The operation of an RCD Safety Switch

An RCD (residual current device) monitors a building's wiring for electrical current leakage. RCDs, also known as safety switches, can only be placed by a certified and insured electrician. You should make sure that your electrician is licensed and insured so that if an RCD Safety Switch fails due to the electrician's negligence, you are covered. If the electrician is unlicensed or uninsured, you may not be covered by your own insurance, which could be expensive. We would gladly provide evidence of our insurance and licensing.

What is an RCD used for?

The RCD continuously measures the amount of current flowing through one wire in one direction and another wire in the opposite way. If it detects a difference of 300 milliamperes (mA) or more, or in some situations less, it breaks the circuit and stops the flow of energy.

If the current is "missing," it indicates that there is a leak in the wiring arrangement. If this current were to leak through a person's body, it might cause a lethal electrocution.

Residual current devices safeguard individuals.

What is the distinction between fuses, circuit breakers, and RCDs/safety switches?

Circuit breakers are a more contemporary method. An inbuilt switch will trigger in the event of an overload or short circuit. This protects the current from destroying equipment or, in the case of your home, anything connected to the outlets, such as your refrigerator or computer. After the surge has passed, the circuit breaker can be reset.

In contrast, fuses are not used in modern construction. They are prevalent in older homes and buildings. A fuse is either a high voltage AC or a low voltage DC. It functions like a circuit breaker, but rather than resetting it, it must be replaced manually since it has a metal strip or strand that sparks when an overload or short circuit occurs. This strip melts, and the fuse is extinguished. A fuse is simply less effective and must be changed, but a circuit breaker switch may be quickly reset.

Here you can learn more about the distinctions.

Why do I require an RCD or safety switch if I already have circuit breakers?

A safety switch safeguards you and any other individuals who may come into contact with a defective electrical system or equipment. Circuit breakers are excellent for protecting the installation's cabling. They do not defend the individual. Circuit breakers should be rated according to the cable size installed. We can also verify this for you.

What if my RCD does not function?

It is essential to ensure that your RCD is functioning properly. Before beginning any work on your property, we shall test the RCD to ensure our safety. RCD safety switches degrade and become less responsive with age, but milliseconds can save a life. It is essential to keep your RCD in good operating condition, and if you are unsure, it is advisable to replace it.