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PART SEVEN SPECIAL INSTALLATIONS OR LOCATIONS CHANGE Additions and reorganisation 543 […] high protective conductor currents now section 543 559 Highway.

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Presentation on theme: "PART SEVEN SPECIAL INSTALLATIONS OR LOCATIONS CHANGE Additions and reorganisation 543 […] high protective conductor currents now section 543 559 Highway."— Presentation transcript:

1 PART SEVEN SPECIAL INSTALLATIONS OR LOCATIONS CHANGE Additions and reorganisation 543 […] high protective conductor currents now section 543 559 Highway power supplies […] now section 559

2 Part 7 Special Installations and Locations Major changes:- Greatly expanded Bathrooms :- No zone 3, RCD’s required to all circuits Swimming pools:- Zones now numbered, fountains inc. Construction/Agriculture:- no 0.2 sec. disconnection Caravan parks:- changes

3 Section 700 GENERAL Section 701 LOCATIONS CONTAINING A BATH OR SHOWER Section 702 SWIMMING POOLS & OTHER BASINS Section 703 ROOMS & CABINS CONTAINING HOT AIR SAUNAS Section 704 CONSTRUCTION & DEMOLITION SITE INSTALLATIONS Section 705 AGRICULTURAL AND HORTICULTURAL PREMISES Section 706 CONDUCTING LOCATIONS WITH RESTRICTIVE MOVEMENT Section 708 CARAVAN / CAMPING PARKS & SIMILAR Section 709 MARINAS & SIMILAR LOCATIONS Section 710 MEDICAL LOCATIONS (RESERVED)

4 Section 711 EXHIBITIONS, SHOWS & STANDS Section 712 SOLAR PHOTOVOLTAIC (PV) SUPPLIES Section 717 MOBILE OR TRANSPORTABLE UNITS Section 721 […] CARAVANS & MOTOR CARAVANS Section 740 TEMPORARY […] FAIRGROUNDS […] Section 753 FLOOR & CEILING HEATING SYSTEMS

5 Questions asked on special locations - go straight to that section and scan

6 Section 701 Locations containing a bath or a shower Section 702 Swimming pools & other basins Section 703 Rooms & cabins containing sauna heaters Section 704 Construction & demolition sites Section 705 Agricultural & horticultural premises Section 706 Conducting locations with restricted movement Section 708 […] installations in caravan/camping parks […] Section 709 Marinas & similar locations Section 711 Exhibitions, shows & stands Section 712 P.V. power supply systems Section 717 Mobile or transportable units Section 721 […] caravans & motor caravans Section 740 Temporary […] fairgrounds […] circuses Section 753 Floor & heating systems

7 SECTION 701 LOCATIONS CONTAINING A BATH OR SHOWER

8 ZONE 0 Interior of bath/shower (if no basin 0.10m high) ZONE 1 2.25m or height of water outlet ZONE 2 0.6m external to zone 1 ZONE 3 REMOVED 701.32.2 701.32.4 701.32.2 to 701.32.4 701.32.3 Space under basin :- ZONE 1, If only accessible by tool OUT OF ZONES 701.32.3 For showers with no basin there is no zone 2, but an extended zone 1 up to a horizontal measurement of 1.2m FOR DETAIL SEE DIAGRAMS IN BS7671 Page 168-169

9 EXTRACTS

10 Supplementary bonding required, can be in proximity. Can be omitted if RCD’s & protective equipotential bonding in situ External influences 701.512.2 Activity What are the MINIMUM IP codes for Zone 0 Zone 1&2 IPX7 IPX4 IPX5 Where water jets IPX5 Additional protection by RCD’s 701.411.3.3 Provided for all circuits of the location Electrical separation701.413 Electrical separation 701.413 For 1 item of equipment or 1 single socket SELV PELV 701.414.4.5 To have basic insulation Additional protection 701.412.2

11 Switchgear 701.512.3 Switchgear 701.512.3. ZONE 0 No switchgear permitted ZONE 1 SELV switching only ≤ 12V a.c. (source outside zones) ZONE 2 SELV switching & socket-outlets as above and shaver outlets to BSEN 61558-2-5 Socket-outlets prohibited within 3m of zone 1 Current using equipment 701.55 ZONE 0 Fixed, permanent connection, SELV & to relevant standard ZONE 1 Allowed:-Whirlpool units, Showers, Pumps, SELV, Fans, Towel rails, Water heaters, Luminaires

12 If under floor heating is employed it must have an earthed metallic grid or sheath unless SELV 701.753 701.753

13 SECTION 702 SWIMMING POOLS & OTHER BASINS Applies to fountains, paddling pools

14 Zones changed from alphabetical to numeral Zone 0 The interior of the basin Zone 1 2m from the rim of the basin and a height of 2.5m Zone 2 1.5m external to zone 1 No zone 2 for fountains702.32

15 VOLUME ZONE 0 IPX8 ZONE 1 ZONE 2 1.5m ZONE 1 IPX4 (IPX5) 2.5M WATER JET CLEANING ZONE 2 IPX4 (IPX5 OUTDOOR) (IPX2 INDOOR) 1.5m 2.0m 2.5m A Zones and external influences

16 Swimming Pools ZONE 0,1,2:- Every exposed & extraneous conductive part connected by supplementary protective bonding 702.411.3.3 ZONE 0 1:- No switchgear allowed (exemptions apply to zone 1 702.55.4), no socket-outlets (exemptions apply) 702.53 Only necessary wiring 702.522.22. No joint boxes unless SELV 702.522.24 ZONE 2:- Socket-outlet permitted if SELV or Automatic disconnection of supply with RCD or Electrical separation Underwater luminaires to relevant standards 702.55.2

17 SECTION 703 ROOMS & CABINS CONTAINING SAUNA HEATERS

18 ZONE 1 Only the heater and directly associated equipment to be installed. ZONE 2 No special requirements for heat resistance. ZONE 3 Equipment suitable for 125°C Cables 170°C All switchgear other than the thermostat and the thermal cut-out to be installed outside the sauna 1m 0.5m 3 2 1 1

19 SECTION 704 CONSTRUCTION & DEMOLITION SITE INSTALLATIONS Applies to:- 704.1.1 New Building Construction, Repairs Alterations Extensions, Engineering Construction, Earth Works, Similar Works 704.1.1

20 NO 0.2 DISCONNECTION TIMES Socket-outlets & hand held equipment up to 32A protected by reduced low voltage (110V) or automatic disconnection of supply with a 30mA RCD or electrical separation or 704.410.3.10 SELV, PELV 704.410.3.10 Over 32A – 500mA RCD 704.411.3.1 TN-C-S not to be used (unless fixed building) 704.411.3.1 704.522.8.10 Cables not run across roadways unless adequately protected 704.522.8.10 Reduced low voltage cables 300/500V thermoplastic. 704.522.8.11 Higher voltage cables HO7 RN-F abrasion & water resistant 450/750V 704.522.8.11

21 Distribution equipment to BSEN 60439-4 704.511.1 Plugs/sockets ≥16A to BSEN 60309-2 704.511.1 704.537.2.2 To incorporate suitable devices for switching & isolation (lockable) 704.537.2.2 Site Incoming Unit Mains Distribution Unit Transformer Units Outlet Units Extension Outlet Units

22 SECTION 705 Agricultural & Horticultural Premises

23 NO 0.2 DISCONNECTION TIME Automatic Disconnection of supply 705.411 Circuits with socket-outlets ≤ 32A - 30mA RCD Circuits with socket-outlets > 32A - 100mA RCD All other circuits - 300mA RCD Additional protection 705.415.2.1 Locations with livestock to contain supplementary bonding to inc. the metal floor grid Where no metal grid installed – TN-C-S not recommended

24 Protection against thermal effects 705.42 705.33 Heaters - fixed and away from combustible material & livestock 0.5m or manufacturers instruction. Visual on-off position 705.33 For fire protection 300mA RCD, S type on circuits not containing socket-outlets External influences 705.512.2 Equipment to have Min. IP44 Accessibility 705.513 Equipment inaccessible to livestock Identification 705.514 Documentation to include Equipment location plan Routing of concealed cables Distribution flow diagram Equipotential bonding

25 Wiring systems 705.52 Inaccessible to livestock or suitably protected Where vehicles operate buried 0.6m with mechanical protection cultivated land - 1m suspended cables 6m high Conduit/trunking systems 705.522.16 where livestock kept external influences – AF4 conduit (corrosion) :- class 2 – indoor, class 4 – outdoor where vehicles operating external influences – AG3 conduit (impact) :- 5J

26 Isolation 705.537.2 equipment installed where it will not be impeded by livestock, clearly marked, break all live conductors Protective bonding conductors 705.544 shall be protected against mechanical damage, corrosion, & electrolytic effects 705.55 Socket-outlets and luminaires to comply with appropriate standards, IP codes, and limiting temperature 705.55 Safety services 705.56 Where high density livestock rearing exists, food, water, temperature & ventilation:- suitably designed, installed and monitored with standby supplies if required.

27 SECTION 706 Conducting locations with restricted movement (name change)

28 Appropriate measures for protection Automatic disconnection of supply – supplementary bonding SELV, PELV Class II equipment with additional 30mA RCD Electrical separation – one item of equipment

29 SECTION 708 Electrical installations in caravan/camping parks Only TN-S systems to be used for supplies 708.411.4 TN-C-S may be used for fixed site buildings, for supplies other earthing arrangements to be considered i.e. T-T 708.411.4

30 Plugs & socket-outlets 708.553.1 0.5-1.5m No more than 4 sockets at any one point,1 per pitch Equipment to AD4, AE2, AG3 Individual RCD protection & overcurrent protection BSEN 60309-2 IP44 16A min. 20m max. Underground cables 0.6m Overhead 3.5 or 6m

31 SECTION 709 Marinas & similar locations Only TN-S systems to be used for supplies 709.411.4 TN-C-S may be used for fixed site buildings, for supplies other earthing arrangements to be considered i.e. T-T 709.411.4

32 Plugs & socket-outlets 709.553.1 0.3 - 1m No more than 4 sockets at any one point,1 per craft 709.531.2 Individual RCD protection 709.531.2 BSEN 60309-2 up to 63A Generally 16A IP44* Close to craft External influences 709.512 Water:- splashes AD4, IPX4 jets AD5, IPX5 waves AD6, IPX6 AE2, IP3X. AF2. AG2

33 709.3 Connection notice to be supplied 709.3 page 196

34 SECTION 711 Exhibitions, shows & stands 711.411.4 Only TN-S systems to be used for supplies 711.411.4 Accessible metallic parts to have protective equipotential bonding 711.411.3.1.2 711.411.3.3 All circuits, except emergency lighting, on 30mA RCD 711.411.3.3 711.422.4.2 Equipment that generates heat to be suitably guarded, installed, as not to cause danger 711.422.4.2 711.51 Switchgear in locked cabinet 711.51

35 Wiring systems 711.52 Cables to be mechanically protected i.e. armoured, conduit Min. c.s.a. 1.5mm 2 Flexes not in accessible areas unless protected If no fire alarm system installed in the building that is housing the show – flame retardant cable to be used 711.526.1 Joints to be avoided where possible 711.526.1 711.537.2.3 Every separate structure to have isolation 711.537.2.3 711.55.7 Adequate number of socket-outlets for safety reasons 711.55.7 711.559.4.3 Insulation piercing lampholders for festoon lighting to be compatible with cable and non-removable 711.559.4.3 Luminaires below 2.5m to be firmly fixed

36 SECTION 712 Solar photovoltaic (PV) power supply systems 712.410.3 PV equipment on the d.c. side considered to be energised at all times 712.410.3 712.412 Protection by class II preferred for d.c. side 712.412 712.434 PV cables protected against short-circuit currents by appropriate device 712.434 712.444.4.4 Wiring loops short (lightning strikes) 712.444.4.4

37 Equipment & wiring systems selected for external influences712.522.8.3 Switch disconnectors to be supplied for d.c. side 712.537.2.2 Suitable warning notices fitted 712.537.2.2

38 SECTION 717 Mobile or transportable units 717.1 Applies to mobile vehicles & transportable containers/cabins NOT generating sets, caravans, vehicle electrics 717.1 717.411.1 Automatic disconnection of supply by RCD 717.411.1 712.411.3.1.2 Accessible conductive parts to be connected through main protective bonding (fine stranded H05V-K0 712.411.3.1.2 712.414.4 Effectiveness of TN-C-S system to be ascertained 712.414.4

39 717.411.6 An IT system may be provided (with exceptions) 717.411.6 717.514 Notices shall be available near the incoming supply to state the characteristics 717.514 Wiring systems 717.52 Supply flexes to H07RN-F min. c.s.a. 2.5mm 2 Internal wiring – singles in conduit – multi-core installed appropriately No equipment or wiring to run through gas cylinder storage areas except ELV controls if unavoidable 500mm high, gas tight conduit- AG3 Supply connections to BSEN 60309-2 IP44 Diagrams page 206-207

40 SECTION 721 Electrical installations in caravans & motor caravans Installation voltages:- a.c. :- not to exceed 230V single-phase 400v single-phase 721.313 d.c. :- not to exceed 48V 721.313 This section has an annex for guidance on ELV d.c. installations page 214

41 No1 721.55 No1 BSEN 60309-2 IP 44 1.8m FROM GROUND. SUPPLY CABLE max. 25m (+ 2m) 721.55 No2 No2 VOLTAGE,FREQUENCY LABEL No3 721.411, 721.43, 721.53 No3 MAIN SWITCH/RCD WITH APPROPRIATE PROTECTIVE 721.411, 721.43, 721.53 No4721.514 No4 NOTICE STATING METHOD OF CONNECTION TO SITE SUPPLY 721.514 No5 721.411, 721.521 No5 CABLE – STRANDED Min. 1.5mm 2, P.C. INSTALLED TROUGHOUT SUPPORTED FOR FLEXING (AH) 0.4m vertical 0.25m horizontal 721.411, 721.521 No6 721.55.2.4 No6 LUMINAIRES PREFERABLY FIXED DIRECT, PENDANTS TO HAVE SUPPORT IN TRANSIT 721.55.2.4 No7 721.411.3.1.2 No7 ACCESSIBLE METALLIC PARTS CONNECTED THROUGH MAIN PROTECTIVE BONDING 721.411.3.1.2 No8 No8 LPG AS SECTION 717 8 8

42 SECTION 740 Temporary electrical installations for […] fairgrounds, amusement parks & circuses Supply voltages:- 230/400v a.c. 440v d.c. 740.411.4 TN-C-S not to be used 740.411.4 740.41 300mA time delay RCD at origin, 30mA RCD for lighting, socket-outlets & mobile equipment up to 32A 740.41 Bonding required for metalwork where animals are kept 740.51 Switchgear in cabinets accessible with key 740.51 Equipment Min. IP44

43 740.52 Cables installed in public areas, underground & over walkways to be suitably mechanically protected, conduit – class 3, where movement exists – flexible. 740.52 740.526 Joints to be avoided 740.526 740.537 Each booth/stand to have its own isolator disconnecting all live conductors 740.537 Equipment 740.55 Luminaires:- suitably IP rated, fixed if below 2.5m, guarded, fitted to avoid heat concentration Socket-outlets:- 1 per m 2, outside - BSEN 60309-2 Supplies:- permanently marked, labelled, with characteristics Inspected & tested740.6 Inspected & tested after each site assembly 740.6

44 SECTION 753 Floor & ceiling heating systems 753.411 30mA RCD for automatic disconnection of supply even class II 753.411 to avoid unwanted tripping load limited to 7.5kW at 230V Appropriate design, manufacturers instructions to be followed to limit surface temperature & overheating 753.512.2 Ceiling heating to IPX1, floor to IPX7 753.512.2 753.514 Plans and instructions to be provided 753.514 753.515 Elements not to cross expansion joints 753.515


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