500 Feet – a 120-volt, 20 amp circuit would require 1/0 AWG wire. For circuit breakers up to 15 amps, use 14 gauge wire or larger. Double-pole breakers are twice as wide as standard breakers and attach to both of the 120-volt hot-bus bars in the service panel. In your case the wire is number 12 so it would call for a 20 amp breaker. 8. A 30 amp circuit requires a number 10 (10 gauge) wire. The minimum wire size that is allowable for use with a 30-amp breaker is 10 gauge. This designation A 30 amp circuit breaker should provide an adequate time delay for the compressor to start. When used in home wiring a double pole breaker is used when a 240 volt service is needed (for a high draw appliance like a range or dryer). 50. One may also ask, can you put a 30 amp breaker on 12 gauge wire? This breaker will work only in Square D branded residential panels. The neutral wire goes on the neutral bus and the ground wire on the ground bus. I severely doubt your electrician friend is actually an electrician or he totally misunderstood what you wanted. Single-pole breakers: Provide 120 volts, 15-20 amps and have one hot wire and one neutral wire. Use the Blue Sea Systems Circuit Wizard to select the correct wire size, circuit breaker or fuse type and amperage, and fuse holder. Typically you size the breaker to the wire. This article will explain how to wire a 30 amp RV breaker safely and adequately. In this way, can I use a 40 amp breaker for a 30 amp dryer? I would leave it the way it is. He had them all wired with six gauge wiring. It has a double 30 amp breaker. In addition to the industry exclusive "Trip to OFF" and simple 1-Step Reset feature, Eaton has added a trip flag to visibly indicate breaker status. In Canada the typical person will almost never encounter the 30 amp breaker. Double-pole breakers: Provide 240 volts, 20-60 amps and have two hot wires that share one neutral wire. If it is #10 wire you'd have to re-wire with #8. Seems simple to me. Currently I have a 220v, 30 amp breaker with 10 AWG Romex. These are almost always a double-pole breaker. A 150-foot, 240-volt circuit running on a 30 amp, the double-pole breaker would need 8/3 AWG wire supplying the shed from the breaker box. Get Started > The Circuit Wizard app is available for Android™ devices & iOS devices. If you really want the 40 amp breaker check the wire size going to your 30 amp breaker (see above advice from ratchet freak: "you will need to know the gauge of the wire all the way from the breaker to the heater.") The 30 AMP is a standard ANSI C73.13, TT-30P (plug) / TT-30R (receptacle). Square D bolt-on circuit breaker has a voltage rating of 120/240 Volts current rating of 30 Amps and interrupting rating of 10 kilo-Amps. A single pole breaker is typically used with 120-volt circuits, 15-20 amps. A double pole circuit breaker provides an appliance with 2, 30 amp, 120 volt services, for a maximum draw of 30 amps at 240 volts. A single breaker normally has 120V. A different type of doubled-up breaker is a "quad breaker," which serves two 240-volt circuits but is the same width as a standard double-pole breaker. A smaller gauge of wire indicates a larger diameter and the ability to carry more current safely. The receptacle is rated for 30 amps and cannot be protected by a larger amperage breaker. Connect each of the hot wires on the cable to one of the lugs on the breaker and snap the breaker … The first, a single pole breaker and the second, a double pole breaker. Can you have a 6 gauge wire go to a 30 amp double breaker? So you need TWO separate double-pole 40 amp … However, this question appeared in my feed and I'm North of the border so I figured I'd add a little. Use 8# or 6.0mm 2 wire for the same 12kW spa three phase 208V where the max current is 33.3 amp. QO 20 Amp 2-Pole Circuit Breaker The Square D by Schneider Electric QO 20 The Square D by Schneider Electric QO 20 Amp Two-Pole Circuit Breaker is intended for overload and short-circuit protection of your electrical system. The 14 gauge wire will be OK on the 15 amp double, since you are only using a maximum of 15 amps per half of circuit, and the breaker will trip if either of the sides are overloaded due to the tie together on the breaker. ** 20. A double pole breaker is primarily used with … No idea why 20 Amp breaker was installed. It sounds, though, as if this water heater requires TWO separate 40A 240V circuits -- 80A total. The manufacturer also requires a 30 amp breaker. This calls for a 30-amp, double-pole breaker wired with 10 AWG wire. The ANSI-certified and UL-listed unit is rated for 120/240 VAC and 10,000 AIR. Unlike a double-pole breaker, which serves a single 240-volt circuit, a cheater serves two 120-volt circuits; it cannot be used to supply 240 volts to a single circuit. Can we replace the plug or receptical … read more 1 SINGLE POLE 30-amp 120-volt Breaker 1 TT-30 Receptacle and 1 Black (HOT), 1 White (NEUTRAL) and 1 Ground Correctly sized wire The 30-amp service for an RV is 120-volt with a 3 prong receptacle and a single 30-amp dedicated breaker. Be sure to mark the white wire with black tape or color it with a marker on the end at the box and at the water heater. Typical applications for a double pole 30 Amp breaker include clothes dryer and hot water heater (240V up to 4.5Kw) in a home and requiring a wire size of 10-2. Wire amperage is a measure of the amount of current a wire can … No problem. The code on over current protection is usually based on the wire size. This was found in a panel today. The materials are on hand, so it’s time to install all the new wire between the breaker and the new 30-amp outlet. What size breaker do I need for a 2000 watt water heater? Q230 - Siemens 2 Pole 30 Amp Breaker Siemens QP breakers provide easy plug-in connections in Siemens enclosures and the time saving Insta-Wire feat... View full details $24.98 300 Foot Run – a 120 volt, 20 amp circuit would require 4/2 AWG wire. 15. 10. If you use a 30 amp fusible pullout disconnect, be sure to use a dual element or time delay 30 amp fuse. Certain appliances, as well as service-panel subpanels, require 240-volt circuit breakers, also known as double-pole breakers. 6. A 30 amp breaker will have a ‘single-pole’ appearance, meaning to say, it should have one handle, and one spot for the wire. Correct Wire Gauge For Home Circuits. Typical applications for a double pole 30 Amp breaker include clothes dryer and hot water heater (240V up to 4.5Kw) in a home and requiring a wire size … ... C-Series White Toggle Circuit Breaker - Double Pole 30 Amp 7365. The 2-Pole thermal magnetic circuit breaker features a lug terminal and accommodates aluminum/copper wire size of 14 - 8 AWG. 12. As far as the 30 amp breaker … There should be two black wires or perhaps a black and red wire connected to the two screws on the breaker. Any ‘real’ electrician would know a 14-50 would need a 50 amp breaker and wire to fit. Typical applications for a double pole 30 Amp breaker include clothes dryer and hot water heater (240 V up to 4.5 Kw) in a home and requiring a wire size of 10-2. I recently purchased a ductless mini split and am trying figure out the correct breaker and wire size. For example, a two-pole breaker at 15 amps on each pole (breaker handle) would supply 240 volts to the appliance on that branch at up to 15 amps, not 30. For a 20 amp breaker, use 12 gauge wire or larger. There was two 30s going to the compressor and washer/dryer combo. The amplifier has it's own appropriate over current protection by virtue of it's fuses. We have a space heater with a number 6-30P 250V 30 Amp plug We have a standard 250v 3 wire grounding receptical rated 20a 250v ac. Electric clothes dryers. However, a double pole breaker is essentially two breakers tied … The bottom line is, a 2000 watt 120 volt water heater should be on a 30 amp circuit consisting of #10 wire and a 30 amp single pole circuit breaker . A 30-amp breaker does not operate safely with a 12-gauge wire. CH 30 Amp 1-Pole Circuit Breaker with Trip Flag Eaton has enhanced its premium Type CH residential Eaton has enhanced its premium Type CH residential circuit breakers, making the best even better. There were three 60 amp breakers going to the Air handler, stove and electric on demand water heater. This breaker will work only in Square D branded residential panels. 14. A 40-amp double-pole breaker is 40 amps on each leg. #10 is fine for that application. When you wire a 60-amp breaker, you need 3-conductor wire, either 6-gauge or 4-gauge. The minimum wire size that is allowable for use with a 30-amp breaker is 10 gauge. Tom provided an excellent answer from an American perspective. 30. It is not OK to use a 40 amp breaker for a dryer outlet. General household receptacles and lighting. When plugged into a shore power using a single cable, an RV turns into a single appliance. Well, single-pole breakers and double-pole breakers differ in the voltage and amperage they provide as well as how they are wired. Welcome to the forums. A 30 amp circuit powers most domestic water heaters, some older or larger air-conditioners, table saws and a few other power hungry devices. In case of higher wattage, use the proper wire size according to the table and use manual. If you have a 30 amp double breaker, you can connect a single 10 gauge hot wire and it will work for 120 volt. At the breaker box , black to the breaker , white to the breaker, bare wire to the ground bar . Kitchen countertop receptacles for small appliances. This current must be fused by a 30 amp circuit breaker, single pole. For example, use 12# or 4.0mm 2 wire for up to 12kW, three phase 415V – 480V where the max current is 18.2A. 40. It uses a 120-volt current. In case of three phase spa wiring, use 12 or 10 gauge wire size for each line. Exclusive VISI-TRIP indicator provides highly visible red indicator flag for easy identification of tripped breakers. Most 30 amp circuits are 220 volt so you will need 10/3 with ground cable to power these. If not, change the breaker to a 40 amp 2 pole. Said he was told if the wire was larger for the 30 it would not matter. Electric ranges. They are constructed with one hot wire and one neutral wire. A 240 volt, 30 amp circuit would require 4/3 AWG wire. 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