Decision on 17th Edition & RCD's.
- Thread starter securespark
- Start date
All of the RCBOs are B type and as Adam has said the options are still very limited (although I'm not sure when I would need a C or D type at home)
Current set up:
100amp TT incomer.
Meter tails into a 10way (plastic) din make up board located near the meter.
Mains switch is a 100amp 100mA type S RCD with outgoing bus bars feeding 4no 63amp DP MCBs
4no 16mm 3core SWAs, one feeding the RCBO power board, one feeding the MCB lighting and non RCD stuff, one feeding the RCBO board located in the garage for out buildings and one feeding another RCBO board for pond and other stuff.
Adam, can you check if my design meets the requirements of 314-01-01
Current set up:
100amp TT incomer.
Meter tails into a 10way (plastic) din make up board located near the meter.
Mains switch is a 100amp 100mA type S RCD with outgoing bus bars feeding 4no 63amp DP MCBs
4no 16mm 3core SWAs, one feeding the RCBO power board, one feeding the MCB lighting and non RCD stuff, one feeding the RCBO board located in the garage for out buildings and one feeding another RCBO board for pond and other stuff.
Adam, can you check if my design meets the requirements of 314-01-01
Some reading on double and single pole isolation from the ESC Technical Manual.
5.3 Number of poles of protective devices
It is generally sufficient for overcurrent protective devices and RCDs to be of the single-pole type (inserted in phase conductors). However, there are exceptions, some of the main ones of which are given in items 5.3.1 and 5.3.2:
5.3.1 Applications where a linked multipole device which disconnects all phase conductors is required
Examples of where a circuit-breaker or RCD must be of the multipole type disconnecting all phase conductors are:
• An RCD used in a circuit having more than one phase conductor (Regulation 531-02-01 refers).
• In a circuit supplying a multi-phase motor (eg three-phase), if necessary in order to avoid ‘single-phasing’ of the motor.
• Where used as a means of switching off for mechanical maintenance, if necessary in order to avoid the risk of burns or injury from mechanical movement.
5.3.2 Applications where a linked multipole device which disconnects all phase conductors AND the neutral conductor is required
Examples of where a circuit-breaker or RCD must be of the multipole type which disconnects all phase conductors and the neutral conductor are:
• The overcurrent protective device of each final circuit in a caravan or motor caravan (Regulation 608-04-01 refers).
• Where selected as a main switch for operation by unskilled persons for a single-phase supply, such as in a household or similar installation (Regulation 476-01-03 refers).
• Where selected as a means of isolation in an installation forming part of a TT system (Regulation 461-01-01 refers). • Where required by BS EN 60079-14 for an installation in a potentially explosive atmosphere, in order to avoid the possibility of incendive sparking.
On the data sheet for the Merlin Gerin single pole C60H RCBO it says "do not use on installations which require double pole switching eg. IT or TT systems"
Johnd, do you still have a data sheet for the MEM single pole RCBOs?
5.3 Number of poles of protective devices
It is generally sufficient for overcurrent protective devices and RCDs to be of the single-pole type (inserted in phase conductors). However, there are exceptions, some of the main ones of which are given in items 5.3.1 and 5.3.2:
5.3.1 Applications where a linked multipole device which disconnects all phase conductors is required
Examples of where a circuit-breaker or RCD must be of the multipole type disconnecting all phase conductors are:
• An RCD used in a circuit having more than one phase conductor (Regulation 531-02-01 refers).
• In a circuit supplying a multi-phase motor (eg three-phase), if necessary in order to avoid ‘single-phasing’ of the motor.
• Where used as a means of switching off for mechanical maintenance, if necessary in order to avoid the risk of burns or injury from mechanical movement.
5.3.2 Applications where a linked multipole device which disconnects all phase conductors AND the neutral conductor is required
Examples of where a circuit-breaker or RCD must be of the multipole type which disconnects all phase conductors and the neutral conductor are:
• The overcurrent protective device of each final circuit in a caravan or motor caravan (Regulation 608-04-01 refers).
• Where selected as a main switch for operation by unskilled persons for a single-phase supply, such as in a household or similar installation (Regulation 476-01-03 refers).
• Where selected as a means of isolation in an installation forming part of a TT system (Regulation 461-01-01 refers). • Where required by BS EN 60079-14 for an installation in a potentially explosive atmosphere, in order to avoid the possibility of incendive sparking.
On the data sheet for the Merlin Gerin single pole C60H RCBO it says "do not use on installations which require double pole switching eg. IT or TT systems"
Johnd, do you still have a data sheet for the MEM single pole RCBOs?
like this?
http://www.memonline.com/f111.html
that one URL has several links in it, but they all show the same address
they call their website memonline, presumably to make it difficult to find
some more literature is on http://www.memonline.com/publications/
http://www.memonline.com/f111.html
that one URL has several links in it, but they all show the same address
they call their website memonline, presumably to make it difficult to find
some more literature is on http://www.memonline.com/publications/
)
DIYnot Local
Staff member
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.
Are you a trade or supplier? You can create your listing free at DIYnot Local
