WRONG,and,VERY BAD/DANGEROUS INFO!
When using continuous power (running and device for 3 hours or longer) you can only use up to 80% of the breakers amperage rating safely!
So 110 x 60 = 6600w
6600 x .8 = 5280w safely
Or 60 amps x .8 = 48 amps safe to use.
All the reduction prefixes are supposed to be calculated by the engineer that planned your house. I live in a not-so-advanced country, but we use the EU standard. Whenever planning an electrical system the current are calculated in following way:
Iz>Ib>In where Iz - is the current that the wire can take. Ib - is the current the breaker can hold for infinite time. In - the nominal load of the circuit. This rule also applies to all tables of wire gauge-breaker-load I've seen.
I haven't researched the American standards too deeply, but I honestly think everyone copied the DIN (German) standard in one way or another. Maybe you have other power-factor standards and such that may affect this coefficient you suggested.
Of course a 100% load isn't good for any device, but I would like to see the source of the information that lead you to stating that 0.8 is the right fixing coefficient and that "continuous power" is defined by "3 hours or longer".
Fixing coefficients are determined by the ambient temp, wiring and installation method. Manufacturers of electrical equipment use their own coefficients so they can state their device's nominal current - which is by definition - for unlimited time.
BUT, your reply is not complete BS since we're dealing with amateurs and not professionals here, and you can never be TOO safe.
You can always claim that messing with electricity is DANGEROUS because it is indeed so... Unless you're an experienced electrician.
Disclaimer : Electrical advice/supervision cannot be given correctly by means of telecommunications, therefore when setting up a NEW electrical system you must consult a certified electrician.
