Electric water heater wiring [duplicate]


In this video: Electric Water Heater Lesson Wiring Schematic and Operation. Thanks for watching!!!



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Guy Brown's Youtube Channel was launched to bring together facts, ideas and education surrounding self sustainability, passive and active solar energy, permaculture, homesteading, survival skills and to promote a conscious self-reliant mindset while building a better future through the use of renewable resources and viable alternatives. Applied practical application practices mentioned within this website can turn the average home into a working living sustainable environment thus reducing your...

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Guide to Wiring an Electric Water Heater

Electrical Question:How are the wires connected to a water heater?I’m wiring a electrical hot water tank. I have a 50 Amp wire to it out of the box is a white red and black and copper ground. Out of the hot water tank is only a red and black. Where does the white wire from the house hook up to?

This electrical wiring question came from: Nate, a Homeowner from Whittaker, Michigan.

Dave’s Reply:
Thanks for your electrical question Nate.

How to Wire a 240 Volt Residential Water Heater

Application: Wiring a 240 Volt 4000 Watt Residential Electric Water Heater.
Skill Level: Intermediate to Advanced – Best installed by a Licensed Electrical Contractor.
NOTE: Work in electrical panels is not recommended for homeowners, non-experienced individuals or non-electricians.
Tools Required: Basic Electricians Pouch Hand Tools, electric drill, auger bits and extension cord as needed depending on...

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Replacing an electric water heater requires a permit in most areas. This ensures that both the electrical and plumbing connections are done properly and safely and meet the local code requirements. Here we will look at the basic electrical requirements only. If you're replacing an existing electric unit, now is the time to make sure the original water heater wiring is up to snuff.

Turn Off the Power

Before you do any investigating or touching of water heater wiring or electrical connections, turn off the power to the circuit that supplies the water heater.

In most cases, the circuit is served by a 30-amp, double-pole breaker. Switch off the appropriate breaker in the breaker box, then use an electrical tester to be sure that the circuit is off by testing at the water heater.

Electrical Connections

The electrical connection for a water heater is made at a built-in junction box on the top of the water heater tank. This is enclosed by a cover...

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I’ve been getting lots of questions lately about how to wire an electric water heater. I’m guessing this is because a lot of you are switching your water heater from gas to electric due to the extremely high natural gas prices. Some people have also asked how to wire an electric hot water heater. I’ve always gotten a kick out of this. In my opinion, you do not heat hot water; you heat cold water. Perhaps is should be called a cold water heater. At any rate, call it what you will, I think we all understand what it is.

Unfortunately, I do not have an electric water heater in my home and I haven’t installed one in a while either. So. I had to “borrow” some pictures from the internet. I found a site with all of the images that I need. The article is entitled Chicago new condo water heater inspection.

This article is going to assume that your electric water heater is 240 volts and this is a residential application.

You need to install a 10/2 NM cable (romex) with...

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If you have a water heater in your home, chances are that you will need to the basics of water heater wiring. Several water heaters for homes are normally powered by 240 volt power supply. Working with electricity is not to be feared, if you can follow all safety precautions you will not have any problem. When it comes to doing the wiring for your water heater, you can do the job yourself. With this set of instructions and the necessary tools, you will be able to successfully do the job. Why call an electrician when you can safely do the job by following instructions.

Step 1 - Switch off the Power Supply

The first step in wiring your water heater is to turn off the power supply at the mains. Never try to do the wiring for any project with the power supply turned on. You need to also turn off the water supply.

Step 2 – Locate the Junction Box

You will need to locate the junction box on the water heater. This exact place could be different on each water...

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This example shows Tankless with terminal connections for 3 wires
Larger image Example shows 3 wires connected inside tankless
Electricity supplied by 3 separate wires from 3 breakers
Total electric consumption for typical tankless electric is 96 to 120 amps.

Before installing tankless electric, look at main breaker on household service panel.
If main breaker is 150 amps, then it is max-ed out carrying this tankless load.
Breakers are rated safe maximum at 80%
Main breaker 150 amps x 80% = 120amps safe maximum

Tankless electric water heaters consume large amount of electricity
This is because electric elements cannot heat water as fast as natural gas or propane gas.
Tankless electric water heater will cost more to operate than ordinary tank-type electric water heater.
This is because so much energy is wasted trying to heat water as it passes quickly in pipe.

To reduce energy consumption, add a tempering tank to preheat...

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Why would wiring an electric water heater be something you would even think about attempting? To troubleshoot an electric water heater, you need to understand how the wiring works. There are safety concerns to be aware of. Are you willing to take a little time and become familiar with this type of problem? Will you follow the safety guidelines? This information will help you by providing a general knowledge of your electric water heater.

Did you answer yes to the two questions above? Yes, then you are allowed to continue reading. Safety when it comes to an electrical repair cannot be stressed enough. Serious injury and even death can result from an electrical shock. I am not even thinking about inserting something humorous here. Electric hot water heaters use 240 volt with significant amperage. More than enough to kill someone. Are you sufficiently afraid, actually respect is the correct word. You always need to have a respect for electricity when you work around...

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You posted under electric heater.

1) If your electric heater is putting out black smoke, turn off circuit breaker immediately and call plumber.

2) If you have gas water heater, look at label on side of tank to get brand and model number.
This information will help you find manual for your product.
Each manual has troubleshoot steps for that specific brand and model and you can perform the troubleshooting steps.
Generic steps for smoky, yellow-tip flame include:
Too little air: Adjust air shutter
Clogged burner ports: Clean burner ports
Misaligned orifice: Realign orifice and burner.
Most manuals suggest taking apart and cleaning combustion area each year, including burner assembly.
Keep chemicals out of same room as water heater to avoid deterioration of burner and combustion chamber.

3) Add a comment with model and brand number, and I will try to find manual for you so you can walk through troubleshooting...

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How To Wire Water Heater Thermostat at Through the thousand pictures on the internet concerning Wiring Diagram For Electric Water Heater, we all choices the best selections having greatest resolution just for you, and now this photographs is considered one of images collections within our very best pictures gallery about Wiring Diagram For Electric Water Heater. Lets hope you can think it’s great.

The best choice is usually to utilize a confirmed and correct wiring diagram that is presented from a trusted source. A good, established company that’s of supplying the most up-to a long track record -day wiring diagrams accessible is not difficult to get. Infact, the providers they provide are fairly affordable when compared with what can occur if a poor schematic can be used. Often, a busy technician will not possess the time for you to confirm the accuracy of a wiring plan and might potentially move ahead together with the improper information in-hand on a repair...

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Follow the electric water heater troubleshooting guide below to solve your hot water heater problems.

If you don't feel confident to repair your electric water heater yourself this guide can give you a good idea of what's wrong with your water heater before the repairman arrives.

This guide is electric water heater specific. For problems common to both gas and electric water heaters go to hot water heater troubleshooting.

If this is your first attempt at electric water heater repair you will need to know how to use a multimeter and follow all safety rules when working with electricity.

Never open access panels with the power on. Always check the water heater power to be sure its off. Never trust a circuit breaker label.

Always check a multimeter on an outlet that you know is working before checking a water heater.

This water heater troubleshooting guide is for tank type residential electric water heaters.

Follow the links at the...

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Frequently Asked Questions About Water Heaters


Q. What Types of Water Heater are Available?

A. There are essentially two types of water heaters: Tank type water heaters and Tankless units. Tank type water heaters can be heated by electric elements, a gas burner or a heat exchanger from a furnace or solar collector. Tankless water heaters do not have any stored volume of water. These units heat the water as it is being used. However, because they are “instantaneous” water heaters, they require an extremely high amount of power to heat the water to a desired temperature.

Tank Type

The tank type water heaters can be powered four ways: gas fired, oil fired, electric powered, and external source heated:


The tankless water heater does not have a sacrificial anode rod but it will be subject to the erosive forces of water flowing through a small copper pipe. A pressure and temperature relief valve is...

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Check electrical panel to be sure that circuit breaker is in the "On" position (not in tripped or off) or fuses (if used) are installed securely and not "blown". Reset circuit breaker to "On" or replace any blown fuse(s) and wait 30 - 60 minutes for the water to warm. If water has remained cool, continue troubleshooting steps below.


Shut off the power. Most water heaters are supplied by voltages that can cause shock, burns and even death should an energized conductor come in contact with the body. Shut off power in the electrical panel by removing fuses or by moving the handle of a switch or circuit breaker dedicated to the water heater to the Off position. Completely remove and "pocket" the fuses or otherwise secure or lock the panel and place a note on the cover to alert everyone that work is being performed on the water heater circuit. This will prevent the accidental energizing of the circuit while you are working on it.



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Light Duty Commercial Electric Water Heater
The purpose of this manual is twofold: one, to provide the installer with the
basic directions and recommendations for the proper installation and
adjustment of the water heater; and two, for the owner–operator, to
explain the features, operation, safety precautions, maintenance and
troubleshooting of the water heater. This manual also includes a parts list.
It is imperati

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Safety Information FOR YOUR RECORDS Safety Precautions . . . . . . 3 Write the model and serial numbers here: # # You can find them on a label on the appliance. Staple sales slip or cancelled check here. Proof of the original purchase date is needed to obtain Installation Instructions service under the warranty. Location. . . . . . . . . . . . . . . 4...

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©Copyright Dave Rongey


Electrical Troubleshooting and Electrical Repair Questions and Answers about 220 volt circuit to 110 volt, 220 volt heater circuit to sub panel, 220 volt to 120 volt circuit, circuits damaged by lightning, installing a 120 volt heater circuit, installing a shed circuit, kitchen circuit not working, lincoln welder circuit, range and dryer circuit, refrigerator circuit, remote circuit monitoring system, roof circuit conduit, sq d circuit breakers, storage unit circuit, swimming pool circuit, tanning bed circuit, washer dryer circuit, water heater and oven circuit feedback conditions, water heater time clock circuit, water heater tripping main circuit breaker, wire size for a microwave circuit, wire size for workshop circuit, wire size for microwave circuit.

Question: I have a 220V outlet that is only used in the summer to run a window A/C unit. Can I tap off of this outlet to make a 110v outlet right next to it to run...

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Common problem with electric water heater installation is turning the power on before the tank is completely full of water. After the plumbing connections are complete, but before connecting electric power, open a hot water faucet all the way until the "hot" water runs FULL STREAM for three minutes. When first opened, you may only get air out of the faucet, then spurts of water. Wait until the water runs full and let the water run full for three minutes. If the tank is not completely full when power is turned on, the upper heating element will burn out and you'll have no hot water (until the upper element is replaced). Note - You will also need a circuit tester or volt meter to check for electric power.

Watch the Video "Replacing

a Standard Electric Water Heater"

IMPORTANT - Read and follow the printed Installation Instructions that came with your water heater. The printed Instructions and product labels contain model-specific information, important...

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Water Heater Contractors

Since few devices in the home consume as much energy as your water heater, repair is not something to take lightly. When problems occur, water heater repair is the key to saving yourself spikes in your energy bills, as well as larger problems down the road; however, if you have had the same unit in place for decades, water heater repair is not always the best option. New water heater installation is something worth considering now that energy costs are higher than ever. Effective water heater installation is dependant on several factors, including the size of your home, the number of people in your household, and the number of appliances like washing machines and dishwashers your home contains. For the eco-friendly, tankless water heater installation is often a very desirable option. Tankless water heaters are more energy efficient because they don't waste fuel keeping reserve water hot. Instead of keeping gallons of water at a constant high temperature,...

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Unsure if your water heater needs repair or replacement? Follow our tips to troubleshoot your water heater issues.

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Install a new electric water heater to save money and energy. Our video and step-by-step guide shows you how. Determine whether you need to replace your water heater ...

This tutorial describes how to easily install a replacement gas or electric water heater in your home.

The DIY Network offers the basics on how to remove your old water heater and install a new...

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Sourcing Guide for Electric Heater:

Meet China Electric Heater manufacturers, wholesalers, exporters featured in the Consumer Electronics industry from China. China Electric Heater factory with growing trade capacity and capacity for innovation have the greatest potential for growth in retail sales of consumer electronics and appliances. Technological innovation and the need to replace or upgrade products drive demand for it. Whether you need the best deals or the best customized products, we can recommend you suitable experienced exporters of this industry. Even you can book a factory tour online for inspection before making your deals. Electric Heater for sale in particular are seen as one of the categories with the greatest potential in consumer electronics. So just discover great deals, discounts, promotions and save money on room heater, heater, heating element. The vast consumer electronics trade...

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