When installing cable trays, profiled sections and installation ducts, it is important to bear in mind the following: The dimensions of the cable trays must be sufficient, with 50 % spare space, and calculated so as to hold only one layer of cables. 2. Damage to underground electrical cables can cause fatal or severe injury and the law says you must take precautions to avoid danger. The bulleted list below compares these components and their typical uses. Per-lot underground installation cost in the 12-lot areas was estimated at approximately $480, while in the 48-lot area the figure was approximately $180. Subject to provisions for mechanical protection, depth of burial for cables and raceways must comply with Table 53. 2. Sample of HV Enclosure Log Book / HV Padlock Movement Log Book 352 18. Reply to Guitarist. 2 Transmission pipelines 36 A. 5. Underground cables and pipes are essential for the vast majority of commercial and residential buildings, enabling vital utilities such as electricity, gas and water to flow to and from properties, and providing fundamental connections to internet and telephone services. It helps in wildfire prevention and in. For use in all civils, utility and telecommunications sectors. Guidelines for the Planning, Installation and Maintenance of Utility Services in. including coupler and draw-in wire. Safely route and protect cables with CEF's underground ducting solutions. 4. 75mm Twin Walled Cable Duct. 2. 5 Draw-in Pit B3. Please make sure you provide a draw wire or rope within the laid ducting so that we can pull the cable through. Where secondary cable is installed in duct to the lot line, the duct shall be capped until the cable is installed then sealed with a clean rag after cable installation All ducts shall be according to CSA Standard C22. 2. The National Electrical Code (NEC) recommends that non-current carrying. Yellow – Gas, oil, steam, petroleum, or other flammable material. The high-density polyethylene is highly chemical and water resistant and has a compression resistance of higher than 450N. SPEC. 0 bids Ending 9 Jan at 12:38PM GMT 6d Collection in person. To protect against mechanical injury the trench is then covered with bricks and other materials. The common methods of cable laying are: • Direct in the ground in trenches (underground cables). It is therefore no surprise that general electrical installations, accessories and equipment for use within the EU, and their associated harmonised standards, have been developed with these supplyDiscuss Sealing underground ducting in the Electrical Wiring, Theories and Regulations area at ElectriciansForums. 5m underground chambers, that flooded. Where multiple cables share a common duct all cables shall be pulled together to prevent friction damage or jamming. For use with electric cables. 1. S. 5 Underground Wiring conduit movement protection Where subject to. Excellent impact resistance at low temperatures. Electrical cables are covered in table with a minimum depth of 600mm for carriageways and 450mm for footpaths recommended. Cable Trunking. Backfill material for direct buried cables must be screened sand or soil with maximum particle size of 4. 5. Some water authorities allow MDPE to be laid at a shallower depth, depending on circumstances, but must. Ridgiduct is a twin wall cable duct system specified by most of the UK DNO's and regional electricity companies. Rollers shall be used to support the cable and at bends. A truck used to transport personnel, tools, and material for electric supply line work. UPVC Cable Duct Pipes DUCT Pipes are manufactured as per DIN 8062 and BS 3506 standards. A flexible conduit minimum diameter 2" with a. Please make sure you provide a draw wire or rope within the laid ducting so that we can pull the cable through. 2. 2. City Electrical Factors Ltd is a company registered in England & Wales with company number 336408, All Prices Subject to VAT. • Provide pulling irons opposite potential duct entrances. See moree-CFR. (Underground Service Alert) 800-227-2600 . Be configured to protect the electrical grid from disruption from the. is available in five sizes. Wiring ducts, along with conduit, wireways, and cable carriers, are often used as basic components of a cable management system. 75 mm. ’s South Coast on December 20, some. There is an example for multiple cables in ducts in section 4. NJUG Guidelines on the Positioning and Colour Coding of Underground Utilities’ Apparatus NJUG Publication: Volume 1: Issue 8: 29. Run cable under the floor wherever possible, as this gives easier. Where service The 24-Inch Option. pads section v. 3 Distribution pipelines 38The minimum depth for cable laying below the ground varies according to the voltage capacity of the cable. 5m deep and 0. Cable diameter d, giving a cable area, a : a = π 4d2 a = π 4 d 2. •. Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure. g) Provision should be made to permit adequate access for utility plant Gas pipes should be laid a minimum of 300mm (12”) from electricity cables and 250mm (10”) from other utilities apparatus (e. ‘Electric Cable Duct’. AS 4799-2000 Installation of underground utility services and pipelines within railway boundaries . 41. 5 Cable Buried Direct in Ground B3. 179(D) has new. • Electric ducts are installed at the correct depth and position in accordance with the current version of the SWUK Guidelines on the Positioning and Colour Coding of Underground Utilities Apparatus, Volume 1, 29 October 2013. When it comes to laying electric cable underground, there is an extra consideration to be made in your choice of ducting. The sand bed protects the cable from the moisture from the ground. 13. 1926. . If cables are buried in the ground, either direct or inside ducting, reference method D (Figure 1) is applicable and the appropriate value should be selected according to its type from the relevant table identified in Appendix 4. 2 Health and Safety Executive Publication HSG 47, ‘Avoiding Danger from Underground Services’ 5 3. To make the “direct burial” claim, third-party testing and ratings are necessary to verify that the cable has the mechanical properties necessary to. 2. 1 Electrical Distribution Within Explosives Areas 4. 50 incl VAT. Coil Size (Diameter x Height): 1200mm x 300mm. Features & Benefits: Naylor Underground Twinwall Electric Duct Cable - 6m. 4. Wiring ducts are rigid trays typically used as raceways for cables and wires within electrical enclosures. Underground Cables: Electric power can be transmitted or distributed either by overhead system or by underground cables. 8. 5 Siting of Distribution & Supply Equipment 5. All ducts intended for 230 volt The ZElectricity Safety, Quality and Continuity Regulations 2002 [ (ESQCR), Part IV, Underground Cables and Equipment, gives absolute requirements for general restrictions, protective screens and excavations and depths of underground cables. L 2 wire, 480V service Clarified to indicate that it applies to metered service Jan 2010 VI. Cable grouping factors. There are two distinct questions facing the nuclear power industry regarding medium voltage cables subjected to long-term wetted or submergence conditions: 1. system protection chapter 4. 2. 9. 128 attached hereto be and it hereby is adopted. See full list on etechcomponents. The cables are laid in the trench and covered with a 10 cm thick layer of sand. 10. electrical wiring that are applicable to most residential applications. #7. 2 UNDERGROUND CABLE PROTECTION MATERIAL FOR UNAVOIDABLY SHALLOW DEPTHS 11 3. Yet, there are many misconceptions and mistakes when it comes to burying cables underground. Available in. com. I am renovating and extending a rural property and am planning on getting a "my energy libbi" battery and solar system installed once the 3 phase modal and an installer is available. Underground Fuel Tanks; Bunded Fuel Oil. Keep in mind it needs protection from physical damage with Schedule 80 PVC conduit where the cable transitions from above grade to at least 18 inches below finished grade. It Is Ordered that General Order No. 9 sealing ducts and openings 20 6. £29. • Cannot occupy a cabinet, outlet box, panel, or similar enclosure housing the electrical terminations of an electric light, power, or Class 1 circuit — unless the nonconductive optical fiber cable is. In the event of crossing or proximity of underground telecommunication cables and underground power cables, a minimum clearance of 100 mm shall be maintained, or the requirements according to (i) or (ii) shall be fulfilled: (i) A fire-retardant partition shall be provided between the cables, e. f) Appropriate registration of Easements-in-Gross to the line owner’s requirements shall be provided by the landowners prior to livening for all electrical reticulation cables, service boxes and ducting on private property including right-of-ways. The separation between any underground drain or water service pipe with an electrical supply cable shall be at least: a. c. "Cover" refers The reason each pipe is a different colour is purely for safety reasons and to identify which ducting is protecting which type of cable. 5 inch of an energized cable unless tool guards to prevent contact with energized cable are used; and a non. V. Straight joint Breech joint Pot end Main Service Joint 1. 2 of. BURIED ELECTRICAL CABLES BEFORE DIGGING CALL U. Cancel each other out. net. Where underground cables extending to an overhead supply system are intended to be I have to run cable (but not underground) in my case either way from the panel so I have been reading up on it. 3. The separation between any underground drain or water service pipe with an electrical supply cable shall be at least: a. primary chapter 1. Smooth internal bore to prevent tugging of cables. LINE OUTAGE DURATIONS" Buried cables, conduits, and ducts shall be at a sufficient depth to avoid being damaged by any reasonably foreseeable disturbance of the ground" A rule of thumb is in a garden below one and half spade length or below 500mm and under drives and such under between 500-750 mm. in the Electrical Forum area at ElectriciansForums. 2020 NEC Section 805. The illustrations below outline the most common circumstances leading to contact with live electricity cables. We offer a comprehensive range of high quality black and coloured cable ducting and accessories. Just imagine the condition of overhead wires after a severe storm, all torn, damaged, and tangled. 4. It must be SWA cable,or pyrotenex, any other cable must be in conduit and sealed against moisture. Durable and corrugated polyethylene construction. Clear your trench of rocks, clods, and other debris. ” 22. This includes the submission of a connection card(s) and registering with a supplier to enable the installation of the meter(s). below. IEC 60364: Electrical Installations for Buildings. 2. Purpose of this method statement is to outline the sequences and methods of works intended to be used for for laying underground 33 kV power and fiber optic cables including the excavation of trench and backfilling. No conduit or ducting is necessary if you use a Steel Wire Armoured XLPE cable. This is applicable when cable in non-metallic duct is considered as a direct buried cable installation and random. 29 products. Install #4/o bare copper ground cable the length of the duct bank to be used to connect the manholes to grounding system. The supplementary Department for Business Enterprise & Regulatory Reform Have you ever wondered what is underground cable ducting? Perhaps you’re curious about where it’s used or why there are so many types and colour variations of electric. 1. 4 U/G cable found in shallow cover 33 5. Trunking is installed onto a wall or surface as opposed to within it and is also a great way of hiding unsightly wiring from view. • Ducting should be installed at the correct cable depth and a 150mm width tile tape installed 75mm above the service ducting or 100mm above mains ducting to meet the safety requirements of the Electricity Safety, Quality and Continuity Regulations 2002. Said General Order No. Suitable indication shall be provided above a buried cable at a distance of approximately 300mm vertically below. The illustrations below outline the most common circumstances leading to contact with live electricity cables. 3 The HDPE ducts and PP couplers have good resistance to UV degradation, but to avoid damage or deteriorationProducts in Electric Cable Ducting: Showing 1 - 23 of 23 products. 110mm x 50m. 128 attached hereto be and it hereby is adopted. — ESB CABLE/DUCT SAND Trench AFTER carefull backfilling and Ramming Layers all round the cable to be hand tamped. Where electricity. Today, the pylon carries only a switch fed by two underground cables. Protective screens. £19. Polyethylene construction. IEC 60183: Guide to the selection of high -voltage cables. 6/1kV. Cable Duct 100mm (ID), 118mm (OD) Ridgiduct cable duct is suitable for underground cable ducting of low and high voltage power cables, this includes 400/1000 volt, 11kV, 33kV and triplex cables. When you are backfilling the trench, you should place warning tape advising there is a gas pipe below at least 75mm. Naylor 29089 Twinwall Duct 50m x 94/110mm (Orange - Street Lighting)Metal raceways, cable trays, cable armor, cable sheath, enclosures, frames, fittings, and other metal noncurrent-carrying parts that are to serve as grounding conductors, with or without the use of supplementary equipment grounding conductors, shall be effectively bonded where necessary to ensure electrical continuity and the capacity to conduct. 00 - Underground Electric Supply And Communication Lines 50,000 Volts And Below. See electric cable duct stock video clips. Equipment that produces, modifies, regulates, controls, or safeguards a supply of electric energy. The benefits of Polypipe Cable Protection include: Low weight, flexible, durable and high strength. It must have the words ‘Electric Cable Duct’ stamped down the side so it’s easy for anyone coming across it to know exactly what’s inside. Raceways (or Ducts) Below Ground. Marker Tape 24 3. Soil & Vent 60; Access Covers & Gratings 27; Building Steel 13;. • All space alongside the duct. Duct—A closed passage way formed underground or in a structure and intended to receive one or more cables which may be drawn in. 3 The HDPE ducts and PP couplers have good resistance to UV degradation, but to avoid damage or deterioration1. 8. Smooth internal bore to prevent tugging of cables. In June 2017, Furukawa Electric Co. The jackets of PV wire and USE-2 handle extreme UV exposure and are moist-resistant. · 6-inches Deep Burial Depth. the cable manufacturer concerned or some other selected installer. 600mm is the normal depth for any 230v system, including under driveways, but that can be shallower with specific cable protection systems. D. 4. Duct spacers shall be sized for the ducts being held, and shall provide the minimum spacing between ducts required forconcrete flow and by the NEC. Install a metal lined, plastic, 6" wide warning tape 18" above all raceways and duct banks. Black colour for clear identification. 8 Temporary Service. In particular it aims to reduce the chance of damage to underground services whilst also minimises. Electrical. 139 products. 1 Insulating underground cables 04 2 Capital costs for installation of 05 underground cables 3 Underground cable technologies 06 4 Planning and environmental issues for 08 underground cables 5 Land use restrictions over cable routes 09 6 Operation, maintenance, refurbishment 10 and up-rating cables 7 Cable installation methods 11Discuss Trench Depth for underground cable. 2 – Open Wire Drop – (Page 73 and 74)Electric line truck. splices chapter 4. 2. All ducts for underground cables between 230V and 20kV shall be either ‘twin walled’ or ‘single smooth walled’ Underground cables Underground cables are a growing feature of National Grid’s network. In civil engineering, undergrounding is the replacement of overhead cables providing electrical power or telecommunications, with underground cables. Conduit and Conduit Fittings. 13. 1926. Alberta Electrical Utility Code. 1,312 products. Length: 600mm. A2. 00. The cables are pulled into the position from manholes. What is underground cable laying? In areas where space for cables is limited and crunched, especially the urban regions, underground laying of cables is an. The duct must have. The material should be mounted as well. 7, in addition to Table 22 for 250-volt grade cables as seen in Figure 4, this would have been to accommodate the thickness of the. 2m 0. 9 MB) 062111 Application of Underground Distribution Transformers (PDF, 233 KB) 062288 Underground Conduits (PDF, 630 KB)3 Apr 2012. Specification for Electrical Network Project Design Plans). including coupler and draw-in wire. Easy to transport. Connection to the cable shall be via an approved pulling sock. g. Where no physical barrier exists, no duct or cable shall be laid within a distance of 600mm (24 inches) measured horizontally, nor cross within a distance of 300mm (12 inches) measured vertically from any high voltage power cable. References 337 15. and regulations. Duct Pipe Cable Marker Systems Recommended Minimum Depths Carriageway Electricity HV (High Voltage) red duct Black or or tile N/A Red or black Yellow with blackPlastic Utilities Duct for Underground Installations 3. It does not include underground structures such as brick sewers, railway tunnels, etc. Timber floors. Complies with BS EN 61386-24:2010, Type 450N, normal duty impact resistance. Cable total area Ca = sum of area for all cables. IEC 60445: Identification of conductors by colours or numerals. Cable / Duct Marker Warning Tape A length of plastic tape laid above the duct along its entire length indicating the presence of the duct below the tape. Colour: The colour of the pipe shall be Grey / Black or as per customer requirement. UF cable can be direct-buried (without conduit) with a minimum of 24 inches of earth cover. 2. 1 Installation to Comply with Obligations and Regulations A2. Damage to underground electrical cables can cause fatal or severe injury and the law says you must take precautions to avoid danger. From 3 reviews. 4. Substations Substations are found at points on theto the top of the cable, duct or service tube. PV wire comes equipped with an added layer of insulation. . Duct in pathways and grass areas Duct in roadways Case 2:Duct laid to pole Case 3: Duct laid to Mains Cable location Case 1: Duct laid to Minipillar location Pull rope to protrude through. Seals + CouplerBlack in colour for electrical use. Cable to be well supported by firm bed of sand beneath the cable. Full range of fittings and accessories available. 9 meters . . Class 2 - Ducts for underground cables between 230V and 20kV (including LV services) and pilot and. Protect wiring from impact and the environment in runs indoors, outdoors, and underground. Service and mains gas cable (ducting is perforated to allow for gas venting) Blue. The manufacturer’s identity, together with the wording. ENG. The advantages of thermoplastic ducts are: Do not corrode. However, I see some publications that apply these factors to ccts, in trunking, for example, with no reference to cables being equally loaded (as though it's a belt-and-braces approach and apply the. 5 m is usually inadvisable. Cable Ducting and Accessories. 10 The term ‘utility’ is used to describe the owner of a service, and may include an electricity, gas, or. 2 U/G cable found damaged 33 5. In underground cables, when a fault occurs, the cost of finding its location, trenching, cable splicing, and re-embedment is sometimes five to 10 times more expensive than repairing a fault in an overhead line where the conductors are visible, readily accessible and easier to repair. 150/178mm Electric Cable Ducting – 6m (Pack of 4) 150/178mm Electric Cable Ducting – 6m (Pack of 4) Featured Products. HSE. 300mm. 965 (a) Application. 14 Main and Sub-main Switch Room and Electrical Riser Duct/Room Free From Water Service SECTION A4 : OTHER GENERAL REQUIREMENTS. 2 Earthing ArrangementsGeneral purpose ducting (Daviduct) is a cost effective alternative to higher specification systems for use in general light and medium duty applications. If you’re carrying out on-site excavation, you’re responsible for the installation of a black PVC duct from the proposed new meter position to the proposed. telecoms duct and fibre cable. : Flexibility. In these circumstances each cable shall have a separate sock and swivel. However, because the system is all underground, it can be difficult to ascertain. Drainfast stocks a wide range of black electric cable ducting in a variety of sizes, including 40mm, 63mm, 75mm, 90mm, 110mm, 160mm, 150mm, 225mm & 300mm:(Note that, if the underground mains cable is long, it may be a multi-core aluminium conductor requiring a 100 mm duct and swept bend). Conduit Identification Underground service laterals shall have their location identified by a warning ribbon placed in the trench at least 12 inches above the underground installation. 4. 7 is dedicated to separations between underground cables and between underground cables and a wide range of underground installations, such as communication systems, pipelines, tanks, structures, ducts, etc. VIEW PRODUCT. Add to basket. 2m 2. No generator or distributor shall use any of his underground cables and associated equipment (except those in generating stations or substations) which he knows do not comply with regulations 13 and 14. All ducts intended for 230 volt Cable Duct Types. transformers chapter 2. Cables shall also be numbered where they branch off from a main route. Have a decorative appearance. 7 laying of ducts 19 6. 1. Depth 450mm. There should also be a warning tape bearing the legend "DANGER ELECTRIC CABLE" laid directly above the duct, but only 150mm below pavement level. All underground service conduits must be drained at the building entrance as per the BC Electrical Code. A lightweight, high strength Twin Walled main duct system providing excellent protection for electrical cables when installing through walls and for fast underground installation. Wide range of types and sizes available. 100mm for water service pipe not greater than DN65, provided the electrical supply cable is indicated along its length with orange marker tape complying with AS/NZS 2648. Pollution Prevention Guidelines (PPG20). These versatile ducts allow for adaptable routing of various utilities, ensuring optimal. C. Length: 50m. • Ducts are clean and free from any material likely to damage the cable when pulled in. A trench of about 1. Guidelines for Underground Utility Installations Crossing Highway Rights-of-Way March 2013 3 2. 16 18. We always think ahead, being one. 1 and 512. Manufactured from polyethylene. But Table C1 of the on site guide states that twin and earth is "For use underground in conduits or. £110. 3 Doubt about identification of cables amongst different 33 utilities 5. have been laid. Direct laying. 5 California Public Utilities Commission (CPUC), General Order 128, Rules for. and regulations. When running a gas main supply pipe underground the HSE specifies it should be at least 750mm deep in a verge or road, but 600mm deep for a footpath. For the sake of this test, let us say our configuration is exactly like DET6 below, that we can use an ampacity table which is handy:The reports are still available and can be purchased here. 50mm/63mm smooth wall tube with FREE caution tape. General design requirements outlined for new residential subdivisions, CBD projects,Electroplast Dutchclamp Coverall Two-Part Cable Duct is a practical solution for optimal protection and identification of cables and wires! View Product. Then the trench is covered with a 10 cm thick layer of fine sand. 3 Doubt about identification of cables amongst different 33 utilities 5. separate duct couplings to be marked where this is impractical. Duct: A closed passageway formed underground or in a structure and intended to receive one or. Pipes may be of stoneware, fibre, steel, wrought iron. The conductor is enclosed by an insulating system (dielectric) whose main component is made of plastic, for example. Corrugated exterior for strength. Projected number of cables assuming 1800 pairs of cable will be placed: 15000/1800 = 9, which requires 9 conduits. Enter postcode for local availability. 4 Cable Enclosed in Duct B3. High voltage electric cable. The employer shall ensure that employees use a ladder or other climbing device to enter and exit a manhole or subsurface vault exceeding 1. The Twelfth Edition of the IEE Wiring Regulations in 1950 saw the introduction of Table 23 for 660-volt grade vulcanized-rubber-insulated and taped or taped and braided or p. Ridgiduct Power 100mm, 125mm and. These clearance distances are for along the entire length of the service pipe and must be taken into account when the trench is being excavated. 9. Recommended standards for new underground electricity cable installations 33 on new developments and in existing roads and streets Colour marking and strength specification of ducts for underground electricity cables 33 Appendix 2 Gas pipelines 36 A. Type UF cable normally requires 24 inches of cover. 14. £170. 2 Drawing-in of Cables B3. It also applies to Extra Low Voltage (ELV) ranges and Low Voltage (LV. Ridgiduct Power 100mm, 125mm and. Regulation 522. It outlines the potential dangers of. 1. e. 2. Buy Cable at Screwfix. around duct 13. A range The aim is that buried electrical wiring be adequately protected from potential damage by being buried to a minimum depth in the ground as required in Table 53. Self-lay - United UtilitiesThis document provides guidance and information for developers and self-lay providers who want to install water mains and services on new developments. In February 2018, we added two large-diameter sizes for a total of five sizes. Click & Collect. 3 Park Avenue, New York, NY 10016-5997, USAIdeally the gas pipe connection will run down in a gentle gradient away from the building requiring gas towards the main. Residential Electrical Code Examples for Underground. Construction Information Sheet No 47 (Avoiding Danger from Underground. Keywords: acceptance testing, cable, cable installation, cable selection, communication cable, Underground cables and raceways shall be installed in accordance with rule 12-012 underground installations. NEC 300. It may be difficult to sleeve the existing cable. In addition, Regulation Group 527. An underground power cable is under the ground and so maintenance costs are quite less as the wire is safe from potential damage. 75mm Twin Walled Cable Duct. Photos courtesy Electrical Safety Authority (ESA) By Patrick Falzon, C. 10 of BS 7671 for more information. Ducts laid for cable installation must include draw ropes. VAT. TECHNICAL DETAILS: Length: The standard length shall be 6m with socket or as per customer requirement. Direct-buried cable and cable in duct not part of a conduit system1STec 10m Underground Cable Conduit Ducting Hose Pipe Channel for TV Coax, Electric Wire, Garden Lights, Fish Pond Low Voltage Pumps, Power Socket Lead Burial (10 Metre, 20mm External 14mm Internal) 272. Nonconductive optical fiber cables are permitted to occupy the same tray or raceway with power conductors and Class 1 circuits. Electric cables can be run in ducts. 2. electrostatic effects: underground cables have no electrostatic effects initiated by. The allowable wiring methods for electrical installations shall be those listed in Table E3801. Running wire through Schedule 40 PVC conduit. 45m wide trench which is then covered with a layer of sand. Minimum duct diameter D: D = 4Ca πk−−−√ D = 4 C a π k. Delivery. Underfloor duct is ideal for hotel, retail, casino, and convention center applications. ducts or use pre-formed bends supplied by Openreach. Daviduct is manufactured to traditionally accepted dimensions but do not. (4) An earthed PELV conductor is blue. Prevent a short circuit. Damage to underground electrical cables can cause fatal or severe injury and the law says you must take precautions to avoid danger. Please allow 2-3 working days for delivery. 128 shall apply to all underground electric supply and communication systems coming within the jurisdiction of this Commission, and shall be effective on December 1, 1967. (3) Only the middle wire of three-wire circuits may be earthed. Class 2 Electric Cable Ducting; Class 3 Electric Cable Ducting; Gas Pipe Ducting; 60mm Perforated Gas Ducting;. Yes, the electrical code requires that AC currents carried in electrical cables be equal, i. High resistance to corrosion. Complies with Highways Regulations for compression strength. c. Ducts may be of stoneware, cement concrete. Electric cables can be run in ducts. See Regulation 522. Underground box covers that. g.