Measuring the appropriate size that wires for a 40-gallon electrical water heater is really important. Unequaled wires can lead to brief circuits. You don’t desire that, perform you? 

So now the question comes, what dimension wire because that a 40-gallon electrical water heater?
An mean 40-gallon electric water heater requires 12 gauges the wire. Girlfriend cannot use a 6 gauge or 10 gauge wire in the case. The present will overflow and also the wire will begin melting. However, save in mind the the size varies according to a couple of factors.

You are watching: Wire gauge for 4500 watt electric hot water

Let’s uncover out what we should consider when choosing a heater wire. 
Why The size of Wires differ in different Water Heaters?How to calculate A 40 Gallon Water Heaters wire SizeWhy equivalent The cable Gauge Is necessary For An electrical HeaterThings to save in mind While replacing Wires that An electric HeaterFAQsBottom Line

Why The size of Wires differ in various Water Heaters?

Water heaters come in different sizes and capacities. Considering the dimension of gallons, the size of wires also differs.For example, a 40-gallon electrical water heater’s appropriate wire size is 12 gauge. 50 Gallon electrical water heaters require 6 gauges that wire.
The higher the gallon size the smaller sized the wire.The wiring may likewise depend on whether the water heater is vertically installed or horizontally.Amperage is additionally a component here. Because that example, A 20-amp warm water heater’s best wire size is 12-gauge. But, a 25-amp hot water heater’s wire dimension is 10-gauge wire. 

How to calculation A 40 Gallon Water Heaters wire Size

Now girlfriend can’t just choose any wire dimension for a 40-gallon heater. First of all, you must collect part data to measure it. Such as:
Type of wire (copper or aluminum) circuit phase circuit voltage One half of the full circuit length Total circuit amperage. An mean 40-gallon electric water heater runs at 240 volts and also a wattage the 2500 W. Hence, calculating the amperage 2500/240, we have the right to deduce the amperage is 18.75 A. The can about be calculated as 20 A.One-half of the full circuit is 80 meters and also has a single circuit phase. Now, you have the right to measure a 40-gallon wire size using a calculator. So, you deserve to use a 12 gauge copper wire for this.You have the right to calculate the wire size for her heater by adhering to the an approach above.

Looking for the best wire to use in an electrical heater? you’re on the best track! We have actually some proposal for friend :
Product 1Product 2
Now you have your wire, let’s uncover out why it’s crucial to have the perfect dimension wire. 

Why matching The cable Gauge Is essential For An electrical Heater

If you’re an altering the cable for her heater, did you do it to understand why equivalent it is very crucial. It reduces the possibilities of heating the wire. Top top the various other hand, if friend use unequaled wire, it will certainly lead to quick circuits. 

How? this is why-Suppose you’re using a 40-gallon water heater ~ above a 30-amp circuit v 6 gauge wire. A 220 volts heater passes much more current than the wires can hold off. It starts melting the surrounding materials, comparable to as soon as your shower head cable heats up!The danger level is very severe. One misalignment could even death someone.

Things to keep in psychic While replacing Wires of An electrical Heater

Before replacing any type of water heater wiring, you need to gain a permit. An inspector reviews if all the electrical and also plumbing relations are associated properly or not. If you’re walking to change the wire, you have to follow some instructions.The circuit wiring is included with a 40-amp double-pole breaker. It also includes 10-2 non-metallic (NM) cables. The black circuit wire should affix to the command of the black wire. The white circuit wire should affix the command of the red or white wire. At the breaker box, the white circuit wire must be wrapped with black or red electric tape. The symbolizes i beg your pardon one is a “hot” wire and which is the neutral wire? A 240-volt circuit passes present in both wires (black and white). So, connect the circuit ground wire with the environment-friendly ground screw of the water heater. Quick Tip: Make certain you’re using the an accurate size breaker otherwise you’ll damage your heater. If every else fails, contact a professional mechanic to deal with this problem.


Question: deserve to I replace my hot water heater myself?Answer: If you have experience, you deserve to replace a warm water heater by yourself. Yet no matter just how well skilled you are, you have to take permission for it. Also, before replacing them, follow the dos and also don’ts.

See more: How Much Do Loggers Get Paid ? Logger Salary

Question: have the right to I put a 40A breaker ~ above a 10 gauge wire?Answer: friend cannot placed a 40A breaker ~ above a 10 gauge wire. You must use an 8 gauge wire for a 40A circuit breaker. You deserve to use 10 gauge cable in a 30A breaker. Question: How many amps room 4500 watts?Answer: 4500 watts is equal to 18.75 amps. This is for an electrical circuit the 240 volts. 

Bottom Line

That’s it! You can now measure up what size wire for a 40-gallon electric water heater. If you want to replace the wire of her heater, monitor the instructions offered in the article. 

That’s every for today! expect we’ve got rid of any confusion about what to do. Till then, continue to be safe and sound!

Hi, Melissa here, from Illinois, US. I have been running a heater operator and also tender service for fairly some year now specialized to comforting the lives of world within their homes.

3 beneficial Tips on exactly how Тo Clean refrigerator Water present - October 20, 2021How come Mount speaker On wall Without Drilling Holes: defined - October 20, 2021How To eliminate Stain from Fiberglass Door? spot Removal - October 20, 2021
Categories Electrical, residence Improvement, HVAC, pipes Tags InfoPost navigation
Will Water Softener Salt death Grass? All involves Explained
Why Is over there Brown Water after ~ Draining The Water Heater?

Recent Posts

How to Reglaze Kitchen Sink? every You need to KnowHow To get rid of Monkey Grass? <7 reliable Ways>Ceiling paint vs wall surface Paint: which One to Choose?Ezoicreport this adEzoicreport this ad