QO 100 Amp 2-Pole Circuit Breaker

# 10 for short distance. a direct short circuit like heating elements are not so effected by low voltage but electric motors are Ref., A/C, pumps, so the heaver the gauge the better they like it . a universal problem is power lines were put in fifty years ago not everyone had A/C and the modern appliances, pools and where there were 20 homes there are now 400, the lines servicing them are the same old ones so low voltage is a common experience. estimate how many feet from service to outlet. if your Ref. A/C pump motors, audio ,video equipment , ect. are lasting 3 years short lives look for low voltage

There are 2 different types of Square D breakers. There is a QO and a HOMELINE you will need to know what style your panel box is

Well “the main” could mean several things, but generally speaking in residential homes the main breaker is for the main panel, of your panel has no main breaker then by placing this breaker on a QO style Square D Electrical panel, with the feeder wires from your meter wired directly to this breaker then this breaker can power the electrical bus with up to 100amps. Usually you would want to buy an electrical panel with a main breaker already installed, Square D Homeline makes some kits with the main breaker for ~$45-$60 so less than this breaker cost I believe. Also currently if it’s your main panel and you are altering it, many areas of the United States require 200amps service for residential homes and anytime you alter your electrical it’s a good idea to bring it up to code or your kind of wasting your money on something that you will be taking out one day.

With only have max of 19.8 amps of load the breaker shouldn’t be tripping, so either the breaker is bad or you have some faulty wiring that could be a lose connection or could be shorting intermittently.

Yes, this breaker can be backfed if a main breaker retaining kit is installed.

Yes, the Square D QO 50A 2-pole breaker will accept from a #8 through a #2 AL or CU conductor.

Hello Nick, We need more information on the first breaker that you have, just to make sure this is the right replacement. You can contact us anytime using our chat live https://www.se.com/us/en/work/support/customer-care/contact-schneider-electric.jsp where an agent will be able to give you further assistance on this matter. Regards, Schneider Electric Customer Care.

Depends on what the units nameplate calls for. You are allowed to go 80% so if the unit FLA(Full Load Amps) is 48 ampers or less than a 60 amp breaker with # 6-2 would be the ticket.

Yes if the dryer and furnace run on gas/fuel. This breaker can be used to power any two independent 120V/20A circuits, such as your 2 kitchen receptacle circuits, or a mandatory 20A laundry room circuit and a dedicated circuit for a fuel furnace. However if the circuit requires AFCI, that usually needs to be at the breaker and this breaker won't do. (you cannot use AFCI receps in 99% of cases). Also if one circuit trips, it will knock out the other, which could be inconvenient.

Yes, this breaker is HACR rated.