I will be siting for an exam for the electrical license soon and from a past paper I've got the difficulty of what are the three types of MCB. Does an RCD is under the MCB cathegory?
B is 3-5 times nominal rating Magnetic fast Trip.
C is 5-10 times nominal rating Magnetic fast Trip.
and D is 10-20 times nominal rating Magnetic fast Trip.
The Thermal Bimetal Strip tripping action is broadly the same in all three types.
An RCD is a sort of circuit breaker which detects out of balance currents between live and neutral, such as someone getting a shock etc, and trips out when a certain level of current imbalance is reached.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local