Code Q

Old 10-27-02, 07:24 PM
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Code Q

I just bought a house and noticed that the electric water heater is wired with 10-2. It is 240 volt with a 30 amp double pull breaker. Black wire to one half of the breaker, white wire to other half of breaker and bare ground to ground bus. The white wire is black taped at each end, is this NEC kosher. Shouldn't 10-3 have been used, same w/ A/C units. Could this be o.k. with my local jurisdiction or just "customary".
Old 10-27-02, 07:28 PM
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It is wired correctly.
Old 10-27-02, 07:30 PM
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I just read John Nelson's description of "pure" 240 circuits and see that electric water heaters and a/c units don't need neutrals. So my situation is probably o.k.
Old 10-27-02, 08:25 PM
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Yes, it's fine. If you had 10/3, you'd have this problem of having an extra wire with no place to connect it. In fact, I have to commend the electrician who did this. Although reidentifying the white wire is required by code, that step is often skipped.

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