I have seen these SqD devices and played with them. FWIW, I'm kinda surprised at SqD for offering such a product for isolating generator current from POCO current - it just seems kinda cheesy to me. My personal choice would be a double-throw, center-off safety switch (along with properly fitted connectors to the box, of course).
Mike (mamills)
[This message has been edited by mamills (edited 08-12-2003).]