consolidating the 4 110's into 2 110 tandems - a 20A and a 15A - freeing up 2 poles for a 240 60A breaker. So far so good. the 6ga wire is a pain to run and bend around though!

I acquired an Old Avanza Jacuzzi from the Early 80's and got it in place and my power from my Garage 240 Panel to a Jacuzzi Dedicated 60AM GFCI panel. Connected Black and Red to the 240 VAC Feed and the White to the GFCI Neutral Terminal then the GFCI White pigtail and Ground wire to the Main Panel Neutral Bus. Issue is when I connect the White wire at the Tub to the Ground Nuetral Bus the GFCI Trips, but If I just connect the Black, Red Wires to the Tub Circuit Breakers, and the Ground Wire to the tub ground/Neutral bus the tub works fine in all ways. According to the following website Electrical Forum I found this information: http://www.mikeholt.com/cgi-bin/codefor... =008656;p= Brief Synopsis: When he got into the wiring, he discovered that the tub was fed by only three conductors! Two hots and a ground, no neutral. I dug up the installation instructions for the tub, and it indeed showed a three-wire hookup: black, red, and green. So he said that trying to wire it with the GFCI I purchased may not work, and I believe him because there is no neutral (white) wire to attach to the center connection screw on the breaker! My question is, how prevalent are installations of this type? At a previous house I owned, I purchased a spa with a four-wire hookup, and he wired it the way I had hoped to wire this one with no problems. Fred, Your tub and the GFCI will work fine. It sounds as though you still have the owner's manual or something of that sort. If the instructions provided there are followed, it will work just fine. It will show the GFCI hooked up just like normal without a neutral wire on it. It's that simple. I tried to remember a link to a good site that shows how GFCI's work, but can't remember it. Maybe someone else will. Many hot tub manufacturers use three wire hook-ups. Sundance, and Jacuzzi used to I know. " title="Shocked" /> " title="Arrow" /> Now I am using 3 Wires, Black, Red as Hots and the copper ground as the nuetral, But have the white disconnected is that okay? :" title="Question" /> The GFCI does TEST okay, Thanks Wes

gee, an electrical installation problem. hope this could help. " title="Wink" />