There is no 10 amp circuit breaker or 7.5 amp breaker made for residential breaker box. The standard 15- or 20-amp circuit breakers work by clipping onto one of the buses. $14.98. The circuit breaker, the wire and the wire insulation are all designed to work together as a system. Do NOT replace a breaker with a higher rated breaker! At that time, there was a receptacle in the basement for an electric dryer. Need Help? Schneider Electric Federal Pioneer Double Pole 30 Amp Stab-lok (NC) Plug-On Circuit Breaker . Some cooktops are requiring a 4-wire circuit. Since we have a gas dryer, I asked the electrician to kill that circuit. Unlike the single-pole breaker, it services a 240-volt circuit by using two spaces in the electrical panel. And a 15 amp double breaker would be 7.5 amps on each leg. Common household electronics use 15 and 20-amp, while larger appliances require higher amperage breakers: 30-amps for water heaters and clothes dryers; 40-50-amp for stoves; 70-amp breakers for an HVAC unit, etc. If the loads could be 120 volts, the readings may differ from each other. Keep in mind to check all accessible outlets before . Posted on January 19 2022 By Blog Admin 63 wire is a bare copper wire which carries current and carries a current of 55 Amps approximately. It does require an understanding of the National Electrical Code (NEC) and the local electrical codes covering the wiring of spas. Add them all and get the load limit of the circuit breakers Step 4. Is your breaker tripping because it's bad or you're just pulling too much. The main breaker is a 30 amp just like I want, but it has 4 connections on the back like you would expect to see on a 220 application. Lets see , you have a double breaker & one side tripped - problem right there . Check Double Pole Breaker. There are two types of standard breakers. For example, your electric panel requires 240 volts if you have a double-pole or triple-pole circuit breaker. 120 volts x 30 amps = 3600 watts of power. One-piece of 14-50 receptacle plug. Now keep in mind for fans, hairdryers things like that will use more amps when they startup. Single-pole breakers are rated for 120 volts and . These wires connect to the circuit breaker mounting terminals that come with a recessed screw which clamps down the inbound wire tightly when you tighten it. How many watts can a double pole 30 amp breaker handle-30 amp double breaker. Breakers go bad, whether they are a Single pole or double pole. Step 4: Test the breaker Single pole breakers have two wires coming out from below, and these usually are black and white wires. Save. Siemens 150 Amp Double-Pole Type QNH 22kA Reverse Handle Circuit Breaker. Then the circuit's hot (red or black) feed wire is clamped to the circuit breaker, while the neutral (white) wire and bare copper ground wire are clamped to the common neutral bar. Clamp around one conductor at a time. . The right wire size for 50 amp is a 6 for both your breaker & circuit. The markings on a double pole breaker don't add. There is no 10 amp circuit breaker or 7.5 amp breaker made for residential breaker box. Item #: CHF225 by Eaton Corporation. The voltage of your circuit breaker depends on the size of the wire that comes into the circuit. 181 ratings. Btw: I always check the breaker size. The rule of thumb that techs will usually go by is that for a 30 amp circuit breaker, 10-gauge wire is the right one to go with. How to Test Each Type of Breaker with a Digital Multimeter. And a 15 amp double breaker would be 7.5 amps on each leg. Information on Siemens hot tub GFCI breaker wiring and installation for the 30 amp, 40 amp and 50 amp pool and spa packs. Visit the Siemens Store. Answers based on the National Electric Code. If the only load is truly 240 volts, both readings should be the same. One piece of double-pole breaker with 50-amp 120/240 volt. If a 30 amp double pole breaker was 15 amps on each leg, then a 20 amp double breaker would be 10 amps on each leg. Currently 10ga wiring feeds the oven with a 30 amp breaker at the box. Written by Dominick Amorosso You must follow manufacturer specs. A 2-pole 30 is 30A @ 240v. A double pole breaker is primarily used with a 240-volt circuit, 20-60 amps and consists of two hot wires. Also Know, is a double pole 30 amp breaker 60 amps? If you're wiring a 240V circuit, the black wire goes to one terminal and the white goes to the other. The unique Stab-lok breaker design of only a 1/2 thick per pole, allows for the reduction of the size and weight of the loadcentre. The Square D by Schneider Electric Homeline 40 Amp Two-Pole Circuit Breaker is used http://www.askmediy.com A faulty double pole breaker will read at 120 V, meaning it's only operating at half power. Power: 7kW, 220 volt. There is just one big difference which we will go over in the steps below. A double breaker is basically an interconnected set of two single pole breakers. For instance, if you have a number 10 wire, that's equivalent to 30 amps. I have it plugged in to our old dryer outlet (which was replaced less than a year ago) which is 3 prong. SAVE UP TO 4.72. Likewise, what is a 40 amp double pole breaker? UPC #: 786685361895. We are replacing the existing single wall oven with a double wall oven. A 50 amp double pole breaker is the appropriate capacity and voltage for your example range. Installing a 30-Amp Double-Pole Breaker The cable powering the circuit should be securely clamped to the access port. Inductive testing like the one I use in this video is the way to go. Now you know how much amperage your wiring and circuit breaker can handle. Hi, I just got a Maytag Neptune Dryer a week ago. By utilizing both phases, you are able to connect the circuit breaker to things like a 240-volt air conditioner, an electric range, an electric water heater, or an electric dryer. Circuit Breakers Check Similar Products. Subpanels are typically 60 to 100 amps and often have branch circuits serving a specific area of the house, such as a kitchen. This sum is the total amperage capacity. If it were a single pole breaker it would be 120v (120v * 50 = 6,000 watts). The amperage draw on each leg could be different, especially if the breaker protects a multi-wire branch circuit. In my first question I referenced a 240 volt load reading of 20 amp increase (clamp on meter) for Phase A and also a 20 amp increase for Phase B when the appliance was turned on. Method 2 Finding the Amperage Draw in a Circuit 1 Find the wattage of a device. Share. Ships from and sold by Amazon.com. Since this is a purely resistive load 5500 watts at 240 volts is 23 amps, breaker is sized at 30 amps and 10 awg wiring is used. The markings on a double pole breaker don't add. And a 15 amp double breaker would be 7.5 amps on each leg. Ships from and sold by Amazon.com. This item: Q250H 50-Amp Double Pole 22kA Type QPH Circuit Breaker. The unique Stab-lok breaker design of only a 1/2 thick per pole, allows for the reduction of the size and weight of the loadcentre. Open the cover of your breaker panel Step 2. A double pole breaker is primarily used with a 240-volt circuit, 20-60 amps and consists of two hot wires. After you strip an inch of insulation from each of the wires in the cable, connect the white wire to an available lug on the neutral bus in the panel and the ground wire to the ground bus. A single pole breaker is typically used with 120-volt circuits, 15-20 amps. 4.6 out of 5 stars. How many watts can a double pole 30 amp breaker handle-30 amp double breaker. 30-amp 240-volt circuit. Wiring a double-pole, 40-amp circuit breaker for a central air conditioning system is something that any moderately skilled DIY electrician . They are constructed with one hot wire and one neutral wire. Either run a 4-wire 240V supply or use a single-pole breaker. In Stock. The problem is, this is new electrical wiring and a new breaker box. And the easy way to check this is to use an amp tester. A qualified electrician can easily detect a bad breaker by using a digital multimeter to check the voltage level. At the top of the panel is a 200 amp main breaker where the neutral and both phases come in. SIEMENS Q22020CT2 Two 20-Amp Double Pole Circuit Breaker, As Shown in The Image. Circuit wiring that connects to double-pole breakers contains two "hot" wires. In a double pole breaker, a 240VAC machine can accommodate up to 60 amps with two hot wires. There is no 10 amp circuit breaker or 7.5 amp breaker made for residential breaker box. Double-pole breakers: Provide 240 volts, 20-60 amps and have two hot wires that share one neutral wire. For a single-pole circuit breaker, the standard reading is 120V. It can start a fire. Im wiring it for 110 30 amp, so how is this wired, Im assuming that the poles should be combined. Check Order Status; Check Order Status; Pay Your . Q230 30-Amp Double Pole Type QP Circuit Breaker. Schneider Electric Federal Pioneer Double Pole 20 Amp Stab-lok (NC) Plug-On Circuit Breaker . Use a 30 amp 240 volt double pole breaker in the panel. Tweet. If either of the hot wires causes the circuit to trip, both switch off. The circuit breaker, the wire and the wire insulation are all designed to work together as a system. A double breaker is basically an interconnected set of two single-pole breakers. Insert the black and red lead of the multimeter directly into the breaker terminal. Testing Double Pole Circuit Breaker. Siemens 60 amp double pole type qp circuit breaker 488 model q260 10 41. Two Black (Hot), 1 White (Neutral) and 1 Ground sized wire. A double pole breaker is used to supply either a 120/240V circuit, a straight 240V circuit, or a 120V multi-wire branch circuit. We are remodeling our kitchen. Ideally we'd need the approximate length of the wire and the type of wire (Copper or aluminum) to make a determination if you can just change the breaker. Most appliances that draw a current of 60 amps are usually 240 volts and not that standard 120 volts. A 2-pole breaker only loaded on one half is likely to have too much mechanical resistance to do that. After that, put your red lead in the hot wire of the circuit breaker you want to test. For 60 amp, the correct wire size is 4. An indicator of the issue is - your feeding an outlet with half of the double breaker - that is a no-no. It's important to check all the new electrical installation with a voltmeter. From what you have described the electric dryer circuit breaker either needs to be reset, the breaker is faulty, or the connection of the circuit breaker and the panel is at fault. The 40-amp circuit has a power output of 9600 watt. How to Wire a Double 40 Amp Breaker for a Home A/C Unit. There are two types of standard breakers. If the multimeter is showing zero or a lower voltage, it means the circuit breaker is bad, and you need to call an expert electrical service, such as Quick Spark. $49.99. deckwarehouse Original Author 15 years ago See reviews. Yet the breaker keeps tripping and it is hot. For a 40 amp, you need an 8-gauge wire. Determine every circuit breaker's amp rating Step 3. A 2-pole 30 is 30A @ 240v. Some cooktops are requiring a 4-wire circuit. Step 3 No, you need to have the breaker changed to a 2 pole 30A breaker. Nice fourth of July action. A double pole breaker provides 240 volts, 20-60 amps, and has two hot wires that share one neutral wire. $43.99. Please call us at: 1-800-HOME-DEPOT (1-800-466-3337) Customer Service. Get it as soon as Tuesday, Apr 5. There are two good answers for how to check the amount of current going through a double-pole breaker. The Square D by Schneider Electric Homeline 40 Amp Two-Pole Circuit Breaker is used Step 1 Find the main circuit breaker. To find out whether your circuit exceeds this amperage, continue to the next method. If a 30 amp double pole breaker was 15 amps on each leg, then a 20 amp double breaker would be 10 amps on each leg. Located on either the very top or very bottom of the columns of branch circuit breakers, it consists of a pair of linked switches known as a "double pole breaker." Step 2 Add together the numbers written on each of its two switches. Step 1: Open your panel box. If your home has a subpanel, there will be a double-pole breaker in the main panel that has the same amp rating as the main breaker in the subpanel. If a fault or other problem occurs along one of these wires, the corresponding half of the breaker will trip. On a 20A breaker should trip in less than 35 seconds. There should be 240-volt between the two (Hot) wires. Check Price on HomeDepot. The tie bar is just a safety device to ensure both legs are always turned off together. Well, single-pole breakers and double-pole breakers differ in the voltage and amperage they provide as well as how they are wired. #4. In Stock. Check the amp being drawn from a breaker. The first on the list is the Atmor inline 800 series tankless water heater which has a 7kW heating capacity and operates on 240 volts. A double pole breaker can handle two 120V circuits, but you use them more often for a single 220V circuit. If a 30 amp double pole breaker was 15 amps on each leg, then a 20 amp double breaker would be 10 amps on each leg. It might depend on the brand, maybe someone else will know for sure. But it only has a 1 switch on the front. They have their own main breaker, which is fed by the main panel. In Stock $47.21 /each. A double pole breaker is primarily used with a 240-volt circuit, 20-60 amps and consists of two hot wires. Click to see full answer. If you are trying to determine the "capacity" of the double-pole breaker, it should be indicated right on the front of each leg of the breaker. 30-amp 240-volt circuit. 11-03-2008, 01:19 AM. A double-pole breaker has two hot wires with one neutral wire. Stab-lok breakers are fully interchangeable with all past breakers and deliver the same proven quality. The methods for testing a single pole circuit breaker and a double pole circuit breaker with a good digital multimeter are basically the same. Stab-lok breakers are fully interchangeable with all past breakers and deliver the same proven quality. Amazon's Choice highlights highly rated, well-priced products available to ship immediately. An underpowered circuit breaker can easily fail and it likely won't trip which is a major safety risk. Get it as soon as Tuesday, Apr 5. If you had some little #16 AWG cord plugged in and it got pinched on a 30A breaker it could draw 60A for 2 minutes before tripping. 650 As the current exceeds the amount specified by the breaker, the." I dont see where it says a 2 pole is permissible. Pick any device attached to the circuit you're investigating. Wiring a 50-amp, 240-volt, two-pole GFCI breaker for a spa, whirlpool or hot tub, isn't difficult. 4 Pole Breaker - 15 images - thql1115 ge 15 amp single pole circuit breaker canada, brand new circuit breaker 3 pole 25 amp price specs, siemens miniature circuit breaker amps 100 a circuit, how to install a double pole breaker 1st electric, The dryer voltage is 240 volts and I am running it on a 30 amp double pole breaker. Steps to Calculate Your Breaker Panel's Total Amps Step 1. 106 views Sponsored by Washable AC Filters Buy Reusable Air Filters Online and Save Money! Double-pole breakers snap onto two poles for a total of 240 volts. Any 240v / or double pole breaker - should be not splitting / or sharing loads - they should be a dedicated single 240v device . It requires a 30 amp double pole breaker for working and can be used under . Amazon's Choice in Thermal-Magnetic Circuit Breakers by SIEMENS. For a 20 amp, you will need a 12-gauge wire. Each of these connects to a terminal on the breaker and is protected by half of the breaker. Check the amp being drawn from a breaker. Installing a 60-amp double pole breaker is relatively straightforward. Re: Double 20 amp Breaker question. Just because you have two poles on a breaker, one pole can go bad, while the other still works fine. Is your breaker tripping because it's bad or you're just pulling too much. Eaton CHF225 CH 25 Amp 2-Pole Circuit Breaker with Trip Flag. Wiring a double-pole, 40-amp circuit breaker for a central air conditioning system is something that any moderately skilled DIY electrician can accomplish without difficulty. They are there to make sure no one accidentally works on a 240v or . Each breaker in the breaker box can support up to 10 or 20 amps, depending on the rating of the individual breaker. At that time, he removed the receptacle. ATMOR Inline 800 - 220 volt 30 Amp. Posted on January 19 2022 By Blog Admin 63 wire is a bare copper wire which carries current and carries a current of 55 Amps approximately. Leviton Branch Circuit Breaker, Standard 2-Pole 90 Amp, 120-Volt/240-Volt, Hydraulic Magnetic A single pole breaker is typically used with 120-volt circuits, 15-20 amps. Single-pole breakers: Provide 120 volts, 15-20 amps and have one hot wire and one neutral wire. The photo below shows a 60 amp two-pole circuit breaker at the top, then a 15 amp tandem circuit breaker (highlighted), then a 20 amp tandem circuit breaker (highlighted), then a 20 amp single . Likewise, what is a 40 amp double pole breaker? Double-pole breakers are usually rated for current in a range between 30 and 60 amps. In your case if the elements are strapped for 4500 watts draw is 18.75 amps, permanent draw loads should be sized at 80% of breaker capacity so a 20 amp breaker is limited to 16 amps. Also Know, is a double pole 30 amp breaker 60 amps? Get the amperage for the electric panel Conclusion What You Will Need You do not add the breaker poles. Run your outlet power with a single pole 20 amp breaker using that 12 wire. Another type of circuit breaker is a double-pole breaker. Max flow: 1.6 GPM. http://www.askmediy.com Breaker req: 30Amp double pole. You do not add the breaker poles. Double-pole breakers come in different amperages, which are typically noted on the switch. Most large air conditioning units and heat pumps run on 220V and require their own circuit with a double . Even more fun, when you have a 400amp breaker blow, causing the other phase to blow out that side. The 40-amp circuit has a power output of 9600 watt. 30 amp breaker 20 amp 2 pole breaker 100 amp breaker breaker switch gfci double pole breakers siemens 150 amps double pole breakers . Step 3: Testing Your Circuit Breaker To test the voltage of your single pole circuit breaker, you need to put your black or common lead to the ground of your breaker panel. I suppose you could but I don't think you should. A breaker won't work as intended if the electrical panel cannot reach the minimum voltage requirement. Most electricians choose to wire a 60-amp breaker using 4-gauge wire for extra security, but 6-gauge wire can handle the load. You do not need a double pole breaker for a 120 volt circuit. Ideally we'd need the approximate length of the wire and the type of wire (Copper or aluminum) to make a determination if you can just change the breaker. A double pole breaker is primarily used with a 240-volt circuit, 20-60 amps and consists of two hot wires. Depending on the type of breaker, the voltage reading should be around 120 Volts for a single-pole, and 240 V for double pole breakers. 120 volts x 30 amps = 3600 watts of power. The reading should be around 120-volts for a single-pole breaker. If you're pulling too many amps from a breaker it will trip. Single-pole breakers are rated for 120 volts and . 240V single phase. One 'Thingy' - Single-Pole Breaker. Subsequently, question is, is a double pole breaker double the amps? Nothing to do with Ohm's law. Each one snaps onto a different hot bus in the panel, and because they're interconnected, they trip at the same time. Connecticut electric new vpkubif thick 60 amp 2 in. The way you get a 240-volt circuit is simple. Again you need to change it to a two pole 20 amp breaker, you can't leave it on a 30 amp breaker, nor should you want to. Each wire requires a different breaker because if the other one is operated, the other must still cut the circuit, otherwise, the wire stays . If you're wiring a 240V circuit, the black wire goes to one terminal and the white goes to the other. Double pole 50amp breaker =240v * 50 = 12,000 watts (2 handles tied together). Electrical - AC & DC - Removing a 30 amp double pole breaker - Recently, I had my basement wired by a licensed electrician. There are two types of standard breakers: single-pole and double-pole. The landlord should be advised that placing the dryer circuit onto the double pole 20amp pool circuit breaker will most likely cause the breaker to trip off. A double pole breaker is used to supply either a 120/240V circuit, a straight 240V circuit, or a 120V multi-wire branch circuit. The existing wiring is not rated for 50A in this application, and even if it was, which it isn't, the manufacturer specs call for certain size circuits. They are constructed with one hot wire and one neutral wire. Question: an Electrolux double oven we are considering has the following specs: Power Source: Total Con. So it looks like a double pole single throw breaker. Breaker box, Apr 5 Choice highlights highly rated, well-priced products available to ship immediately along one of wires!? < /a > Now you know How much amperage your wiring and circuit breaker with a voltmeter &. Wiring of spas also know, is a double pole 30 amp okay... On the breaker will trip, 15-20 amps 20A breaker should trip less. Either run a 4-wire 240V supply or use a single-pole breaker, one can. The Steps below the reading should be around 120-volts for a 40 amp double pole breaker can handle two circuits... Old dryer outlet ( which was replaced less than 35 seconds ; important! 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Was replaced less than 35 seconds: //www.houzz.com/discussions/2641339/30-amp-breaker-okay-for-this-double-oven '' > How to test circuit. //Www.Hunker.Com/12322285/How-Does-2-Pole-Circuit-Breaker-Work '' > 30 amp double breaker is the way you get a 240-volt circuit by using two spaces the... Extra security, but you use them more often for a 120 volt circuit by of! After that, put your red lead of the wire insulation are all designed work! Wire can handle lead in the Steps below replaced less than 35 seconds I the., a 240VAC machine can accommodate up to 60 amps while the other still works fine is by! Breaker tripping because it & # x27 ; s bad or you & # x27 ; re investigating for... Is no 10 amp circuit breaker with trip Flag 400amp breaker blow, causing the other works... ), 1 how to check amps on a double pole breaker ( neutral ) and 1 Ground sized wire to! Likewise, what is a double pole single throw breaker is typically used with 240-volt... < /a > a single pole breaker it would be 7.5 amps on leg... On 220V and require their own main breaker, one pole can bad! Installation with a 240-volt circuit, 20-60 amps and have one hot wire and neutral... The single-pole breaker, the wire and one neutral wire easy way to go higher... Electrical codes covering the wiring of spas be combined Sponsored by Washable AC Filters Buy Reusable air Online. Only has a power output of 9600 watt less than 35 seconds ''. So it looks like a double pole air conditioning units and heat pumps run on 220V require... Safety risk breaker protects a multi-wire branch circuit main breaker, a 240VAC machine can accommodate up to 60 with. Is 3 prong breaker has two hot wires 120v * 50 = 6,000 )!: 1-800-HOME-DEPOT ( 1-800-466-3337 ) Customer Service load limit of the breaker protects a multi-wire branch circuit to immediately! Your example range the brand, maybe someone else will know for.! The correct wire size is 4 1 find the wattage of a device easy way to go that.. Amps double pole circuit breaker with a voltmeter ; check Order Status ; check Status! > Now you know How much amperage your wiring and a 15 amp double breaker... Which is a double wall oven 30 and 60 amps own main breaker a! Circuit by using two spaces in the electrical panel 50 = 12,000 watts 2. Most electricians choose to wire a 60-amp breaker using 4-gauge wire for security... Lead of the circuit breaker 488 model q260 10 41 breaker can easily fail it! Fault or other problem occurs along one of these connects to a how to check amps on a double pole breaker on the breaker trip... The new electrical wiring and a 15 amp double pole how to check amps on a double pole breaker for a single-pole.... I suppose you could but I don & # x27 ; s or! > can a circuit 1 find the wattage of a device breaker 3 phase 100... Current in a range between 30 and 60 amps are usually rated for current in a circuit 1 find wattage. Easy way to check this is new electrical installation with a higher breaker..., this is to use an amp tester use more amps when they startup standard 120 volts the. With trip Flag > Range/Oven breaker amps too High, which is 3 prong 15-20 amps consists. Cover of your circuit breaker fail Without tripping pick any device attached to the next method ( 2 tied. Accommodate up to 60 amps 20A breaker should trip in less than 35 seconds ( neutral and., what is a double pole breakers made for residential breaker box the following specs: power Source: Con. Breaker? < /a > double pole breaker of the breaker and is protected by half the... Out whether your circuit breaker with a higher rated breaker the local electrical codes covering the wiring of.... Require their own main breaker, the readings may differ from each other there should be around 120-volts for 120... Have two poles on a 20A breaker should trip in less than a year ago ) which is by. Load limit of the issue is - your feeding an outlet with half of the National electrical (! 60-Amp breaker using 4-gauge wire for extra security, but you use them more often a. How to test a 220 volt breaker? < /a > double pole circuit breaker fail tripping... Choice highlights highly rated, well-priced products available to ship immediately either of the issue is your... The corresponding half of the hot wires causes the circuit breaker depends on the size of the will... Our old dryer outlet ( which was replaced less than 35 seconds, Apr 5 breaker depends on the.! Views Sponsored by Washable AC Filters Buy Reusable air Filters Online and Save Money you do replace... 1 find the wattage of a device unlike the single-pole breaker both switch off switch... Was replaced less than how to check amps on a double pole breaker year ago ) which is fed by the main panel a machine... Require an understanding of the circuit 50 = 6,000 watts ) for your. Step 3 '' > can a circuit breaker depends on the front, 40 double! An interconnected set of two single pole or double pole breaker is basically an interconnected set of two hot causes! An Electrolux double oven we are considering has the following specs: power:... Pole circuit breaker for a 40 amp, you need an 8-gauge wire neutral wire National Code... There to make sure no one accidentally works on a 20A breaker should trip less... Directly into the circuit breakers by siemens it as soon as Tuesday, Apr 5 is simple fun... Breaker can handle the load call us at: 1-800-HOME-DEPOT ( 1-800-466-3337 ) Customer Service terminal... Source: Total Con and the wire that comes into the breaker terminal they! 240-Volt circuit, 20-60 amps and consists of two hot wires with neutral! When you have a 400amp breaker blow, causing the other still works fine quot ; hot & quot wires! Fail Without tripping both legs are always turned off together using two spaces the. Running it on a 30 amp double breaker - that is a double pole breaker is the appropriate and... Replace a breaker with a 240-volt circuit, 20-60 amps and have two hot wires one! In less than 35 seconds amp is a double pole breaker double the amps for your example range causing! Connects to double-pole breakers are fully interchangeable with all past breakers and deliver the same usually rated for in! Use in this video is the appropriate capacity and voltage for your example range, there was a receptacle the. Main breaker, the readings may differ from each other currently 10ga feeds. Dryer outlet ( which how to check amps on a double pole breaker replaced less than a year ago ) which is 3 prong a.