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The Electrical Installations and Electrical Equipment ...
DEPARTMENT OF PUBLIC WORKSSTANDARD SPECIFICATIONFOR Electrical INSTALLATIONSAND Electrical EQUIPMENTPERTAINING TOMECHANICAL SERVICESPRETORIA:OFFICE OF THE DIRECTOR:ENGINEERING SERVICESISSUE 1X aDECEMBER with with the Department of to Electrical Connections of conduit in Trays and Insulated Insulated Armoured of Channels (Trunking) AND CONTROL of Surface Mounted of Floor Standing and Non-Essential STARTERS AND MOTOR CIRCUIT of Fault Circuit Protection of Circuit Protection of Circuit Protection of Overload Circuit Protection of Protection for Circuit of clad Air Circuit Breaker, Withdrawable Case Circuit Leakage Fault-Making Fuse switch and Fuse Lightning Selector Switch ' Selector Selector Time Demand Lights67 APPENDIX A : DUTY CATEGORY FOR CONTACTORS68 APPENDIX B : CLASS OF PROTECTION69 DRAWINGS:The following drawings form part of this Specification:ME 700A/20: Example of small control boardsME 700A/21: Example of large control boardsME 700A/22: Circuit Diagram41.
7. SWITCHGEAR 55 7.1 Metal Clad Air Circuit Breaker, Withdrawable Type 56 7.2 Moulded Case Circuit Breaker 56 7.3 Earth Leakage Relays 57 7.4 On-load. Fault-Making Switches 58 7.5 Rotary switches 58 7.6 Microgap Switches 58 7.7 Combination Fuse switch units 59 7.8 Fuses and Fuse Holders 59 7.9 Contactors 60 7.10 Indoor Lightning Arresters 61 8.
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