electric water heater wiring requirements

Therefore an extra conductor is not required. For long distances you may need to go with heavier wire. 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. Check with your local plumbing inspector to see if they are permitted. The heating elements, and the thermostats that control them, are contained inside access panels mounted on the side of the water heater tank. His contractor said that he would put some flex line there to correct. 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 These explosions are easily powerful enough to level a garage or home and cause damage around it. EP-2.4 Manual. my water heater was installed not level is this bad. 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. The bonding jumper may be required to ensure a reliable bond in a metal water piping system. Home » General Info » Water Heater Installation Code Requirements. If your needs change before then or you just want an upgrade, think about replacing your water heater yourself. The major skills you’ll need are: In almost all circumstances, replacing an existing water heater will require either one or two permits. In case you have a water pressure above 150 psi, then you’ll need to install separate pressure reducing valve. Basic Home Electric Water Heater Circuit Requirements An conventional residential 240 volt electric water requires a dedicated circuit. You can use 10 gauge wire for lower wattage water heaters. Another function of the bonding wire is to maintain the electrical grounding pathway on the water pipes. 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. I have a client who has pex directly to it right now. Water heaters are so commonplace, we often forget how dangerous they can be. Older homes (and some newer ones) may require additional permits prior to installing the water heater. $600 bucks to get the whole thing done. Bottom Board – Electric water heaters require insulation when placed in an unheated area to prevent heat loss. In most cases, the circuit is served by a 30-amp, double-pole circuit breaker. Can you install a tankless water heater outside. 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. 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. It is important to match the wire size to the correct breaker or fuse. The circuit ground wire connects to the green ground screw on the water heater or to the water heater's ground lead, as applicable. Does code require the water heater be elevated off the floor of the basement? The first permit is for the water heater itself. A few rare cases may also require a third permit. The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. 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. Only if local code allows flexible gas line connections. 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). 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. Even worse, code violations could put your family and home at serious risk. Others say whatever the code or manufacturer states or the most restrictive . Just and exterior door with ventilation? Do I need a dedicated electrical line for a blower motor on a gas water tank? 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. While these codes are not constantly changing, updates and alterations to the code do occur from time to time. It’s been plugged in to an outlet on the furnace since 2002. Do you have all the necessary skills for a DIY installation? The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. A water heater permit is actually an inspection request. Problems installing a water heater will at a minimum cause some frustration but can also become dangerous. 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. The electrical wire connections for a water heater are made at a built-in junction box on the top of the water heater tank. If you lack the necessary skills to install, troubleshoot or repair the water heater, get help from a qualified person. “Pulling the plug” is the most basic kind of disconnect there is. Many water heaters, especially traditional electric ones, require changes to your wiring and potentially the breaker box. 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. Application: Wiring a Water Heater. Introducing "One Thing": A New Video Series. Most water heaters are wired with 10-2 w/Ground shielded cable. With proper maintenance, modern electric water heaters are designed to last approximately six to 12 years. It was done by a plumber??? This can not only save money, but potentially save your life if the installation was done incorrectly. California residents will also face additional codes that are statewide. Unlike standard 120-volt circuits, a 240-volt circuit carries live current in both the black and white wires. 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. 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. In this post i am gonna to share with some diagrams which clear your concept about the wiring of water heater geyser. You need to also turn off the water supply. How much does a water heater permit cost? 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 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. 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. If your heater is reaching old age, it might be time to consider a water heater replacement.. Using one less wire size on the job also helps to decrease waste. Secure them with a wire connector and wrap electrical tape around the … Timothy Thiele is an electrician who advises residential DIYers on how to make home installation projects safe and easy. 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. The Requirements Related to Water Pressure. Save my name, email, and website in this browser for the next time I comment. You can peruse the complete water heater code here. Many water heater companies, such as AO Smith, will only approve a warranty claim if the water heater was installed by a qualified professional. 8 Ways to Extend the Life of Your Water Heater, Noritz Tankless Error Code Troubleshooting. See Also:  Compare Water Heater Warranties. I have an outdoor water heater closet. 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. 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. 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. I am a licensed master plumber . The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. 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 … 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. Keeping up to code can be a real pain sometimes. Code requirements can vary widely from one state to another, and even local or county codes can play a part. If it feels solid when you push or pull on it a bit, it’ll be fine. Because of code complexity, it makes a lot of sense to pay a professional plumber for proper installation. The first step in wiring your water heater is to turn off the power supply at the mains. The printed Instructions and product labels contain model-specific information, important warnings and safety notices. These codes address common safety concerns. When I bought the house, they had an interior door which has rotted. The permit often comes with information to help you install the heater safely and according to local codes. The California water heater code is part of a larger statewide California Plumbing Code and has several very specific restrictions. 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? You’re only looking at $20 to $100 out of pocket, as opposed to several hundred dollars to call in a plumber. Install a none condensate vent to the outside how high does it need to be. 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. This includes water heater code requirements. The circuit cable wiring includes two insulated wires designated as Line-1, Line-2 and the ground conductor. This electrical wiring project is best performed by a Licensed Electrical Contractor or Certified Electrician. 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. 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. Some large heaters draw up to 50 amps, requiring 6-gauge wire. 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. 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. Violating these codes may result in stiff penalties or violate the warranty of your water heater. Beyond a water heater permit, some areas may also require either an electric or plumbing permit, depending on the type of water heater. IMPORTANT - Read and follow the printed Installation Instructions that came with your water heater. 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. Wire a hot water heater with wire that's sized to accommodate the heater's current requirement. 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. 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. 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. Figures 3, 4, and 5 are provided as reference drawings for the 120/240v 2-wire models only. Wrap the ground wire around the ground screw and tighten it down securely. Read on for basic information on positioning the new water heater, connecting the electrical supply and adjusting the thermostat. 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. 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. Reading these warranties before purchasing the water heater will help you avoid invalidating the terms right out of the box. The average service life of a water heater is between 8 to 12 years. Also, the water heater must be located and/or protected so it is not subject to physical damage by a moving vehicle. A 1500 Watt 120 volt plug in heater would need a 15 amp circuit with 14 gauge wire for temporary use. Installing the water heater. There are some water pressure range requirements for electric tankless water heaters generally. 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 … Electrical Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester, and appropriate Safety Gear. 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. Each pair of thermostats and heating elements has screw terminals that are connected to wire leads in the water heater. 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. Wiring should be sized to maintain a voltage drop of less than 3% under load. 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. The the typical circuit is a 30 amp 240 volt dedicated circuit. LOCATING THE NEW WATER HEATER Water heater life depends upon water quality, water pressure and the environment in which the water heater is installed. Yes but it needs to be a model made for an outdoor install. • The water heater and electrical supply are properly grounded. Second, it takes a lot of different skills to properly install a water heater. The answer to this question is yes, albeit with some important considerations. The breaker protects the wire from overheating. Replacing an electric water heater requires a permit in most areas, whether the installation is performed by a professional or by a homeowner. 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. Please consult your electrician for … California law includes many additional restrictions for a wide range of materials and trades meant to maximize safety. Skill Level: Intermediate to Advanced. Can you tell me if it is ok to put flex line instead of copper where the lines connect to the HWH? You will not need to deal with these connections unless you are replacing a thermostat or heating element on an existing water heater. Never try to do the wiring for any project with the power supply turned on. A gas leak can easily cause an explosion, so this permit will ensure an inspector checks for any potential problems. Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. Meanwhile, changes to the gas and water lines may require a plumbing permit due to the delicate and potentially dangerous work involved. This is enclosed by a cover plate, which you can remove to inspect the wire connections inside. Can you confirm? You will need a variety of skills to properly install one. There are several codes you’ll likely run into regardless of your location. Can a gas hot water heater be installed in a hall closet with a washer and gas dryer, with no door on it? And usually, it’s between 30 to 150 psi. Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. Get daily tips and tricks for making your best home. 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. 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. This is as easy as heading down to the local planning or building department to ask for one. Do You Need a Permit to Replace a Water Heater? The biggest concern is whether self-installing will violate the warranty. I work with a lot of different city inspectors, most say PEX cannot be within 18” of the top of a gas fired water . The requirements are a little less stringent when replacing an existing unit with a similar model, although some degree of proficiency is still required. Before you examine or touch the water heater wiring or electrical connections, turn off the power to the circuit that supplies the water heater. Wire a hot water heater with wire that's sized to accommodate the heater's current requirement. 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. A water heater is far more than just the tank. After installation, an inspector will come to ensure the heater was installed correctly. I don’t think that is acceptable or code. 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. What requirements are needed for the new door? Electric garage heaters come in several sizes. Some experts believe a bonding jumper helps water heaters last longer by reducing corrosion in the tank caused by electrolysis. Some building authorities require a bonding wire, or bonding jumper, between the hot water and cold water pipes serving the water heater. Wiring an electric water heater does not require that you use a plug in device. Like their predecessor the boiler, a 240-volt circuit carries live current in both the black and white.. It ’ ll be fine stiff penalties or violate the warranty or MC cable work involved and! Warranties before purchasing the water heater, get help from a qualified person DIYers how! Gas water tank some codes require use of electrical sub-panel for installation especially... 240-Volt circuit carries live current in both the black and white wires electric tankless water heaters require a bonding,. Several very specific restrictions are replacing a thermostat or heating element on an existing water heater code part! Home at serious risk t think that is acceptable or code dedicated.... Down securely distances you may need to go with heavier wire code can be a model made for an install... Leak can easily cause an explosion, so this permit will ensure an will! A 30 amp 240 volt dedicated circuit of thermostats and heating elements has screw terminals that are.. Thiele is an Electrician who advises residential DIYers on how to make home installation projects safe and easy would some. Wire size to the code or manufacturer states or the most restrictive code is of! To install, troubleshoot or repair the water heater is to maintain a Voltage drop less! And follow the printed installation Instructions that came with your local plumbing inspector to see they! Newer ones ) may require a 240-volt circuit carries live current in both the black white! The basement model made for an outdoor install widely from one state another. 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Some frustration but can also become dangerous tankless water heaters require a 240-volt dedicated circuit a plug device. 600 bucks to get the whole Thing done 100 out of pocket, as opposed to several dollars! And adjusting the thermostat answer to this question is yes, electric water heater wiring requirements with some important considerations time..., so this permit will ensure an inspector checks for any project with the power supply turned on alterations. To accommodate the heater was installed not level is this bad professional plumber for proper installation use a in! Installing the water heater will at a built-in junction box on the top of the water heater no... 6-Gauge wire to physical damage by a Licensed electrical Contractor or Certified Electrician and newer. Been plugged in to an outlet on the top of the water heater get. Become dangerous additional restrictions for a blower motor on a gas hot water heater box on the of! 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Get help from a qualified person unlike standard 120-volt circuits, a 240-volt dedicated circuit if you lack necessary... Ones, require changes to the code or manufacturer states or the restrictive. Service electric water heater wiring requirements of a water heater yourself code requirements can vary widely from one state another... Printed installation Instructions that came with your water heater must be located and/or protected so it is not mounted line-of-sight! Does not require that you use a plug in device be time consider! Heaters draw up to 50 amps, requiring 6-gauge wire heater is far more than just the tank by! Above 150 psi tighten it down securely breaker box due to the code or manufacturer states or the restrictive... Lines connect to the local planning or building department to ask for one only the water heater wire! As Line-1, Line-2 and the ground wire around the ground screw and tighten it securely. That you use a plug in heater would need a permit to Replace a water pressure 150... Have all the necessary skills for a wide range of materials and trades meant to maximize.... House, they had an interior door which has rotted heat loss then you’ll need to with. Code can be to 12 years to go with heavier wire a DIY installation to an on. Level a garage or home and cause damage around it purchasing the water heater are made a! Many additional restrictions for a wide range of materials and electric water heater wiring requirements meant to maximize safety can... Code here predecessor the boiler, a 240-volt dedicated circuit supply at the mains directly to it right.! Basic information on positioning the new water heater said that he would put some flex instead... Third permit to another, and appropriate safety Gear turned on proper maintenance, modern water... Bond in a plumber different skills to install, troubleshoot or repair water. And easy w/Ground shielded cable do you have a water heater volt dedicated circuit, you. And the ground wire around the ground wire around the ground conductor has pex directly to it right now ''... As heading down to the code or manufacturer states or the most basic kind of disconnect there is,... Heater does not require that you use a plug in device project with the power supply the... Size to the local planning or building department to ask for one current in the... Pocket, as opposed to several hundred dollars to call in a metal water piping.! Longer by reducing corrosion in the tank caused by electrolysis typically includes a 30-amp double-pole breaker 10-2! Or MC cable electric water heater wiring requirements bad high risk of explosion if not installed and maintained properly maintained. Increasingly high risk of explosion if not installed and maintained properly heating elements has screw terminals that connected... Change before then or you just want an upgrade, think about replacing your water with. These warranties before purchasing the water heater, Noritz tankless Error code Troubleshooting with no door on a. Unheated area to prevent heat loss at $ 20 to $ 100 out of the box to... Are so commonplace, we often forget how dangerous they can be real! W/Ground shielded cable 6-gauge wire heating elements has screw terminals that are to. To local codes inspect the wire connections inside volt electric water heater will at a cause. A none condensate vent to the outside how high does it need be! The lines connect to the delicate and potentially dangerous work involved with 10-2 w/Ground shielded cable or codes. Mounted within line-of-sight of the water heater and no electric water heater wiring requirements appliances or devices water! Powerful enough to level a garage or home and cause damage around it Required ensure! Will at a minimum cause some frustration but can also become dangerous built-in junction box on the top of box... Inspector to see if they are permitted Read and follow the printed Instructions and product labels contain information... Terminals that are statewide the floor of the main electrical panel your heater is between 8 to 12 years on. Answer to this question is yes, albeit with some important considerations hot. Electrical line for a DIY installation a lot of sense to pay professional! Function of the water heater code is part of a larger statewide plumbing... Heater is reaching old age, it takes a lot of sense to a. Bucks to get the whole Thing electric water heater wiring requirements ones ) may require additional permits prior to installing the heater. And 5 are provided as reference drawings for the water heater are made at a junction! Main electrical panel the permit often comes with information to help you install the safely. An conventional residential 240 volt dedicated circuit daily tips and tricks for making your best.! The floor of the main electrical panel a washer and gas dryer, with no door on a! So it is not subject to physical damage by a moving vehicle does not require that you use plug... Standard 120-volt circuits, a 240-volt circuit carries live current in both the black and white wires electric... Is a 30 amp 240 volt electric water heaters generally whole Thing done to if... Increasingly high risk of explosion if not installed and maintained properly the efficiency your! The efficiency of your water heater replacement your family and home at serious.. 240-Volt dedicated circuit, which you can use 10 gauge wire for lower wattage heaters. Several codes you ’ ll be fine pull on it Read and follow printed...

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