He didn't check what size wire is used currently, but knows it is on a 20A breaker. Maintenance Both gas and electric water heaters are fairly easy to maintain. The label on the water heater will ⦠Beside this, what size breaker do I need for a hot water heater? Rated 1 out of 5 by James from BEWARE THIS PRODUCT NOT For houses on WELLS Bought the Giant water heater less than a month ago. The breaker size for a hot water tank is dependant upon the wattage of the tank. While all voltages are dangerous, it is this particular voltage which is most notorious for causing severe injury or death. The Rheem Performance Plus 40 Gal. *Information provided by the Air Conditioning, Heating and Refrigeration Institute (AHRI) and Bradford White. Features EES. we currently utilize a 60 gallon electric tank heater that seems adequate to our needs. Electric medium water heater provides an ample supply of hot water for households with 2 to 4 people. It has a vent size of 3 to 4 inches. Capacity: 115 â 450 litres A patented magnesium anode rod design incorporates a special resistor that protects the tanks from sediment, providing longer tank life. You need to know the Kilowatt rating of the heater to determine the Amps. It is important to match the wire size to the correct breaker or fuse. You can use 10 gauge wire for lower wattage water heaters. 4500/240 = 18.75 amps, will ⦠If itâs 4500 then the 20 amp will work but it wonât be code compliant. 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. Re: wire size for 50 gallon Rheem; Author: hj (AZ) There is no "fire hazard" with #10 wires and a 20 amp breaker. The Rheem Performance Plus 40 Gal. Your average residential 30 or 40 gallon water heater is 4500 watts and usually goes on a 30 A breaker. How to Install a 120-Volt, 20 Gallon Electric Water Heater. Typical residential tank-type water heaters are 30, 40 or 60 gallons. This unit comes with two 5500-Watt elements and an automatic thermostat which keeps the water ⦠The appliance is fitted with 2 replaceable Incoloy-sheated elements. The electric elements in an 80 gallon heater are the same size as in a 40 gallon, the only difference is that they will stay energized longer in the larger tank IF you use more water. So, it wonât work as effectively as it needs. What size breaker do I need for an electric water heater? Source(s): electrician 30 years. A friend wants to move his 3000W water heater 35' or so. This short circuit can flip the high limit switch on your water heater and/or cause the water heaterâs breaker to trip. Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. Instead, you need at least 25 Amp. For example, the A. O. Smith 50-gallon ProLine Power Vent Water Heater (available from SupplyHouse) has an FHR of 90 gallons, so it will provide up to 90 gallons of hot water in an hour. A. O. Smith's 40-gallon model is designed to last. For 2 or 3 people, a 40-50-gallon water heater is usually the best. If you have a compact home, you are likely to find that a regular water heater is too big and bulky. Remember the cable size must be able to take the Amps greater than the breaker chosen: 2.5mm Sq. I live in Canada my high gpm demand would be around 7-8gpm, inlet water temp around 37f in coldest months, would it be viable for me to install an electric tankless heater? Providing an ample supply of water to households with 2-4 people. Savings based on the estimated annual operating cost of a standard 50-gallon electric tank water heater using 3531 kWh per year vs. the 50-gallon, 3.39 UEF AeroTherm ® heat pump water heater using 958 kWh per year and national average electricity rate of 12 cents per kWh. Available in 40 imperial gallon capacity and can be connected to 120 V, 208 V or 240 V. Lochinvar Water Heater prices 40 Gallon is low and affordable compared to other top rated gas water heaters 40 gallon. up to 15 amps While 3500/240=14.6A, a water heater requires the circuit to be 25% above that, or 18.2A. This makes the total cost for a 40-gallon electric hot water heater between $1000 and $1,700 with the total costs of a 40-gallon gas hot water heater between $1,400 and $2,800. A 1500 Watt heater will cost the same to run whether it is 120 or 240 Volt. You can use larger wire if you want, but still keep it on a 20A circuit breaker. If it is a typical mobile home water heater it is probably 30 gallon under a cabinet or in a small closet space. It is extremely important that the circuit be OFF when wiring an electric water heater. The fire hazard comes in when you have #12 wires and a 30 amp breaker. He asked if it should be #10 or #12. This top entry water heater is designed to meet all of your residential water heating requirements. 3000=240 x Amps. Electric water heaters require a 240-volt dedicated circuit, which serves only the water heater and no other appliances or devices. Best Electric Mini-Tank Water Heater 1 Ecosmart ECO MINI 2.5 2.5-Gallon 120V Electric Mini Tank Water Heater. 5. The circuit wiring typically includes a 30-amp double-pole breaker and 10-2 non-metallic (NM) or MC cable. 9 1. Most home hot water heaters are powered by a 240-volt circuit. Get free estimates from water heater installers near you. Gal. What size breaker do you need for a 40 gallon ... hot water. 3000/240 = 12.5 Amps. This model has a 6 year limited tank and 1 year parts warranty. This model is designed to be installed under the sink to save space. The purpose of a circuit breaker is to protect the wires, and they dictate the maximum size breaker that can be used, not the other way around. 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