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We read everything that comes in. The quickest way to reach us is email.

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Reporting an error

This is the message we most want to receive. If a specification, figure or claim on this site is wrong, tell us which article, which claim, and where the correct information can be found. We correct errors, update the article and note what changed.

Questions about equipment

We are glad to help you think a decision through. Tell us what you are working with and what matters most to you. We do not explain how to wire anything into a home electrical panel, a transfer switch or the utility grid, and we do not cover grid-tie systems; that work belongs to a licensed electrician.

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You are welcome to send specification sheets, certification documents and product updates, and we will treat them as a source to be checked. Please note:

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