Changes made by Pirform's intelligence
Pirform can make the following changes to your certificate based on values that you enter:
Observations added by Pirform's Intelligence
Pirform's Intelligence is able to add the following observations.
| Observations |
|---|
| A TT 3 line system must have a main switch that breaks the neutral conductor. Note 5 from Table 53.2 BS 7671. It can not be guaranteed that the neutral conductor will be at 0v in the event of a fault. |
| A TT system must have a main switch that breaks all live conductors including the neutral conductor. Note 4 from Table 53.4 BS 7671, and Regulation 462.2 It can not be guaranteed that the neutral conductor will be at 0V in the event of a fault. |
| Cables and/or over-current devices have not been selected accordingly, (433, 523 and 533.2.1). Users of the installation may be at risk, and immediate remedial action is recommended. |
| Connection of the lighting protection system has not been carried out in accordance with BS EN 62305, and also has not met the requirements of Regulation 411.3.1.2 of BS 7671 |
| Connection of the lightning protection system has not been carried out in accordance with BS EN 62305, and also has not met the requirements of Regulation 411.3.1.2 of BS 7671 |
| Each installation shall have provision for disconnection from the supply by means of a main linked switch or linked circuit breaker, and be provided as near as practicable to the origin of the installation. It shall also interupt both live conductors of a single phase supply. The requirements of Regulations 462.1 and 462.1.201 have not been met. |
| In a TT system, only copper conductors should be used for earthing conductors: other types of material can only be used if special precautions are taken. See Regulation 543.2.4. |
| In a TT system, only copper conductors should be used for earthing conductors: other types of material can only be used if special precautions are taken. See Section 543. |
| In a TT system, only copper conductors should be used for protective bonding conductors: other types of material can only be used if special precautions are taken. See Regulation 543.2.4. |
| Inadequacies in the intake equipment have been encountered. It is recommended that the person ordering the works contacts the appropriate authority. |
| Incorrect polarity, does not comply to Regulation 643.6. |
| Protective conductors (including earthing and bonding conductors) of 10mm csa or less shall be made of copper. Regulation 543.2.4 has not been met. |
| The combination of the Wiring type and Reference method is inappropriate. See Table 4A2 for suitable combinations. |
| The conductor taken to the lightning protection system has proved not to be continuous along it's length.Connection of the lighting protection system has not been carried out in accordance with BS EN 62305, and also has not met the requirements of Regulation 411.3.1.2 of BS 7671 |
| The impedance for R1 ring continuity seems unusually high, Further investigation should be carried out to ascertaining the reason for the high reading. |
| The impedance for R2 ring continuity seems unusually high, Further investigation should be carried out to ascertaining the reason for the high reading. |
| The impedance for Rn ring continuity seems unusually high, Further investigation should be carried out to ascertaining the reason for the high reading. |
| The installation earth electrode could not be located, further investigation may be required. |
| The installation reference method for the type of cable selected, in conjunction with it's cross sectional area is not allowed. |
| The insulation resistance value for the circuit is below the minimum value required in Table 61. |
| The main protective conductor does not appear to be continuous. Recommend contacting the supply authority. |
| The Main RCD has failed to operate during verification as required by Regulation 643.10 |
| The Main RCD has failed to operate within the verification as required by Regulation 643.10 |
| The main switch for the installation is rated at a lesser value than the main overcurrent protective device for the installation. Recommend upgrading the main switch to an appropriate size. |
| The main switch time delayed (S) type RCD has operated above the recommended tripping times in accordance with Table 3A Appendix 3. |
| The main switch time delayed (S) type RCD has operated below the recommended tripping times in accordance with Table 3A Appendix 3. |
| The maximum permissable earth fault loop impedance has been exceeded. The requirements of Section 41 have not been met |
| The maximum permissible earth fault loop impedance has been exceeded for the circuit. The requirements of Section 41 have not been met. |
| The maximum permitted earth fault loop impedance has been exceeded. The requirements of Table 41.5 have not been met. |
| The maximum recommended earth fault loop impedance has been exceeded, in accordance with Section 1.1, item iv of the On Site Guide, which accompanies BS 7671. |
| The measured earth fault loop impedance has exceeded the recommended value stated at Note 2 beneath Table 41.5 Earth fault loop impedances above 200 ohms are considered unstable, and alternative arrangements should be considered. |
| The measured prospective fault current exceeds the value entered for the main overcurrent device. There is a risk of damage to the installation should a fault occur. Recommend contacting the supply authority to upgrade the main overcurrent device to a more suitable size and type. |
| The overcurrent protective device for the size of cable in use has not been selected in accordance with Appendix 4, in relation to 70oC thermosetting cables only. See Tables 4D1A onwards for a full list of cable current carrying capacities. |
| The phase sequence at the board has not been maintained in accordance with Regulation 643.6. |
| The polarity for the circuit is incorrect. Does not comply to Regulation 643.6 |
| The protective bond conductor taken to the gas intake has proved not to be continuous along it's length. The requirements of Regulation 643.2.1 have not been met. |
| The protective bonding conductor at the gas intake position has proved not be continuous along its length. The requirements of Regulation 411.3.1.2 (ii) have not been met. |
| The protective bonding conductor taken to other services has proved not to be continuous along it's length. The requirements of Regulation 643.2.1 have not been met. |
| The protective bonding conductor taken to the oil intake has proved not to be continuous along it's length. The requirements of Regulation 643.2.1 have not been met. |
| The protective bonding conductor taken to the structural steelwork has proved not to be continuous along it's length. The requirements of Regulation 643.2.1 have not been met. |
| The protective bonding conductor taken to the water intake has proved not to be continuous along it's length. The requirements of Regulation 643.2.1 have not been met. |
| The protective bonding conductor taken to the structural steelwork has proved not to be continuous along it's length. The requirements of Regulation 643.2.1 have not been met. |
| The protective conductor taken to the lightning protection system has proved not to be continuous along it's length.Connection of the lighting protection system has not been carried out in accordance with BS EN 62305, and also has not met the requirements of Regulation 411.3.1.2 of BS 7671. |
| The RCD associated to the board has failed to operate in time in accordance with Table 3A of Appendix 3. |
| The RCD associated to the circuit has failed to operate in time in accordance with Table 3A of Appendix 3 at 5In. |
| The RCD associated to the circuit has failed to operate in time in accordance with Table 3A of Appendix 3 at In. |
| The RCD test button for the circuit has failed to operate under a manual functional test. (612.13.1) Recommend replacing the RCD. |
| The reference method chosen for the cable type is not permitted under Table 4D1A of BS7671. |
| The requirements of Regulation 522.6.202 (i and ii) regarding cables in walls or partitions at a depth of less than 50mm, having protection against nails, screws and the like has not been met. |
| The requirements of Regulation 522.6.202 (i) in relation to additional protection by means of an RCD having the characteristics specified in Regulation 415.1.1, for cables in walls or partitions at a depth of less than 50mm has not been met. |
| The resistance of the installation earth electrode should be as low as practicable. A value exceeding 200 ohms may not be stable. Refer to Regulation 542.2.4. |
| The selection of earthing conductor has not been selected in accordance with Table 54.8. The requirements of Regulation 544.1.1 have not been met. Consideration MUST also be given to the installation methods and type of conductor in accordance with Table 54.1. |
| The selection of main protective bonding conductor(s) has not been selected in accordance with Table 54.8 and the requirements of Regulation 544.1.1 have not been met. |
| The selection of main protective bonding conductor(s) has not been selected in accordance with Table 54.8 and the requirements of Regulation 544.1.1 have not been met. Additional requirements regarding the installation methods of earthing conductors are outside the scope of this software. |
| The selection of protective bonding conductors in a TT system has not been selected in accordance with Regulation 544.1.1. Reference MUST be made to Chapter 52 to meet the additional requirements of installation methods. |
| The time delayed (S) type RCD associated with the circuit has operated above the recommended tripping times at 5In in accordance with Table 3A Appendix 3. |
| The time delayed (S) type RCD associated with the circuit has operated above the recommended tripping times at In in accordance with Table 3A Appendix 3. |
| The time delayed (S) type RCD associated with the circuit has operated below the recommended tripping times at 5In in accordance with Table 3A Appendix 3. |
| The time delayed (S) type RCD associated with the circuit has operated below the recommended tripping times at In in accordance with Table 3A Appendix 3. |
| The time delayed (S) type RCD has operated above the recommended tripping times in accordance with Table 3A Appendix 3. |
| The time delayed (S) type RCD has operated below the recommended tripping times in accordance with Table 3A Appendix 3. |
| The voltage rating of the main switch is not suitable for the system type. Recommend upgrading the main switch to a more appropriate size and type. |
| There is no protective bonding conductor at other services. The requirements of Regulation 411.3.1.2 (iii) have not been met. |
| There is no protective bonding conductor at other services. The requirements of Regulation 411.3.1.2 have not been met. |
| There is no protective bonding conductor at the gas intake position. The requirements of Regulation 411.3.1.2 (ii) have not been met. |
| There is no protective bonding conductor at the gas intake position. The requirements of Regulation 411.3.1.2 have not been met. |
| There is no protective bonding conductor at the oil intake position. The requirements of Regulation 411.3.1.2 (iii) have not been met. |
| There is no protective bonding conductor at the oil intake position. The requirements of Regulation 411.3.1.2 have not been met. |
| There is no protective bonding conductor at the structural steelwork. The requirements of Regulation 411.3.1.2 (v) have not been met. |
| There is no protective bonding conductor at the structural steelwork. The requirements of Regulation 411.3.1.2 have not been met. |
| There is no protective bonding conductor at the water intake position. The requirements of Regulation 411.3.1.2 (i) have not been met. |
| There is no protective bonding conductor at the water intake position. The requirements of Regulation 411.3.1.2 have not been met. |
| This reference method is specifically for the use of flat twin and earth cables in thermal insulation. Current carrying capacities for this type of reference method can be found in Table 4D5. |
Limitations added by Pirform's Intelligence
Pirform's Intelligence is able to add the following limitations.
| Limitations |
|---|
| Insulation resistance tests carried out in accordance with Reg 612.3.3 to prevent damage to any sensitive electronic equipment that may be present in the installation. |
| The earthing conductor material is unknown. |
| The main protective bonding conductor material is unknown. |
| The primary overcurrent device for the installation is unknown. |
| The supply conductor material is unknown. |
| The type of main switch for the installation is unknown due to being inaccessible, or has no identifying marks. |
| Unable to ascertain if other services has been bonded in accordance with Regulation 411.3.1.2 |
| Unable to ascertain if the gas service has been bonded in accordance with Regulation 411.3.1.2 item (ii). |
| Unable to ascertain if the lightning conductor has been bonded in accordance with BS EN 62305. |
| Unable to ascertain if the oil service has been bonded in accordance with Regulation 411.3.1.2 item (iii). |
| Unable to ascertain if the structural steelwork has been bonded in accordance with Regulation 411.3.1.2 item (v). |
| Unable to ascertain if the water service has been bonded in accordance with Regulation 411.3.1.2 item (i). |
| Unable to ascertain the type of earth electrode in use. |
| Unable to carry out suitable inspection of the insulation of non conducting floors and walls in accordance with Regulation 612.5 |
| Unable to carry out suitable inspections and tests for verification of phase sequence in accordance with Regulation 612.12. (This should not be mistaken for phase rotation). |
| Unable to carry out suitable inspections on all barriers or enclosures provided during erection in accordance with Regulation 612.4.5 |
| Unable to carry out suitable tests for all items in the installation for correct polarity in accordance with Regulation 612.6 |
| Unable to carry out suitable tests to verify the functional operation of all devices in accordance with Regulation 612.13 |
| Unable to carry out suitable tests to verify the requirements of Section 525 have been met in relation to voltage drop. |
| Unable to carry out tests for all circuits to ensure the maximum earth fault loop impedance has been satisfied in accordance with Regulation 612.9 |
| Unable to fully inspect main supplementary bonding conductors. |
| Unable to inspect all items for fault protection by separation of circuits in accordance with Regulation 611.3 item (c)(iv) |
| Unable to inspect all items for protection by FELV in accordance with regulation 611.3.(c) (i) |
| Unable to inspect all items for protection by SELV in accordance with regulation 612.4.1 |
| Unable to inspect all items for protection provided by PELV in accordance with Regulation 612.4.2 |
| Unable to inspect the requirements of Regulation 522.6.7 in relation to additional protection being required by a 30mA RCD where Regulation 522.6.6 applies. |
| Unable to isolate installation to carry out a Ze reading. The reading found at Ze in the Nature of supply parameters has been taken as close as possible to the source of the installation. |
| Unable to isolate system to measure the earth electrode resistance. |
| Unable to locate the installation earth electrode. |
| Unable to measure continuity of protective conductors in accordance with Regulation 612.2 |
| Unable to measure insulation resistance between all live conductors in accordance with Regulation 612.3.1 |
| Unable to measure ring final circuit conductors in accordance with Regulation 612.2.2 |
| Unable to reasonably inspect all areas for presence of fire barriers, suitable seals and protection against thermal effects in accordance with regulation 611.3 item (viii). |
| Unable to reasonably inspect all connections in the installation in accordance with Regulation 611.3 item (i). |
| Unable to suitably inspect all barriers or enclosures providing basic protection in accordance with Regulation 611.3 item (viii) (b) |
| Unable to suitably inspect the presence of undervoltage devices in accordance with Regulation 611.3 item (d) (xi). |
| Unable to suitably inspect the proximity of non electrical services and other external influences in accordance with Regulation 611.3 item (d) (xiii). See also Section 528 |
| Unable to suitably inspect all appropriate functional switching devices in accordance with Regulation 611.3 item (d) (x). |
| Unable to suitably inspect all circuits for presence of circuit protective conductors in accordance with Regulation 611.3 item (c). |
| Unable to suitably inspect all erection methods in the installation in accordance with Regulation 611.3 item (d) (xvii). |
| Unable to suitably inspect all items for protection provided by double or reinforced insulation in accordance with Regulation 611.3 item (viii) (a) |
| Unable to suitably inspect all items for protection provided by insulation of live parts in accordance with Regulation 611.3 item (viii) (b) |
| Unable to suitably inspect all obstacles providing basic protection in accordance with Regulation 611.3 item (viii) (b) |
| Unable to suitably inspect cables buried in walls for an earthed armour or sheath, or run in an earthed wiring system for protection against screws, nails and similar in compliance with Section 522, in particular Regulation 522.6.6 |
| Unable to suitably inspect conductor identification in accordance with Regulation 611.3 item (ii). |
| Unable to suitably inspect connection of single-pole devices for switching in line conductor only in accordance with Regulation 611.3 item (v). |
| Unable to suitably inspect correct connection of accessories and equipment in accordance with Regulation 611.3 item (vi). |
| Unable to suitably inspect for electrical separation for more than one item of current using equipment in accordance with Regulation 611.3 item (c) (iv). |
| Unable to suitably inspect for electrical separation for one item of current using equipment in accordance with Regulation 611.3 item (c) (iv). |
| Unable to suitably inspect for the absence of protective conductors where a non-conducting location is in use, in accordance with Regulation 611.3 item (c) (ii). |
| Unable to suitably inspect for the routing of cables in safe zones, or protection against mechanical damage, in compliance with Section 522. |
| Unable to suitably inspect items placed out of reach providing basic protection in accordance with Regulation 611.3 (viii) (b) |
| Unable to suitably inspect particular protective measures for special installation and locations in accordance with Part 7. |
| Unable to suitably inspect presence of labelling for protective devices, switches and terminals in accordance with Regulation 611.3 item (d) (xii). |
| Unable to suitably inspect segregation of safety circuits in accordance with Regulation 611.3 item (d) (xiii) See also Section 528. |
| Unable to suitably inspect selection of equipment appropriate to external influences in accordance with Regulation 611.3 item (d) (xiii). |
| Unable to suitably inspect the presence of diagrams, instructions and similar information in accordance with Regulation 611.3 item (d) (xvi). |
| Unable to suitably inspect the arrangements for alternative source(s) of supply in accordance with Regulation 611.3 item (c). |
| Unable to suitably inspect the presence of danger notices and other warning signs in accordance with Regulation 611.3 item (d) (xv) |
| Unable to suitably inspect the presence of earthing arrangements for combined protective and functional purposes in accordance with Regulation 611.3 item (c). |
| Unable to suitably inspect the presence of RCD's in accordance with Regulation 612.10 |
| Unable to suitably inspect the presence of supplementary bonding conductors in accordance with Regulation 611.3 item (c) (i). |
| Unable to suitably inspect the segregation of Band I and Band II circuits, or inspect that Band II insulation is in use in accordance with Regulation 611.3 item (d) (xiii). See also Section 528. |
| Unable to suitably or reasonably gain access to switchgear and other equipment in accordance with Regulation 611.3 item (d) (xiv). |
| Unable to test the effective operation of RCD's for additional protection in accordance with Regulation 612.10 |
Values set by Pirform's Intelligence
Pirform's Intelligence is able to set the following values.
| Value | Set To |
|---|---|
| Items Inspected Choice And Setting Of Protective Devices | Fail, Limitation |
| Items Inspected Erection Methods | Fail |
| Items Inspected Presence And Correct Location Of Isolation And Switching Devices | Fail, Limitation |
| Items Inspected Presence Of EarthingConductor | Limitation |
| Items Inspected Presence Of Main Protective Bonding Conductors | Fail, Limitation |
| Items Inspected Routing Of Cables In Prescribed Zones | Fail |
| Items Inspected Selection Of Conductors For Current Capacity | Fail, Limitation |
| Items Tested Continuity Of Protective Conductors | Fail |
| Items Tested Earth Fault Loop Impedance | Fail |
| Items Tested External Earth Loop Fault Impedance | Fail |
| Items Tested Insulation Resistance Between Live Conductors | Fail |
| Items Tested Insulation Resistance Between Live Conductors And Earth | Fail |
| Items Tested Operation Of Residual Current Devices | Fail |
| Items Tested Polarity | Fail |
| Particulars Of Installation Main Protective Conductors Equipotential Conductor Continuity Check | Fail |
| Schedule Item 3.1 | Code2 |
| Schedule Item 3.4 | Code2 |
| Schedule Item 3.6 | Code2 |
| Schedule Item 4.6 | Code3 |
| Schedule Item 5.6 | Code2 |
| Schedule Item 5.9 | Code3 |