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# does 110 + 110 = 220?

#1
11-04-01, 04:50 AM
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trying to hook up a 220 hot tub, a "electrician" friend of a friend said that he installed a 40 amp breaker and ran a hot wire to each side, so 110+110=220 and it should work. Is this how this works? well, long story short the heater on the tub is only getting 110 and it is not working....any ideas? could the box in the garage, where it is hooked up only be a 110? Or should I pig tail a 220 line that was used for a dryer from the main box to the tub?

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#2
11-04-01, 07:20 AM
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The first step is a voltage test at the circuit-breakers terminals-you should read 220 volts.Note the color of the conductors on the terminals-if the branch-circuit cable is 2-wire the colors are Black and White-if 3-wire,Black and Red connected to the terminals.If you read 220 volts at the CB next check the cable conductors where they connect to the tub.If there's 220 volts at the tub it may be a wrong connection.Also--you may have a GFI circuit-breaker. Good Luck

#3
11-05-01, 02:38 AM
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At the panel, one wire goes to one circuit breaker, another goes to a 2nd breaker. As switchman says, it could be 3-wire or 2-wire (not including ground). If there is a 3rd wire it would be connected to the neutral bus and it must be the white wire. At the tub, the ones to use to get 220 are the ones connected to the breakers.

Make sure the breakers are connected to different hot buses. There are 2 in the panel. Usually the breaker slots alternate between them. So, looking down the left column of breakers, the top one is bus 1, the one below it is bus 2, the one below that is bus 1 again, and so on. Same with the right hand column.

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