What size breaker do I need for a 40 gallon water heater?
What size breaker do I need for a 40 gallon water heater?
A 40-gallon water heater should have an average 4500 Watt capacity and 240 V emf. Thus, a 25 or 30A breaker is sufficient for a 40-gallon breaker. However, for your safety, we recommend getting a 30A breaker.Jul 3, 2021
Can I use a 40 amp breaker for a water heater?
You cannot put a 40A breaker on #10 wire. If you are sure there is (at least) #8 wire all the way from the breaker to the water heater, you can just replace the 30A breaker with a 40A breaker, but if and only if you have verified the size of the wire throughout the entire circuit.
Can a water heater run off a 20 amp breaker?
A water heater of this type is required to be considered a continuous load meaning that the branch circuit needs to be calculated at 125% of the heater's rated ampacityampacityAmpacity is defined as the maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. Also described as current-carrying capacity.https://en.wikipedia.org › wiki › AmpacityAmpacity - Wikipedia. 4500/240 = 18.75 amps, will work on a 20 amp OCPD but, 18.75*125% = 23.4 amps, requires a 25 or 30 amp circuit.Oct 2, 2012
What size breaker do I need for a 50 gallon water heater?
The standard for water heater circuits is #10, two conductors with ground (10/2) and a 30 amp circuit breaker for a water heater. If you are running cable anyway, just run #10 and replace the breaker so it's done right, once and for all.
Can I use a 40 amp breaker for a 30 amp water heater?
If you are sure there is (at least) #8 wire all the way from the breaker to the water heater, you can just replace the 30A breaker with a 40A breaker, but if and only if you have verified the size of the wire throughout the entire circuit.
Can you use a 60 amp breaker for a water heater?
Most Tankless Water Heaters, usually, require (2) 2-pole breakers. ... If the tankless heater is a total consumption of 60 amps, then, you may need only a 30 or 40 amp, 2 pole breaker. You should check with the manufacturer of the unit or, at least, look at the spec.
What size breaker is needed for a 50 gallon electric water heater?
The standard for water heater circuits is #10, two conductors with ground (10/2) and a 30 amp circuit breaker for a water heater.
How many amp breaker does a water heater need?
Electric water heaters require a dedicated 240-volt dedicated 30-amp circuit and a 10-2 non-metallic (NM) or MC cable. This means the breaker only powers the water heater and no other appliances. A 30-amp circuit breaker can power all 4500watt water heaters regardless of gallon size.Jun 17, 2021