Either

[jack]

If these are incorrect, why? What do they mean?
1. Either condition will damage the converter.
2. Either conditions will damage the converter.
3. Either one of the conditions will damage the converter.

Thanks.

[Tdol]

2 is incorrect.

[jack]

I just did a search on google.
http://www.google.ca/search?hl=en&q=...n+will%22&meta=
1. Either condition will...(How come google has so many results for 'either condition'?)

http://www.google.ca/search?hl=en&q=...s+will%22&meta=
2. Either conditions will..(I only have a few results for this one?)

1. Either condition will damage the converter.

I was reading my manual earlier and it uses this one. So this is incorrect?

If #1 and #2 are correct, what do they mean?

Thanks.

[Casiopea]

If these are incorrect, why? What do they mean?
1. Either condition will damage the converter.
2. Either conditions will damage the converter.
3. Either one of the conditions will damage the converter.

either is singular, so its noun is singular, too:

Either an apple or (either) an orange will do.

Sentence 1. and 3. are correct.

3. Either one of the (following two) conditions will. . . .
1. Either (this condition) or (either that condition) will. . . .

I believe tdol said that 2. was incorrect.