Tom:
I am curious as to the difference too? I have never seen a CTL panel that will not accept tandem breakers and I have seen a lot of tandem breakers in use. (Even newly inspected installations that passed.) As you said, you still cannot exceed the amperage rating of the main breaker.
JDB:
"Go back and talk to your Square D rep again. I have a QO breaker in my hands the wiring diagram shows 2 wires and the UL label gives torque specs for two wires also."
My box of 10 20A QO's don't seem to say anything about being rated for 2 wires under the screw?
"Do not use tandem breakers unless your panel is designed for them (it must have a Class CTL label). Never ever put more circuits into panel than it is listed for."
The last time we checked with our Square D rep, ALL QO panels where listed to accept tandem breakers. Rep: "We wouldn't make the breakers, if the panel wouldn't be able to take them."
Are we talking about the same Square D here? Is there a rep in the group that can shed some light here?
[This message has been edited by bigbluewirenut (edited 01-17-2002).]
