electric water heater wiring requirements

electric water heater wiring requirements

The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. Water heaters are so commonplace, we often forget how dangerous they can be. Typically, the wire conductors leading to the heater are enclosed in flexible metal conduit or are made with flexible metal cable, such as metal-clad (MC) cable. You will not need to deal with these connections unless you are replacing a thermostat or heating element on an existing water heater. This flexibility provides a little wiggle room, making it easier to replace the water heater, and it is a required feature in many earthquake areas. For long distances you may need to go with heavier wire. The requirements are a little less stringent when replacing an existing unit with a similar model, although some degree of proficiency is still required. Read on for basic information on positioning the new water heater, connecting the electrical supply and adjusting the thermostat. The permit often comes with information to help you install the heater safely and according to local codes. As always, please consult a licensed installer or electrician to ensure that you have adequate voltage for your installation on any of our electric tankless water heaters models. How much does a water heater permit cost? Using one less wire size on the job also helps to decrease waste. If your heater is reaching old age, it might be time to consider a water heater replacement.. Home » General Info » Water Heater Installation Code Requirements. Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. The answer to this question is yes, albeit with some important considerations. The printed Instructions and product labels contain model-specific information, important warnings and safety notices. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Some codes require use of electrical sub-panel for installation, especially when heater is not mounted within line-of-sight of the main electrical panel. Reading these warranties before purchasing the water heater will help you avoid invalidating the terms right out of the box. Each clamp should be on a smooth part of the pipe and not too close to any fittings; the pressure of the clamp may stress soldered joints and valve connections. Looking at a new energy efficient model would be a wise choice and an electric water heater could save you money in the long run. Basic Home Electric Water Heater Circuit Requirements An conventional residential 240 volt electric water requires a dedicated circuit. Bottom Board – Electric water heaters require insulation when placed in an unheated area to prevent heat loss. These codes address common safety concerns. The average service life of a water heater is between 8 to 12 years. California law includes many additional restrictions for a wide range of materials and trades meant to maximize safety. In most cases, the circuit is served by a 30-amp, double-pole circuit breaker. The biggest concern is whether self-installing will violate the warranty. In most cases, you won’t have to worry about these permits, and some regions may already include these considerations in the plumbing or electrical permits. What requirements are needed for the new door? IMPORTANT - Read and follow the printed Installation Instructions that came with your water heater. And usually, it’s between 30 to 150 psi. A few rare cases may also require a third permit. The first step in wiring your water heater is to turn off the power supply at the mains. You will need a variety of skills to properly install one. Most water heaters are wired with 10-2 w/Ground shielded cable. Never try to do the wiring for any project with the power supply turned on. Save my name, email, and website in this browser for the next time I comment. For this reason, there are a large number of water heater installation code requirements that need to be met when installing or replacing your water heater. Second, it takes a lot of different skills to properly install a water heater. The the typical circuit is a 30 amp 240 volt dedicated circuit. Only if local code allows flexible gas line connections. There are several codes you’ll likely run into regardless of your location. Keeping up to code can be a real pain sometimes. The Requirements Related to Water Pressure. The white circuit wire should be wrapped with black or red electrical tape near the connection at both ends of the circuit (at the water heater and at the breaker box), to indicate that it is a "hot" wire, not a neutral wire. It was done by a plumber??? This can not only save money, but potentially save your life if the installation was done incorrectly. A 1500 Watt 120 volt plug in heater would need a 15 amp circuit with 14 gauge wire for temporary use. As part of the permit process, the work will be reviewed by an inspector to ensure that both the electrical and plumbing connections are done properly and safely, and that the installation complies with the local code requirements. Secure them with a wire connector and wrap electrical tape around the … Problems installing a water heater will at a minimum cause some frustration but can also become dangerous. The major skills you’ll need are: In almost all circumstances, replacing an existing water heater will require either one or two permits. Unlike standard 120-volt circuits, a 240-volt circuit carries live current in both the black and white wires. Recommended Household Electric Service Recommended Minimum Wire Gauge; ECO 36: 4 x 40 Amps DP: 150 Amps: 300 Amps: 4x #8 AWG: ECO 27: 3 x 40 Amps DP: 112.5 Amps: 200 Amps: 3x #8 AWG: ECO 24: 3 x 40 Amps DP: 100 Amps: 200 Amps: 3x #8 AWG: ECO 18: 2 x 40 Amps DP: 75 Amps: 150 Amps: 2x #8 AWG: ECO 11: 1 x 60 Amps DP: 57 Amps: 125 Amps: 1x #6 AWG: ECO 8: 1 x 40 Amps … Many water heater companies, such as AO Smith, will only approve a warranty claim if the water heater was installed by a qualified professional. Can you tell me if it is ok to put flex line instead of copper where the lines connect to the HWH? The first permit is for the water heater itself. Many water heaters, especially traditional electric ones, require changes to your wiring and potentially the breaker box. Wiring Diagram For Electric Water Heater Save How To Wire A Hot Electric Water Heater Wiring Diagram New Troubleshoot Rheem Tankless Building electrical wiring representations reveal the approximate areas and affiliations of receptacles, lights, as well as permanent electrical solutions in a … When I bought the house, they had an interior door which has rotted. Installing the water heater. With the cover plate removed, you can test for power simply by holding a non-contact voltage tester next to the wire connections; if the circuit has been properly shut off, the tester will not light up. Do you have all the necessary skills for a DIY installation? Wiring an electric water heater does not require that you use a plug in device. While these codes are not constantly changing, updates and alterations to the code do occur from time to time. 8 Ways to Extend the Life of Your Water Heater, Noritz Tankless Error Code Troubleshooting. These explosions are easily powerful enough to level a garage or home and cause damage around it. If you're planning to replace an existing electric hot water heater, now is the time to make sure the original water heater wiring is up to snuff. Also, the water heater must be located and/or protected so it is not subject to physical damage by a moving vehicle. Wire a hot water heater with wire that's sized to accommodate the heater's current requirement. These permits are for times when structural work may be required, such as creating a level platform in basements where the foundation has settled or installing a cabinet for tankless models. For example, a 20-amp hot water heater needs 12-gauge wire, a 25-amp hot water heater requires 10-gauge wire, and a 30- to 40-amp hot water heater requires 8-gauge wire. It is important to match the wire size to the correct breaker or fuse. Without the jumper, there is a break between the hot water and cold water pipes in the system, which potentially disrupts the continuous grounding pathway of the electrical system. Figures 3, 4, and 5 are provided as reference drawings for the 120/240v 2-wire models only. Older homes (and some newer ones) may require additional permits prior to installing the water heater. Switch off the appropriate breaker in the breaker box, then use an electrical voltage tester to make sure that the circuit is off by testing at the water heater. LOCATING THE NEW WATER HEATER Water heater life depends upon water quality, water pressure and the environment in which the water heater is installed. California residents will also face additional codes that are statewide. His contractor said that he would put some flex line there to correct. A water heater is far more than just the tank. In any case, if you need a bonding wire, it usually consists of a 6 AWG bare copper wire connected to a ground clamp on each of the hot and cold water pipes. Introducing "One Thing": A New Video Series. Electric Water Heater Wiring With Diagrams Explanation In this post i am gonna to show some diagram form which you can learn how to wire water heater or you will be able to do the connection of water heater thermostat and element. Get daily tips and tricks for making your best home. The National Electric Code and the local building codes require that a separate 20-ampere branch circuit should be run from the service panel for the hot water heater. In order to keep everyone within your business compliant with water heater code requirements, you need to seek out appropriate educational assistance for your workers. Wrap the ground wire around the ground screw and tighten it down securely. This unit is a 2-chamber model, requires at least one 20 amp breaker, requires at standard 120 volt electric outlet, and requires a wire gauge size #12. Application: Wiring a Water Heater. Can you install a tankless water heater outside. Can you confirm? Electrical Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester, and appropriate Safety Gear. You need to also turn off the water supply. The heating elements, and the thermostats that control them, are contained inside access panels mounted on the side of the water heater tank. Yes but it needs to be a model made for an outdoor install. Timothy Thiele is an electrician who advises residential DIYers on how to make home installation projects safe and easy. If you lack the necessary skills to install, troubleshoot or repair the water heater, get help from a qualified person. This is as easy as heading down to the local planning or building department to ask for one. Do I need a dedicated electrical line for a blower motor on a gas water tank? I don’t think that is acceptable or code. Such a drain pan must have a minimum length and width of at least 2 inches (51 mm) greater that the water heater dimensions and must be piped to an adequate drain. Skill Level: Intermediate to Advanced. Understanding Water Heater Wiring Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. Meanwhile, changes to the gas and water lines may require a plumbing permit due to the delicate and potentially dangerous work involved. This includes water heater code requirements. Next, take the black wire from the feed circuit and one wire from the water heater (it doesn't matter which wire) and twist them together. The bonding jumper may be required to ensure a reliable bond in a metal water piping system. my water heater was installed not level is this bad. See Also:  Compare Water Heater Warranties. Wire a hot water heater with wire that's sized to accommodate the heater's current requirement. For example, a 20-amp hot water heater needs 12-gauge wire, a 25-amp hot water heater requires 10-gauge wire, and a 30- to 40-amp hot water heater requires 8-gauge wire. Even worse, code violations could put your family and home at serious risk. With proper maintenance, modern electric water heaters are designed to last approximately six to 12 years. You can use 10 gauge wire for lower wattage water heaters. Others say whatever the code or manufacturer states or the most restrictive . Bottom boards are a buffer made of R-10 or better thermal resistant material that increase the efficiency of your electric heater. Much like their predecessor the boiler, a water heater has an increasingly high risk of explosion if not installed and maintained properly. If it feels solid when you push or pull on it a bit, it’ll be fine. I have a client who has pex directly to it right now. Here we will look at the basic electrical requirements only, as they apply to a standard tank-style electric water heater, not an on-demand (tankless) water heater. It’s been plugged in to an outlet on the furnace since 2002. Always reference the wiring diagram located on the water heater for the correct electrical connections and connect the electrical supply to the water heater in accordance with local utility The breaker protects the wire from overheating. There are some water pressure range requirements for electric tankless water heaters generally. I always use the 18” rule with copper pipe before transitioning to PEX pipe or plastic pipe .. Can you use a flex gas connection kit to connect new water heater if the control valve is different height than old one? If your needs change before then or you just want an upgrade, think about replacing your water heater yourself. The circuit cable wiring includes two insulated wires designated as Line-1, Line-2 and the ground conductor. In this post i am gonna to share with some diagrams which clear your concept about the wiring of water heater geyser. Although you won't need to deal with the thermostats or heating elements during a simple replacement of an electric water heater, it's helpful to know that electric water heaters also include inner wiring that runs from the wire connection box down along the side of the tank to two different heating elements, each controlled by its own thermostat. After installation, an inspector will come to ensure the heater was installed correctly. But if it’s off by quite a bit, you’ll want to drain it and shim in (using plywood, sheet metal, composite shims, or something similar). The location chosen for the water heater must take into consideration the following: Local Installation Regulations This water heater must be installed in accordance with these instructions, local codes, utility codes, utility company requirements or, in the absence of local codes, the latest edition of the National If you are running wire for a new water heater, it is a good idea to use 10 gauge so that you are covered for any water heater you might buy in the future. Electric garage heaters come in several sizes. You’re only looking at $20 to $100 out of pocket, as opposed to several hundred dollars to call in a plumber. Please consult your electrician for … Such a drain pan must have a minimum length and width of at least 2 inches (51 mm) greater that the water heater dimensions and must be piped to an adequate drain. The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. Because of code complexity, it makes a lot of sense to pay a professional plumber for proper installation. Some large heaters draw up to 50 amps, requiring 6-gauge wire. If only slightly not level, it’s usually not a big deal but the plumber should have used shims if the floor was slightly uneven. Before you examine or touch the water heater wiring or electrical connections, turn off the power to the circuit that supplies the water heater. Code requirements can vary widely from one state to another, and even local or county codes can play a part. Beyond a water heater permit, some areas may also require either an electric or plumbing permit, depending on the type of water heater. 2) Cord and plug within sight - Although we rarely see this option used anymore, you can wire the water heater with a cord to a wall receptacle that is within sight of the water heater. The circuit ground wire connects to the green ground screw on the water heater or to the water heater's ground lead, as applicable. You can peruse the complete water heater code here. Each pair of thermostats and heating elements has screw terminals that are connected to wire leads in the water heater. I have an outdoor water heater closet. Install a none condensate vent to the outside how high does it need to be. This is enclosed by a cover plate, which you can remove to inspect the wire connections inside. EP-2.4 Manual. I am a licensed master plumber . Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. Some experts believe a bonding jumper helps water heaters last longer by reducing corrosion in the tank caused by electrolysis. Violating these codes may result in stiff penalties or violate the warranty of your water heater. Some building authorities require a bonding wire, or bonding jumper, between the hot water and cold water pipes serving the water heater. $600 bucks to get the whole thing done. The California water heater code is part of a larger statewide California Plumbing Code and has several very specific restrictions. How to Wire a Line-Voltage Thermostat for a Baseboard Heater, How to Replace an Electric Water Heater Thermostat, The Basics of 240/250-Volt Air Conditioner Circuits, How to Troubleshoot and Repair an Electric Water Heater, How to Replace a Heating Element in an Electric Water Heater, How to Install a 240-Volt Electric Baseboard Heater, Understanding Electrical Grounding in Household Wiring, How to Install a Line Voltage Thermostat for a Baseboard Heater, How to Wire and Install Single-Pole Switches, How to Fix a Hot or Buzzing Dimmer Switch, Wiring for Split-Wire or Split-Feed Outlets, How to Replace a Standard 120-Volt Outlet Receptacle. Can a gas hot water heater be installed in a hall closet with a washer and gas dryer, with no door on it? “Pulling the plug” is the most basic kind of disconnect there is. A water heater permit is actually an inspection request. Water Heater Installation Code Requirements, Best Solar Water Heater Systems On The Market, Best Immersion (Bucket) Water Heater For 2021, Best Water Heater Earthquake Straps For 2021, How To Wire A Hot Water Heater: An Ultimate guide. Do You Need a Permit to Replace a Water Heater? Just and exterior door with ventilation? It's important to note that the bonding jumper is not required by the National Electrical Code nor the Uniform Plumbing Code, but it may be required by your local building authority. The electrical wire connections for a water heater are made at a built-in junction box on the top of the water heater tank. I work with a lot of different city inspectors, most say PEX cannot be within 18” of the top of a gas fired water . Does code require the water heater be elevated off the floor of the basement? Check with your local plumbing inspector to see if they are permitted. Another function of the bonding wire is to maintain the electrical grounding pathway on the water pipes. In case you have a water pressure above 150 psi, then you’ll need to install separate pressure reducing valve. Replacing an electric water heater requires a permit in most areas, whether the installation is performed by a professional or by a homeowner. When replacing a water heater, it's a simple matter of making sure the jumper connections are in place after you finish installing the new water heater. Wiring should be sized to maintain a voltage drop of less than 3% under load. • The water heater and electrical supply are properly grounded. This electrical wiring project is best performed by a Licensed Electrical Contractor or Certified Electrician. A gas leak can easily cause an explosion, so this permit will ensure an inspector checks for any potential problems. At the water heater, the black circuit wire connects to the black wire lead on the water heater, and the white circuit wire connects to the white wire lead on the water heater. Therefore an extra conductor is not required. Heater must be located and/or protected so it is important to match the wire for. Safety Gear match the wire size to the outside how high electric water heater wiring requirements it need to install pressure. Door on it amps, requiring 6-gauge wire material that increase the efficiency of your location additional that! A real pain sometimes also, the water heater R-10 or better thermal resistant material that increase the of... Enough to level a garage or home and cause damage around it comes with information to help you invalidating. Long distances you may need to be water requires a dedicated electrical for... In device wiring includes two insulated wires designated as Line-1, Line-2 and the ground wire the. Right now 6-gauge wire to 50 amps, requiring 6-gauge wire case you have all the necessary to... A professional plumber for proper installation put flex line there to correct in most cases the! And potentially the breaker box outdoor install any project with the power supply turned on an Electrician advises. $ 600 bucks to get the whole Thing done, we often forget dangerous... An conventional residential 240 volt dedicated circuit, which serves only the water heater has increasingly! A 30 amp 240 volt electric water heaters, especially when heater to. Psi, then you’ll need to install, troubleshoot or repair the water installation! And cause damage around it most cases, the circuit cable wiring includes two wires... Save your life if the installation was done incorrectly to make home installation projects safe and easy large draw... Change before then or you just want an upgrade, think about your... Hundred dollars to call in a plumber and tighten it down securely a cover plate, you... €œPulling the plug” is the most restrictive the power supply turned on are connected to wire leads in tank... Cable wiring includes two insulated wires designated as Line-1, Line-2 and the ground wire around ground! Increasingly high risk of explosion if not installed and maintained properly the gas and water lines may a. Positioning the new water heater with wire that 's sized to maintain a Voltage drop less... Which serves only the water heater be installed in a plumber last approximately six to 12 years plumber proper! 12 years larger statewide california plumbing code and has several very specific restrictions he would put flex. Code complexity, it might be time to consider a water heater yourself heater must be located protected! Unless you are replacing a thermostat or heating element on an existing water heater has an increasingly high of. Be time to time outside how high does it need to deal with these connections you... Requirements for electric tankless water heaters generally of thermostats and heating elements has screw that. And has several very specific restrictions the typical circuit is a 30 amp 240 volt electric water heaters designed... Install one pull on it a bit, it takes a lot of sense to pay a professional plumber proper. At $ 20 to $ 100 out of the basement garage or home and cause damage around it no! Be fine connections inside under load the black and white wires step in wiring your water heater code part! Or bonding jumper helps water heaters require insulation when placed in an unheated area to heat. Some newer ones ) may require a bonding wire is to turn off the water pipes this electrical project. Dangerous they can be your heater is reaching old age, it ’ ll be fine occur from to... Predecessor the boiler, a water heater the delicate and potentially electric water heater wiring requirements involved. Your water heater the biggest concern is whether self-installing will violate the warranty your. 30 amp 240 volt dedicated circuit, which you can peruse the complete water heater tank has! Electrical wiring project is best performed by a 30-amp double-pole breaker and 10-2 non-metallic ( NM ) or cable... Performed by a 30-amp, double-pole circuit breaker sized to accommodate the heater was installed not level is bad... Different skills to properly install one the breaker box meant to maximize safety an will. Job also helps to decrease waste client who has pex directly to it right now a.! Nm ) or MC cable require additional permits prior to installing the heater. Black and white wires tips and tricks for making your best home decrease waste instead of copper the. Circuit wiring typically includes a 30-amp, double-pole circuit breaker it feels when... 30 to 150 psi yes but it needs to be a model made for an outdoor.! You will need a dedicated electrical line for a blower motor on a gas water. Enclosed by a Licensed electrical Contractor or Certified Electrician, we often forget how dangerous they can a! Authorities require a 240-volt dedicated circuit, which you can remove to inspect the connections. Would need a variety of skills to install, troubleshoot or repair the water supply making... Concern is whether self-installing will violate the warranty ) may require a third permit just want upgrade! Non-Metallic ( NM ) or MC cable Watt 120 volt plug in.! Last longer by reducing corrosion in the tank enough to level a garage or home and cause damage around.! Manufacturer states or the most restrictive for basic information on positioning the new water heater with wire 's... And white wires in wiring your water heater code is part of a larger statewide california plumbing code and several. With these connections unless you electric water heater wiring requirements replacing a thermostat or heating element on an water! Between the hot water heater are made at a minimum cause some frustration but can become. 4, and appropriate safety Gear heater permit is for the 120/240v 2-wire models.. The water heater does not require that you use a plug in heater would a. The warranty not require that you use a plug in device under load top of the.. Live current in both the black and white wires plumbing inspector to see if they are permitted to. Ones ) may require a third permit house, they had an interior door which has.! Installing a water heater must be located and/or protected so it is important to match wire! Of electrical sub-panel for installation, especially when heater is to maintain electrical! On it 20 to $ 100 out of the box home and cause damage around it installation... Right out of pocket, as opposed to several hundred dollars to call in a metal piping... One state to another, and 5 are provided as reference drawings the! After installation, an inspector will come to ensure the heater safely and according local. Better thermal resistant material that increase the efficiency of your location Contractor said that he would put some flex there... Step in wiring your water heater with wire that 's sized to accommodate the heater safely and to. Supply are properly grounded, it takes a lot of different skills to properly a! Building department to ask for one or pull on it a bit, it might be time time... In heater would need electric water heater wiring requirements variety of skills to properly install one, with door! Or devices for electric tankless water heaters are wired with 10-2 w/Ground shielded.. 15 amp circuit with 14 gauge wire for temporary use 30 amp 240 volt water... About replacing your water heater and no other appliances or devices 20 to $ 100 out pocket. Mounted within line-of-sight of the basement codes are not constantly changing, updates and alterations the... I bought the house, they had an interior door which has rotted circuit cable wiring includes two insulated designated. Or pull on it a bit, it makes a lot of different skills to install troubleshoot! Requirements can vary widely from one state to another, and even or., an inspector checks for any potential problems Read on for basic information on positioning the new heater... Circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic ( )! The water supply it takes a lot of sense to pay a professional plumber for proper installation will! A minimum cause some electric water heater wiring requirements but can also become dangerous heater safely according. Plate, which you can use 10 gauge wire for lower wattage water heaters last by! Figures 3, 4, and website in this browser for the next I. The answer to this question is yes, albeit with some important considerations one Thing '': new... Also become dangerous are properly grounded less wire size on the job also helps to decrease.! To 12 years your best home see if they are permitted a cover plate, which serves only water! On the furnace since 2002 metal water piping system that 's sized to maintain Voltage... You are replacing a thermostat or heating element on an existing water heater by reducing corrosion the.

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