Wiktor Wise
Electric showers can trip for a variety of reasons, from faulty wiring to internal electrical faults. In most cases, the circuit breaker trips due to an overload, which occurs when a circuit is forced to take more electricity than it can handle. This can be caused by a number of factors, including other appliances drawing power from the same circuit, a faulty thermostat, or a pump failing to supply water to the shower unit. Less commonly, a tripped shower can be the result of a short circuit, where a hot wire touches a neutral wire, causing a power surge.
| Characteristics | Values |
|---|---|
| Electric shower | Aqualisa Quartz 10.5kW |
| Breaker | 32A type 2 M6 LN 5932 MCB |
| Breaker size | 46 amps |
| Cause | Overload, faulty thermostat, faulty wiring |
| Solution | Reduce water flow, lower temperature, call electrician |
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Faulty wiring
- An overload of electricity: Showers require a lot of electricity to heat up, and if the circuit is overloaded, it can cause the breaker to trip as a safety precaution. This can happen when trying to achieve a high water temperature, or if other high-energy appliances are being used simultaneously.
- A short circuit: This occurs when a hot wire touches a neutral wire, causing a power surge and tripping the circuit. It can damage appliances, including the shower's electric water heater, and requires a professional electrician to fix.
- Incorrect wiring: An electrician may have wired the shower incorrectly, causing the isolation switch to trip.
- Internal electrical fault: The shower unit may have developed an internal electrical fault, causing the trip switch to activate. This could be due to a neutral or live wire to earth fault on the element inside the shower canister.
In most cases, it is recommended to hire a professional electrician to diagnose and fix the issue, especially when it involves faulty wiring. They can determine whether the issue lies with the shower unit, the wiring, or another component of the electrical system.
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Faulty thermostat
If your electric shower is tripping the circuit breaker, it could be due to a faulty thermostat. The thermostat's role is to regulate the water temperature inside the tank. If it malfunctions, it can cause the water to overheat, leading to a circuit overload and tripping the breaker. This can cause erratic changes in water temperature, with water that is either too hot or too cold.
A faulty thermostat may also cause both the top and bottom heating elements to turn on at the same time, leading to an excess of electricity flowing through the system and causing it to shut down. This issue is likely due to a buildup of limescale within the shower unit and is more common in hard water areas.
To check for a faulty thermostat, test whether the shower trips while running cold water. Slowly increase the temperature and observe whether the circuit trips. If it does, the thermostat and heating elements are likely faulty and will need to be replaced.
It is important to note that attempting to fix this issue without professional expertise is not recommended as it could potentially damage your electrical system. Instead, consider calling an electrician or a plumber to replace the faulty parts or the entire shower setup.
If you are experiencing issues with your electric shower tripping the circuit breaker, it is important to address the problem promptly to prevent potential damage to your property or physical injury.
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Overload
An overload occurs when a circuit is carrying more electricity than it can handle. Electric showers need a lot of electricity to heat up enough to keep the water warm. This means that the circuit can become overloaded, causing the circuit breaker to trip as a safety precaution.
A shower can cause an overload even if it is functioning properly. However, if the shower is faulty, it can cause an overload more easily. For example, a faulty thermostat inside the heater may cause both the upper and lower heating elements to turn on at the same time, using a lot of energy and potentially overloading the circuit.
The size of the breaker can also be the issue. For example, a 32A breaker may not be sufficient for a 10.5kW shower, which can draw over 45A. In this case, the breaker will trip on overload, but not instantly—it may take around 15 minutes of constant 45A to trip.
If your shower is causing an overload, you can try reducing the amount of hot water you use, or avoid turning on other energy-hungry appliances at the same time, such as hair dryers or portable heaters. If the problem persists, it is recommended to consult a professional electrician.
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Faulty shower
A faulty shower can be a huge inconvenience, especially if it keeps tripping the electrics. This is often due to an overload, where the circuit is trying to handle more electricity than it can manage. Showers require a lot of electricity to heat up and maintain warm water. By attempting to balance water pressure and temperature, we may inadvertently overload the circuit, causing the circuit breaker to trip as a safety precaution.
In some cases, the issue may lie with the shower itself. For example, a faulty thermostat inside the heater may cause both heating elements to activate simultaneously, resulting in excessive energy consumption and a tripped circuit breaker. In such cases, it is recommended to consult a local electrician to inspect the shower. They can determine if the issue can be fixed or if a new electric water heater is required.
Another potential cause could be a short circuit, which occurs when a "hot wire touches a neutral wire," leading to a power surge in the circuit. This can not only trip the breaker but also damage appliances, including the shower's electric water heater. As this issue involves faulty wiring, it is crucial to engage a professional electrician to locate and rectify the short circuit.
If you suspect that your shower is faulty and tripping the electrics, it is important to take prompt action. Start by contacting the manufacturer or a qualified electrician to schedule an inspection. They will be able to diagnose the issue and provide guidance on the necessary repairs or replacements.
To prevent further issues, it is advisable to avoid tampering with the shower or attempting repairs without professional guidance. Electricity and water can be a dangerous combination, so prioritizing safety and seeking expert assistance is always the best course of action.
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Faulty isolation switch
A tripping shower can be caused by a faulty isolation switch. When the shower is switched to hot, it cuts off and trips the electrics, requiring the circuit unit to be switched back up. This is because the electricity is grounding out somewhere, activating the trip switch and preventing the user from being electrocuted.
In some cases, this could be due to the mcb not being rated to the shower, for example, a 40-amp shower on a 30-amp mcb. However, if the rcd is tripping, there may be a fault with the shower itself. A neutral or live-to-earth fault on the element inside the shower canister could be the culprit.
As the repair process can be complex and involve electrical hazards, it is recommended to hire an electrician to investigate and resolve the issue. They may suggest replacing the entire unit or just the shower canister, depending on the specific fault and cost implications.
To prevent future issues, ensure that your shower is properly installed and rated for your electrical system. Regular maintenance and checks can also help identify potential problems before they cause any inconvenience or safety hazards.
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Frequently asked questions
This is usually due to an overloaded circuit. Showers need to heat up a lot to keep the water warm, which takes a lot of electricity. If you are trying to get the water as hot as possible by reducing the amount that comes out, you might end up overheating the water heater and overloading the circuit.
If your shower is on, and you have other high-energy appliances on at the same time, such as hair dryers, portable heaters or microwaves, this could overload the circuit.
It could be a problem with the shower itself. For example, a faulty thermostat inside the heater can lead to both heating elements turning on at the same time, which uses a lot of energy and can cause a circuit breaker to trip.
You should get your shower inspected by a local electrician to see if it can be fixed. If not, you may need to invest in a new electric water heater.
Yes, a short circuit caused by faulty wiring could be the issue. This is when a hot wire touches a neutral wire, causing a power surge and tripping the circuit. A professional electrician is recommended to deal with this.
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