That was one of the "special cases" in the article I was referring to, but it strikes me as pretty white line. If you physically move to another state and do work, however temporary, you've obviously subjected yourself to that state's laws while you're there.
Now, if that created a nexus for all your business in that state, like sales tax on the entire thing installed---say you work for the Maytag dealer from whom the refrigerator was bought, across state lines---I'd call that a special case, but I'd expect it to come up when checking to see if service was covered.
Now, if that created a nexus for all your business in that state, like sales tax on the entire thing installed---say you work for the Maytag dealer from whom the refrigerator was bought, across state lines---I'd call that a special case, but I'd expect it to come up when checking to see if service was covered.