An RCD, or residual current device, is a life-saving device which is designed to prevent you from getting a fatal electric shock if you come into contact with a live wire or current. RCDs offer a level of personal protection that ordinary fuses and circuit-breakers cannot provide. The majority of our leads have an option to add in an RCD, to provide this invaluable level of protection. An RCD is designed to protect against the risks of electrocution, for example if you cut through a cable and accidentally touched the exposed live wires.
An RCD constantly monitors the electric current flowing through the live and neutral wire. If a fault occurs and the live and neutral current become unbalanced e. Circuit breakers protect property, RCDs protect people. Circuit breakers are found in consumer units. They are specifically designed to trip and cut off the power if too much current flows through a circuit or there is a short circuit.
Unlike RCDs they do not protect against the risk of electrocution, as the current required for them to trip would not be generated in such a situation.
The fuse in a 13A plug operates in the similar manner, providing protection from an overload or short circuit. RCDs in contrast, do not protect against overload or short circuit. It is therefore important that any circuit also has overload protection from an MCB. It is essential to ensure that any extension lead used outside is protected by an RCD. We would always recommend having an RCD as part of the extension lead unless it is 15m or shorter and you are absolutely certain that any sockets to which it will be connected are already RCD protected.
If you are only using the lead at home, then this can easily be checked. However if you plan to use your lead at multiple locations, this is unlikely to be possible. Since any newly installed socket that may reasonably be expected to supply equipment outdoors should be RCD protected. This changed to a requirement for all 13A sockets to be protected from Some of our videos showing you handy hints to save you money around your home.
For peace of mind our services are 'No Touch'. Find out more.. Our Services. Handy Hints. About Us. Contact Us. Search for services in your area. Electrical When to install an rcd. How can we help? Submit Not sure if your home electrical switchboard needs an upgrade or full replacement? We've put together 8 reasons why it could definitely be time to call your electrician and book it in. Updated electrical safety requirements Over the years the electrical safety requirements, Learn More.
Commonly asked smoke alarm questions. Every day on the job our smoke alarm technicians are asked lots of questions by residents about the rules and regulations around smoke alarm installation and maintenance in Queensland. Our electricians have put together this list of answers to commonly asked questions to help ens How to choose a ceiling fan?
The final subcircuit supplying the hot water unit is users the common neutral principle, therefore if a RCBO is used the poles are to be linked clause 2. The number of poles required is three. The RCD uses a core balance principle of operation and providing all poles of the RCD have the same current flow in normal conditions of operation and when a fault occurs an out of balance is detected greater than the required trip current the RCD will operate perfectly. In this case only one active and the neutral is used at any onetime with the other active having zero current thus the RCD operates as required.
Forget your password? Click here. Member Login. Search form Search. All the circuit protection devices are replaced on a switchboard then all the circuits required to be RCD protected shall be RCD protected. When the whole of the switchboard is replaced, then all the circuits required to be RCD protected shall be RCD protected.
Please refer to clause 2. Answer: No, 1. Question 8: When carrying out alterations to a switchboard, where a amp MCB was installed on a 2. Question 7 Clause 2. Answer: When determining what type of electrical equipment or appliance that is permanently connected to supply will cause an increased risk to the user, the following steps are recommended: 1: - only final sub circuits up to and including 32 A are required to be protected with additional protection of an RCD.
Question 6 Do I need to provide the 1m clearance from the end of the open door of the switchboard? Answer: - No, clearance from the end of a switchboard doors in non-domestic and non-residential is are as per clause 2.
0コメント