ESSENTIAL DETAILS TO BE INCORPORATED IN SCHEMATIC …

1 ESSENTIAL DETAILS TO BE INCORPORATED IN SCHEMATICSINGLE- line diagrams FOR electrical INSTALLATION1. Standard graphical symbols complying with CP 83 Pt 2: 2000 to be Single- line drawing shall be printed on A3 sized paper (minimum) and shall bedisplayed in the consumer's main intake switchroom or near the main intakeswitchboard. The soft copy of the single- line drawing for submission to EMA viathe Internet shall be in: jpg, pdf, gif or tif format for scanned images or dwg, dgn or dxf format for Computer Aided Drawings.

2 Title Block to haveName of electrical Owner of electrical installation and his correspondence Location / Address description of electrical Drawing Number and amendment reference, if Name, Licence Number, Signature of LEW and Contact telephone number and / or pager number of LEW2. Incoming *Type and rating to the relevant IEC / BS Standards ( current carryingcapacity, short circuit capacity, protective current Transformer DETAILS , busbarsize, etc) of incoming Approved setting for overcurrent and earth fault Type and rating of all outgoing switchgears, including spare(s), if Position of metering equipment, where *Interlock facility for standby generators or other sources of Earthing system arrangement with earthing conductor size indicated3.

3 Out-going Type, size, and where practicable, length of cables *State size of circuit protective conductor, if separate and not in the samecomposite cable4. Sub-switchboards and distribution Name or label all sub-switchboards and distribution State the estimated after diversity maximum *Specify equipment for means of isolation, overcurrent and earth fault / *Specify type / rating / sensitivity of RCCB used for protection of final State number of and rating for the final circuitsLegends:LEW - Licensed electrical WorkerRCCB - Residual Current Circuit-Breaker*Basic safety features(Updated.)

4 14/05/2004) ESSENTIAL DETAILS TO BE INCORPORATED IN SCHEMATICSINGLE- line diagrams FOR SUPPLY INSTALLATION1. Standard graphical symbols complying with CP 83 Pt 2: 2000 to be Single- line drawing shall be printed on A3 sized paper (minimum) and shall bedisplayed in the consumer's main intake switchroom or near the main intakeswitchboard. The soft copy of the single- line drawing for submission to EMA viathe Internet shall be in: jpg, pdf, gif or tif format for scanned images or dwg, dgn or dxf format for Computer Aided Drawings.

5 Name of Supply installation and site Licensee s name and Name, Licence Number, Signature of LEW and Drawing number and amendment reference (if applicable) Contact telephone number and / or pager number of Generator capacity (not less than declared load capacity)2. Earthing Size of protective conductor for earthing of neutral point / star Size of earthing conductor for Connection of earthing points (minimum 2 points connected in ring)3. Means of Isolation and Protection at Generator Means of isolation provided at generator Short circuit protection for supply Supply cable size and method of installation4.

6 Main Intake Switchboard (MSB) / Main Type, current carrying capacity and short circuit of incoming circuit Overcurrent protection at Earth fault / earth leakage protection at Indicator lights or ammeter and voltmeter at MSB / main Type and current rating of change-over switch (4-pole type), if Type, current carrying capacity and short circuit capacity of out-going Out-going submains sizes and methods of installation5. Final Current rating of busbar / BI Conductor size and method of installation indicated for all final Sizing of circuit breaker appropriate for equipment connected to final RCCBs of 30mA s tripping sensitivity for all final circuits RCCBs of 100mA s tripping sensitivity for all final circuits > CB provided for phase conductor teed-off more than 3m from busbarsLegends.

7 LEW - Licensed electrical WorkerRCCB - Residual Current Circuit-BreakerDB - Distribution Board(Updated : 14/05/2004)