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How many arc fault breakers do you need for a standard house? What are code requirements?

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There is the National Electrical Code rule and the rule applied by your local municipality. To be on the safe side, you should check with your local municipality. The 2005 NEC called for protection on outlets in bedrooms only, but the 2008 version calls for many other rooms to be protected. Again, it depends on what your municipality wants in the way of protection. At a minimum I would believe all outlets for bedrooms should be covered.

Posted on Sep 14, 2010

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Need arc fault breakers for a 127 volt system


If your question is in regards to a standard home panel system with a 120/240 feed the single pole arc fault breaker are rated for that installation. The 120 voltage is nominal and covers a range, usually +- 5%. So your 127 is within range for the 120 volt breaker.

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I have a treadmill on a dedicated circuit that trips a 15 amp BR arc fault breaker. When it trips it also trips two other arc fault breakers. Even when I change the breaker on the tread mill to a standard...


u have a loose connection somewhere, sometimes when an arc fault trips it will cause others to trip or you are having problems with more circuits than u think

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I need a 2 pole half size arc fault breaker


If you are pressed for space in your panel, it would be easier to free up space in the panel by replacing some of your standard breakers with half size--or "piggy back"--breakers. The freed up space will permit you to install a standard arc fault breaker.

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Installing arc fault interrupter with ground fault


Question is vague. Arc fault and ground fault are slightly different.

Are you installing arc fault breaker?
http://waterheatertimer.org/How-to-wire-GFCI.html#arc-fault
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

Code says Maximum 12 boxes per circuit breaker.

Arc fault breaker and GFCI outlet in bathroom?
>>> do not connect this way.
Do not install 2 fault protections on same circuit.
Install the arc fault circuit breaker, and then remove bathroom GFCI, and replace with ordinary outlet, or switch-outlet.

How many outlets can be connected to a bathroom GFCI?
It depends on total boxes on circuit.
Count the boxes. Max 12 boxes per circuit breaker.

How many amps can be connected to 15 amp device?
15 x 80% = 12 amps
Electricians use 80% rule to calculate safe maximum
http://waterheatertimer.org/Color-codewire.html
http://waterheatertimer.org/See-inside-main-breaker-box.html

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Apr 21, 2013 | Siemens Seimens Arc Fault Breaker

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Arc fault breaker in Bedroom,trips when I plug in my computer laser printer,the printer works ok in any other outlet in the house except the master bedroom that is protected by a arc fault breaker.


My experience with these breakers is that there could be some minor short in the equipment that cause them to disconnect. I have a filter motor that will not run on my ground fault breaker if it gets wet. There may be no problem with the breaker.
Gary

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1 Answer

What is the difference between the BR120AF and the BR120CAF?


The National Electric Code (NEC) now requires the CAF (Combination Arc Fault) breaker. It detects both parallel and series arcs. The older AFbreakers only detect parallel faults and are no longer permitted by the NEC. Even if you have the older AF breakers, as a great many of these breaker were installed over the years, they are certainly better than having just a regular breaker. The technology to detect series faults just wasn't dependable back then, it is now, though.

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1 Answer

What is a "r-fault recepticle" - this is an


It refers to arc-fault protection. If you google arc-fault you will get many hits including some of the standard sites such as:

http://www.cpsc.gov/CPSCPUB/PUBS/afcifac8.PDF
http://en.wikipedia.org/wiki/Arc-fault_circuit_interrupter
http://www.nfpa.org/assets/files/PDF/Electric/Arc-Fault_Circuit_Interrupters.pdf

You will want to check with your local building department or inspectors to see if they have adopted the code revisions that require them or not but even if the haven

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1 Answer

Breaker pops intermittently


It's the new 'arc fault' breaker. It's similar to a GFCI breaker only instead of monitoring current leaking for shock hazard, it looks for a arcing condition on the circuit. You can easily change this breaker out to a 'regular' circuit breaker and not sacrifice safety. Look at the panel and get the Mfg. name, like 'Square D' or ' Westinghouse', or what ever. Then go to Home Depot and get a matching amperage breaker, 20 for a 20, you know? Then turn the breaker off. Unhook the hot and the neutral wire from the breaker. Now, hook the white neutral wire to the 'neutral bus; where you see all the other white wires, pick an open hole and put it in. Tighten it up. Then put the new breaker (turn it off) in the slot where you take the arc fault breaker out. Hook the hot wire to the new breaker in. That's it!

Sep 10, 2009 | Siemens Seimens Arc Fault Breaker

1 Answer

Poped breaker


In canada arc fault breakers are used for the housing market, to protect bedrooms. For years we haven<t had a problem without them being installed.. Your pc should be plugged into a regular receptical and have a surge protector plugged into the wall outlet and your pc into the surge protector. This will protect you from lightning surges and if the problem insists, check to make sure you may have to many other recepticals (plugs) wired on the same circuit.

Jan 22, 2009 | Siemens Seimens Arc Fault Breaker

1 Answer

3 combination arc fault breakers tripping under load


What is happening is the white wire that comes off the breaker is probably too close to another neutral or too close to a hot wire that is on one of the other circuits that will make it trip when you use a drill etc... Check to see if the coiled up white wire off of the breaker is not near a hot in the panel. I have had lots of arc fault breakers trip for that reason.

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