What type of breakers are available today that will allow "Double Tapping" in a residential breaker panel?
None that I know of. A wire nut can usually solve that problemo.
I had heard that square D made one but I can't find it anywhere? Also if I combine 2 circuits by a wire nut and then connect to breaker do I stand the chance of having to many things (outlets , switches) on one circuit. I thought that I heard that you could not have no more than 8 things like (Outlets and switches) on any one circuit?
You would have to inquire with Square D.
If residential like you say, IN GENERAL you could have 120 things on a circuit as long as it doesn't over load the circuit (assume no local amendments) and there are no other sections of code that requires those items to have a dedicated circuit (small appliance, laundry, etc.).
I think you mean "twin" breakers. Yes, most manufacturers have those available. But you can't overload the panel's maximum number of circuits.
You have to go back to the UL listing requirements and the instructions from the manufacturer--these are normally included in the catalog and sometimes in the package with the breaker. In general, I know of no breakers for which landing two wires under a single terminal or lug is allowed. As Nick says, you can splice the wires in the wiring gutter between the breakers and the side of the box. However, you must maintain the wire fill within the specified cross sectional area of the gutter.
Regarding having 8 devices on a single breaker you may be attempting to apply the requirements for commercial occupancies to residential occupancies. In a residence, for the general lighting load, you must have enough circuits to satisfy the 3 v.a. per square foot rule at the number of v.a. that would load the breakers to 80% of their rated capacity (this is assuming the loads are continuous, and you have no proof they are not). This is of course, a minimum requirement, and I strongly recommend more circuits--historically we have seen a continuous increase in the electrical loads and types of electrical devices we use.
Square D Homeline breakers still allow two wires on the same lug. You need to have one on each side of the screw though.
Great point -but only if it's copper. If it's aluminum, it is only good for one wire (according to the photo in the article). I was not aware that one could double up using the Homeline CB...
Square D QO and QOB allow 1-#14-#8 or 2-#14-10. All other QO ampacities are a single conductor.
I did not check Homeline but an east search by cat #.
Eaton CH also has some similar double conductor ratings per below. Found by searching for Eaton CH circuit breakers.
Other lines by both of these manufacturers or other manufacturers have not been researched.
my response did not say 10-30A only.
The short answer is none. Placing more than one wire on a single circuit breaker terminal is a poor practice and could lead to failure. There are tandem single pole circuit breakers available that fit in a single pole space. Some building officials will allow some splicing in the panel wiring gutter but isn't a good practice. If tandem circuit breakers are used care needs to be exercised and the building official may have something to say about their use. If you are running out of circuits it would be better to add a sub-panel.
Use a wire nut instead.
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