240v heater wiring

For 120 volt baseboard wiring you will have 1 hot, 1 neutral and 1 ground. For 240 volt baseboard wiring you will have 2 hots and 1 ground; no neutral needed. Page 5 If you’re wiring a WALL thermostat for your heater, FOLLOW THE INSTRUCTIONS BELOW and the diagrams in Figures 10 or 11, depending on which side you’re wiring. Your electrical ...

240v heater wiring. Cadet 240 208 120 volt 1 600 500 000 watt energy plus in wall fan forced electric heater white with digital thermostat cec163tw ruby single vs double quotes quotesgram tinker board softheat ebkn owners guide manualzz nlw installation instructions step 2 baseboard wiring continued 8f2000 user manual page 4 12 the hot one garage …

240V outlets use two 120V wires simultaneously plus a neutral wire to power a single receptacle older homes and appliances may use three prong 240 volt outle...

Generally, if it's set up to be one 240V circuit it will be run in 3 wire romex. The wire going to the heater is 120v, you can't get 220/240 to ...A 240v 1 phase wiring diagram is a visual representation of the electrical connections and components involved in a typical 240-volt single-phase electrical circuit. This wiring diagram serves as a guide for electricians and DIY enthusiasts alike, providing a clear understanding of how to wire various devices and appliances in a 240-volt single ...Step 11: Connect the green or bare copper wire from the heater to the ground wire in the outlet using a wire nut. Step 12: Replace the cover plate on the outlet. Step 13: Turn on the power to the outlet at the breaker panel. Your 240 volt wall heater is now wired and ready to use. 20kW 240V tankless electric heater requires two 8/2 AWG copper wires. Basically, the amp draw is 83.33 amps, and two 8 AWG copper wires have a combined ampacity of 100 amps (more than 83.33A). Here is the full chart of what size and how many copper wires you need for 240V electric tankless heaters): Tankless Water Heater Wire Size Chart (240V): Wiring A 240V Heater. Continuous wiring connection of 230v single phase water heater is same as above for 240v where the only difference is that l1 and l2 are. I am not much for home wiring projects so i was a little intimidated by trying to wire in a 240 volt heater. If you have a larger space to heat or a higher wattage, the 240v is likely ...Wiring diagram for 110 volts 240v heater wiring diagram download Heater volt baseboard thermostat burner tarp trolling heaters 120v beckett furnace volts conditioning blower flame schematics overrun 2020cadillac outlets Dayton unit …

Line Voltage Thermostats For Electric Heating Cooling Install Troubleshoot Repair Or Replace A 120v 240v Thermostat. Comfort Zone Cz230er Thermostat Wiring The Garage Journal. Save These Instructions. Honeywell T410b1004 240 Volts Line Voltage Thermostat Double Pole.Cadet 240v baseboard heater wiring diagramKing electric Im wiring multiple 240v baseboard heaters in parallel withBaseboard wiring heater marley thermostat pole heaters relay hydronic fahrenheat series cadet rib baseboards diagramweb line schematron.I'm installing a 240V 40A electric garage heater. I expected to wire 2 hot (blk/red), neutral (wht) and ground (grn) but the heater only has 3 lugs. The ground lug's wire hole is much smaller than the hot lugs. Is this a pure 240V install where both neutral and ground are not needed? If so is the neutral/ground wire a smaller gage than the hot ...Jan 26, 2020 ... This channel is designed to offer insight and background on the science, art and practice of making alcohol based products at home.To be able to operate 120v and 240v on the same "multiwire branch circuit" you need 4 wires, which is two opposing 120v hot wires, a neutral, and a ground. The two opposing 120v wires would provide the 240v for the heater, and either of those hots (or each hot separately) could be used with the neutral to provide 120v.Dimaferr 360 Degree Electric Garage Heater, 7500 Watt Fast Heating, with IR Remote, Overheat Protection, Digital Thermostat, 180s Delay and 9 Hour Timer, Ceiling Mount Shop Heater, 240v Hardwired 4.6 out of 5 stars 10

4. Take the wire that came with the sauna heater and strip off the insulation from the end as well. 5. Using wire connectors or wire nuts, connect the exposed copper wires together. Make sure to twist them securely and cover them completely with the wire connectors to ensure a safe and reliable connection. Service Manual. Dimplex Wall Mountable E Heaters Sylvane. I Have An Dimplex Euh 240v 3 Phase That Am Connecting Directly To Wires Need Know What Line L 1 2. Dimplex 720001 Electric Baseboard Heater User Guide Manuals. 096513 23 Circuit Diagram Changed T0230 Intro With Xls12 18 Stat Change Indd. Dimplex Df2600 Mor Electric Heating Associates Inc ...Nov 16, 2020 ... In this video you will see how to hook up a heater in your garage which will include : How to connect the wires in the panel, Junction box ...2. Heater air flow must be directed parallel to or away from adjacent wall. 3. Observe all wall, floor and ceiling clearance requirements. 4. All wiring must be done according to national and local electrical codes. The heater must be grounded as a precaution against possible electrical shock. Heater circuit must be protected with proper fuses. 5.When wiring a 240V Dimplex baseboard heater, the first step is to determine the size of the heater. This will determine the number of circuit breakers and the type of cables you will need. The 240V power supply will require two circuit breakers, one for each hot wire. These circuit breakers should be matched with a double pole breaker.Thomas with Cadet Tech Support shows you how to install the BTF, single-pole, built-in thermostat on a 240-volt electric baseboard heater.More FAQ's and trou...

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366K subscribers. Subscribed. 929. 46K views 4 years ago. In this video I will show you how I installed this NewAir 2 in 1 240v Garage Heater. I will also show you how I …Do you know what’s included in your Rheem water heater warranty? It may not be as comprehensive as you think; get better coverage with a home warranty. Expert Advice On Improving Y...The 240V heater is on a 30amp breaker and is rated for 30amps so I'm pretty sure the wiring from heater to panel is to code. In the photo you can see there is a switch to optionally cut off power to the heater and I thought that this could be replaced with a 3-way switch that could either be off, power hard-wired heater, or power a 240V EVSE ...4. Locate wall studs closest to the supply wires and position the heater against the wall. 5. Remove the wiring compartment cover by removing the screw. 6. Remove the slotted knockout closest to the supply wires and install a strain relief connector. 7. Mount the heater securely to the wall with nails or screws.May 2, 2023 · A 120/240-volt circuit has two hots, a ground and a neutral wire, which allows the appliance to use both voltages. Sensitive electronics, like touchpads and timers, run on 120 volts, heating elements and condensers on 240 volts. Here I'll show you how to wire a 120/240V, 30-amp dryer outlet that accepts a four-prong grounded plug.

Oct 28, 2022 ... wiring a 240 volt thermostat for electric baseboard heater consult with codes before doing electrical work.Aug 24, 2015 · Thomas with Cadet Tech Support shows you how to install a double-pole wall thermostat on a 240-volt electric baseboard heater.Check out our voltage blog post... Wiring Diagram: The wiring diagram for a 240 volt heater outlines the electrical connections needed for its installation. It provides a visual representation of how the various components of the heater should be connected to ensure safe and efficient operation. Properly wiring the electric tankless water heater is crucial for its safe and efficient operation. The wiring requirements depend on the voltage of the unit. For a 240-volt unit, the white wire should be attached to one of the hot terminals (often labeled L1), and the black wire should be attached to the other hot terminal (often labeled L2). The wiring essentials for 240V heaters are different from those for 120V heaters. 240V heaters require a dedicated circuit that is wired to a 2-Pole circuit breaker. The wiring must be sized according to the wattage of the heater, and it should be able to handle the current flow. 14-gauge wire is usually sufficient for heaters of up to 1,800 ... A standard electric water heater has a two-pole breaker rated at 30 amps. The water heater is connected to a 240-volt circuit. It has a ground wire connected to the service ground ...Here's a little walk through of how to wire up a 240 Volt heater. The wattage can be changed if you wire it up correctly. Here's How!!!Thanks For Watching!...Learn how to properly wire a 240 volt heater with this detailed wiring diagram. Follow step-by-step instructions to ensure safe and efficient installation.European and rest-of-world heaters are all 230/240V, because everything there is 230/240V. Most will tolerate 240V because they're built to be compatible with the UK and some Asian nations which are 240V rather than 230V. Unlike us, they have 240V between hot and neutral. They use brown for hot, and blue for neutral.Dec 31, 2019 · The orange (a Normally Open) wire from the relay connects to the red (or white, flag it red if so) wire going off to the heater; The brown (the other Normally Open) wire from the relay then connects to the black wire going off to the heater; The red/yellow (3-WAY) wire on the timer (if present) is left insulated/unused

Jan 22, 2019 · The cable will have ground and two hot wires, we'll call them black and red. The "red" wire may be the white wire taped red, or even taped black. Doesn't matter which. Red and black come from the panel, stop at heater 1, and continue to heater 2. At heater 2, they terminate with red and black on opposite poles of the heater.

Learn the basics of tankless water heater installation and replacement, including the cost, materials and tools needed to get the job done. By clicking "TRY IT", I agree to receive...Thomas with Cadet Tech Support shows you how to install a double-pole wall thermostat on a 240-volt electric baseboard heater.Check out our voltage blog post...Out of all the garage heaters listed in this review, the best 240-volt garage heater is the KING GH2407TB Garage Heater and the Dr. Heater DR966 Garage Heater. The KING GH2407TB uses spiral steel fins for maximum heat exchange, while the Dr.Heater DR 966 has premium design at an affordable price. After reading about the 240-volt shop heater, if ...Cadet 240v baseboard heater wiring diagramKing electric Im wiring multiple 240v baseboard heaters in parallel withBaseboard wiring heater marley thermostat pole heaters relay hydronic fahrenheat series cadet rib baseboards diagramweb line schematron.Use a wire nut to connect the black from the T-stat cable to the other black that you just separated. Check: Grounds together. White from cable to one of the blacks from heater. Black from cable to the …Understanding 120/240V Wiring Color Code. Homes in North America are supplied with a 120/240V single-phase electrical service. The incoming 240V power is split into two legs. Each leg can provide 120V hot-to-neutral, and the two legs together will supply 240V, which is used to supply heavy loads such as air conditioning compressors and cookstoves.Once you have everything in place, you can begin wiring your tankless water heater with 240 volts. Start by connecting one wire to the “hot” terminal on the breaker, and another to the neutral terminal. Then, attach the grounding wire to the earth ground or ground rod. Finally, connect the wiring harness to the terminals of the water heater.Installation of 240 volt outlets usually includes the following steps: Determining of the best location for the new 240v outlet. Removing all obstructing objects like furniture, cabinets, and shelves. Shutting off power at the main breaker. Carefully cutting a hole in the drywall to receive the outlet.Baseboard heaters, for example, are wired with pure 240-volt circuits that have no need for a neutral wire. The 30-amp 240-volt circuit demonstrated in the project below is of this …

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Ideal for use with wall-mounted or retrofit in-built thermostat. Delivers optimum heat for areas affected by cold drafts. Nichrome open coil element allows instant heat conductivity. View More Details. Voltage (V): 240 V. 120 V. 240 V. Wattage (W): 2000 W. 1000 W.In this video I am installing a new Dyna-Glo EG7500DGC 240 volt Electric Heater. We review how to mount and connect it as well as comparing it to my much old...Gentleman, HOW WOULD YOU LIKE YOUR OWN PERSONAL STRIPPER? :) Klein makes the best IMO and here's a link to the same ones seen in this video: https://www.a...Cap off the red wire likewise at the water heater, and use just the black wire and white wire to connect the new water heater. Posting a picture of the breaker and its wiring, as well as the wiring at the box for the water heater will help ... the existing wiring is 240V. From the above posts it seems like making the circuit 120 ...Sep 10, 2018 · Cadet 48 1000w 240v Electric Baseboard Heater At Menards. Installation Instructions Step 2 Baseboard Wiring Continued Cadet 8f2000 User Manual Page 4 12. Cadet 30 In 500 Watt 240 Volt Electric Baseboard Heater White Installation Guide. Ping add thermostat to baseboard heater big off 64 page 5 of cadet electric 4f1000 user guide manualsonline ... In this video, How To Install A 5000 Watt Garage Heater! [COMPLETE INSTALLATION AND WIRING TUTORIAL]I am going to walk you through every aspect of installing...If the heater DRAWS 30A, you need 30/0.8==30*1.25==37.5A due to derating, so a 40A breaker and 8 gauge copper.. If the heater nameplate specifies a breaker of 30A, 30A and 10 gauge copper.And it will draw 24A or less.. A double breaker is a breaker for 240V loads (USA/Canada system) and a 240V 30A load needs a 240V …The wiring diagram for a 240V AC relay typically includes details on the power supply, input and output terminals, control circuitry, and any additional components. Interpreting a 240V AC relay wiring diagram requires a basic understanding of electrical symbols and circuitry. The diagram usually includes symbols representing the various ...Overall, 3 wire 240 volt wiring is essential for safely and effectively powering high-demand appliances and equipment. Its unique design and capabilities make it a crucial component of modern electrical systems. Advantages of 3 Wire 240 Volt Wiring. The 3 wire 240 volt wiring system offers several advantages over other wiring configurations.The Dyna-Glo 4800W Electric Garage Heater is the ideal heating solution for your garage, warehouse, or workshop with its 2 heat settings, convenient space-saving ceiling-mount, and adjustable thermostat. Portable, lightweight and easy to carry, the EG4800DG provides 16,380 BTUs while efficiently heating areas up 400 sq. ft. To ensure safety this heater … ….

Aug 24, 2015 · Thomas with Cadet Tech Support shows you how to install a double-pole wall thermostat on a 240-volt electric baseboard heater.Check out our voltage blog post... A. Connect one supply wire to one of the heater wires with a wire connector (not included). For 240 and 208 volts, it doesn’t matter which heater wire. Both supply wires (black and white) are hot. B. Connect remaining supply wire to remaining heater wire with a wire connector (not included). Figure 8b CUT ONLY THIS FACTORY CONNECTION! DO NOT ...Do you know how to make a solar water heater using a can? Find out how to make a solar water heater using a can in this article from HowStuffWorks. Advertisement You can harness th...Learn the basics of tankless water heater installation and replacement, including the cost, materials and tools needed to get the job done. By clicking "TRY IT", I agree to receive...From https://www.justanswer.com/ythiJustAnswer Customer: I'm wiring multiple 240v baseboard heaters in parallel with a wall thermostat using 10/2 romex and a...Some can still use standard 4500 watt heaters but it is not uncommon to see a 100-gallon water heater powered by a 10,000 watt water heater (240V circuit). This heater draws 41.7 amps; consulting the AWG wire capacity chart, you will see that you need an 8 AWG wire size (with 50A ampacity). Step-by-Step Guide for Wiring a 240 Volt Hot Water Heater. Wiring a 240-volt hot water heater can be a challenging task, but with the right knowledge and tools, you can successfully complete the project. Follow this step-by-step guide to ensure a safe and efficient wiring process. Gather the Necessary Tools and Materials The key is the wire: 15A = 14 AWG or larger; 20A = 12 AWG or larger; 30A = 10 AWG or larger; Since most residential circuits (except oven, HVAC, water heater, dryer, EV charger) are 15A or 20A, the 14 AWG and 12 AWG are the "standard" wires and, more importantly (if OK in your area), cables. In fact, you can use the a standard 2-wire (plus ...The wiring essentials for 240V heaters are different from those for 120V heaters. 240V heaters require a dedicated circuit that is wired to a 2-Pole circuit breaker. The wiring must be sized according to the wattage of the heater, and it should be able to handle the current flow. 14-gauge wire is usually sufficient for heaters of up to 1,800 ...Model # EG5000DGP Store SKU # 1001320220. The Dyna-Glo Professional 5000W Electric Garage Heater is the ideal heating solution for your garage, warehouse, or workshop with its 3 heat settings, convenient space-saving ceiling-mount, and adjustable thermostat. This professional unit comes fully equipped with an upgraded commercial grade heating ... 240v heater wiring, European and rest-of-world heaters are all 230/240V, because everything there is 230/240V. Most will tolerate 240V because they're built to be compatible with the UK and some Asian nations which are 240V rather than 230V. Unlike us, they have 240V between hot and neutral. They use brown for hot, and blue for neutral., If you need a primer on 240V that isn't dull, try this. There are two basic ways to wire a line voltage thermostat, similar to 2 ways of wiring a basic switch.. Power to the switch/stat, and then, a spur to the light/heater. This provides both supply wires (hot+neutral, or hot+hot in 240V circuits) to the switch/stat location, which smart …, Feb 19, 2022 ... Wiring a digital programmable 2-wire thermostat to control a 240V electric baseboard heater. This is replacing an analog 4-wire thermostat., Nov 8, 2019 · My understanding is the cadet heater needs a 30amp breaker, NEMA 6-30R outlet and I think I can run it with 10/2 cable. I would run the line up through the garage wall plate and have the cable behind the drywall and run it into a metal box for the NEMA 6-30R outlet. I am unclear if the 10/2 is sufficient, I believe it is, and then about ... , Each heater can draw 12.5 amps with both elements on. Since it's a continuous load, I derated to get 16.25 amps. There are 2 20-amp double pole GFCI breakers in the sub panel, one for each heater. Wiring runs from the subpanel to a switch box, with two duplex switches. From the switch box, 7 wires (four black, two red, one green) run out to the ..., My new-to-me Cadet #BH752 electric garage heater needs a new wall thermostat and 220v connection. The unit is 17-1/2" high x 16-1/2" wide x 12" deep and has a heavy gauge steel swivel/tilt mounting bracket. It will hang from the ceiling in one corner of the new shop. The unit draws 240v and 31 amps for 7.5 KW. The fan motor is a Dayton …, A 240v 1 phase wiring diagram is a visual representation of the electrical connections and components involved in a typical 240-volt single-phase electrical circuit. This wiring diagram serves as a guide for electricians and DIY enthusiasts alike, providing a clear understanding of how to wire various devices and appliances in a 240-volt single ..., Baseboard wiring heater diagram 240v watt connect supply left right schematron. Grainger baseboard heater residential roll 240v hardwiredBaseboard heater diagram wiring heaters 240v heating base board electrical help wire slant fin radiators problems fineline baseline 2000 connect Baseboard 240v doityourself.., Step 1: Turn off the circuit breaker that powers the pool heater. Step 2: Strip the insulation off the ends of the power wires using wire strippers. Step 3: Connect the black power wire to the circuit breaker’s hot terminal. Step 4: Connect the white power wire to the circuit breaker’s neutral terminal., NewAir G73 heater information and reviews on Amazon - http://amzn.to/2EBoDgxAdditional Garage & Home Space Heater Options on Amazon - https://amzn.to/361pEvx..., The wiring should be installed into the baseboard heater using a . Mar 29, · 5 videos Play all Electric baseboard wiring – Heater Alex Hamp The Secret to Getting a Perfect Paint Finish with no Brush Marks – Duration: seejanedrill , views. Multi-watt baseboard heater right or left wiring V or V supply. Connect one supply wire to the upper ..., The three wires in a 3 wire 240 volt circuit are typically labeled as hot, hot, and ground. The two hot wires carry the 240 volt current, while the ground wire provides safety by grounding the circuit and preventing electrical shock. The hot wires are usually colored black and red, while the ground wire is typically green or bare copper., Two for a 20A 240V circuit for a well pump. Two for a 20A 240V circuit for a saw. Now I just acquired a 4800W shop heater with a 6-30P plug, so apparently I now need a 30A 240V circuit. Am I practically able to avoid running another circuit? The options I can imagine off the top of my head are: Wire up a new single circuit outlet for the heater., The three wires in a 3 wire 240 volt circuit are typically labeled as hot, hot, and ground. The two hot wires carry the 240 volt current, while the ground wire provides safety by grounding the circuit and preventing electrical shock. The hot wires are usually colored black and red, while the ground wire is typically green or bare copper. , 2. Heater air flow must be directed parallel to or away from adjacent wall. 3. Observe all wall, floor and ceiling clearance requirements. 4. All wiring must be done according to national and local electrical codes. The heater must be grounded as a precaution against possible electrical shock. Heater circuit must be protected with proper fuses. 5., Voltage between High leg and Neutral = 1/2 x 220V x √3 = 208V (1-Φ). Voltage between two Hot Phases = 120V x 2 = 240V (1-Φ). Voltage between three Phases = 240V (3-Φ). These are the general setup and may vary and depend on the installation e.g. neutral wire may be needed for three phase 240V outlets etc., If you need a primer on 240V that isn't dull, try this. There are two basic ways to wire a line voltage thermostat, similar to 2 ways of wiring a basic switch.. Power to the switch/stat, and then, a spur to the light/heater. This provides both supply wires (hot+neutral, or hot+hot in 240V circuits) to the switch/stat location, which smart …, 3. Im trying to wire a sauna heater. Im using #12 wire as directed in the instruction manual (directions say 3x12awg 12.5 amp). The wire I purchased has 4 wires in it, two hots, a neutral, and a ground. Here's the diagram, which confuses me:, STEP 1. Mounting of Cove Heater. “EXAMPLE HEATER MODEL C7512C”. • Using the mounting bracket template, select the correct mounting distance from the ceiling or chalk line for the end brackets. (Note: heaters must maintain a 6 feet clearance to the floor.) • Mark first end bracket location. Page 3. STEP 2., Gentleman, HOW WOULD YOU LIKE YOUR OWN PERSONAL STRIPPER? :) Klein makes the best IMO and here's a link to the same ones seen in this video: https://www.a..., 120 240v Household Water Heater Installed And Working School Bus Conversion Resources. Atmor Thermopro 18kw 240 Volt 3 7 Gpm Stainless Steel Digital Tankless Electric Water Heater With Self Modulating Technology Com. How To Wire Water Heater. Rheem Electric Tankless Water Heater 208 240 Volt 18 000 W 75 A 1 Phase …, Wiring A 240V Heater. Continuous wiring connection of 230v single phase water heater is same as above for 240v where the only difference is that l1 and l2 are. I am not much for home wiring projects so i was a little intimidated by trying to wire in a 240 volt heater. If you have a larger space to heat or a higher wattage, the 240v ..., Set the housing in the wall and run your 12-5 wire through rubber conduit in the interior wall or sauna panel between the heater and the control panel area. If using the conduit, leave about 2' of rubber conduit coming out of the wall below the sauna heater. This will house only the 12 gauge wire not the 8 gauge wire., Wiring a 240v sauna heater is an essential step in creating a cozy and relaxing sauna experience. Saunas are known for their health benefits, such as improved blood …, Step 3: Baseboard Wiring. Before wiring the heater, one must check the voltage and the breaker beforehand. Almost all baseboard heaters need three supply wires to operate. If you’re using a 240V heater, you will have 2 hots and 1 ground for wiring. No neutral is required for 240V heater wiring., Connect the wiring using some wire nuts and then close up the heater. Lastly connect all the wiring in the junction boxes by connecting like colored wiring with wire nuts and putting cover plates on the junction boxes. 6. Turning Power on and Testing Heater. Lastly turn the power back on at the breaker and turn on the heater., ALDES ‎99 023 Specification Sheet. Page 1 Page 2 ф COMFORT ZONE CZ230E Installation MOUNTING THE BRACKET HEAVY DUTY 7500W ELECTRIC UTILITY HEATER DESCRIPTION Electric utility heaters are designed to meet a variety of heating requirements Heat output ranges from to 21 331 BTUs per hour to 25 589 BTUs per hour …, Jul 28, 2018 · 7500 Watt Garage Heater And Remote Thermostat Wiring Doityourself Com Community Forums. Garage Heater Installation A Diy Guide Home Improvement. Switching 240v 5kw Garage Heater Heating Help The Wall. Electric Water Heater Wiring Electrical Inspections Internachi Forum. Comfort Zone Cz230er Thermostat Wiring The Garage Journal , Thomas with Cadet Tech Support shows you how to install a double-pole wall thermostat on a 240-volt electric baseboard heater.Check out our voltage blog post..., Service Manual. Dimplex Wall Mountable E Heaters Sylvane. I Have An Dimplex Euh 240v 3 Phase That Am Connecting Directly To Wires Need Know What Line L 1 2. Dimplex 720001 Electric Baseboard Heater User Guide Manuals. 096513 23 Circuit Diagram Changed T0230 Intro With Xls12 18 Stat Change Indd. Dimplex Df2600 Mor Electric Heating Associates Inc ..., King Kbp2406 5700 Watt 240 Volt Single Phase Paw Garage Portable Heater With Built In Thermostat Instructions Assembly Manualzz. I Have A Sylvania Model Sich 5000w Garage Heater Am Installing But Would Also Like To Control It With Thermostat. Dyna Glo 5 000 Watt 240 Volt Electric Garage Heater Installation …, Current just flows between points of different potential. – Transistor. Dec 29, 2019 at 19:19. 240V rated heaters use half the current thus easier on wires and breakers when > 15A*120V =1.8kW but with less wire loss 240V* 12A = 3kW... 240V is preferred as it balances L1, L2 current to transformer shared by neighbours. – Tony Stewart EE75., But on occasion, you get a piece of equipment, such as a water heater, clothes dryer, lab power supply, that requires 240V. This is usually because it needs so much power that the current needed at 120V would be much too great for normal wiring, but by doubling the voltage, you can halve the current needed for the same power.