CERTIFICATE OF ACCREDITATION

CERTIFICATE OF ACCREDITATION In terms of section 22(2) (b) of the Accreditation for Conformity Assessment, Calibration and Good Laboratory Practice Act, 2006 (Act 19 of 2006), read with sections 23(1), (2) and (3) of the said Act, I hereby certify that:- SABS COMMERCIAL SOC LTD Co. Reg. No.: 2000/013581/30 Specific Entity Facility Accreditation Number: T0159 is a South African National Accreditation System accredited facility provided that all conditions and requirements are complied with This certificate is valid as per the scope as stated in the accompanying schedule of accreditation, Annexure A, bearing the above accreditation number for ELECTRICAL PERFORMANCE TESTING The facility is accredited in accordance with the recognised International Standard ISO/IEC 17025:2005 The accreditation demonstrates technical competency for a defined scope and the operation of a quality management system While this certificate remains valid, the Accredited Facility named above is authorised to use the relevant accreditation symbol to issue facility reports and/or certificates Add newline here by pressing enter Mr R Josias Chief Executive Officer Effective Date: 13 November 2013 Certificate Expires: 29 November 2018

ANNEXURE A SCHEDULE OF ACCREDITATION Facility Number: T0159 Permanent Address of Laboratory: SABS Commercial SOC Ltd NEFTA 43rd Street Olifantsfontein Johannesburg 1665 Technical Signatories: Mr JL Monyai (MIL) Mr LAJ van den Heever (ML) Mr SS Mnisi (SCL) Mr FT Mkansi (HV) Mr LV Marumole (HV) Mr RI Ngobeni (MIL) Ms NK Ntseke (SCL) Mr MG Nkwashu (Methods marked #only) Mr ES Phewa (Methods marked * only) Mr V Mashiane (SABS 156,SABS 1524,VC 8036, SANS 60947-2,SANS 60947-3) Ms A Munhutu (SANS 156, 556-1, 767-1, 60439-1& 2, 60076-1,2,11, 60947-2,3, SANS/IEC 62271-1,102,200,103,100) Ms M Chokoe ( SANS/IEC 60076-2, 62271-1, 200,202,103,100,102; SANS/IEC 60076-1, 60044-1,60439-1, 60076-5, SANS 780, 60439,2) Ms N Zwidivhevho ( SANS 60227-5, VC 8006, VC 8075, SANS 1574-4, SANS 1574-5) Mr E Vumane ( SANS 1507-1, SANS 1507-2, SANS 1507-3, SANS 1507-4, SANS 1507-6) Mr LT Ralepelle (SANS 182-1, SANS 182-2, SANS 1418-1, SANS 1418-2) Mr N Maluleke (SANS 164, SANS 164-6, SANS 60884-1, SANS 60884-2-3, SANS 60884-2-7, SANS 60320-1, SANS 60669-1, SANS 61058, SANS 1661, VC 8029, VC 8008, VC 8052, VC 8003, VC 8012, SANS 1619, SANS 1433-1) Mrs E Phosa (SANS 164, SANS 164-6, SANS 60884-1, SANS 60884-2-3, SANS 60884-2-7, SANS 60320-1, SANS 60669-1, SANS 61058, SANS 1661, VC 8029, VC 8008, VC 8052, VC 8003, VC 8012, SANS 1619, SANS 1433-1) Ms K Ngondi (SANS 164, SANS 164-6, SANS 60884-1, SANS 60884-2-3, SANS 60884-2-7, SANS 60320-1, SANS 60669-1, SANS 61058, SANS 1661, VC 8029, VC 8008, VC 8052, VC 8003, VC 8012, SANS 1619, SANS 1433-1) Page 1 of 15

Postal Address: PO Box 144 Olifantsfontein Johannesburg 1665 Nominated Representative: Mr J Marema Tel: (012) 428 6748 Issue No.: 32 Fax: (012) 428 6703 Date of Issue: 16 May 2017 E-mail: johnson.marema@sabs.co.za Expiry Date: 29 November 2018 Cell No: 071 612 4533 Material or Products Tested Type of Tests/ Property measured, Range of measurement Standard Specifications, Techniques / Equipment Used Plugs, socket-outlets and socket outlet adaptors Markings on accessories Checking of dimensions Protection against electric shock Provision for earthing Terminals and terminations Construction of fixed socket-outlets VC8008:2010* SANS 60884-1:2013* SANS 164-0:2016* SANS 164-1:2016* SANS 164-2:2012* Plugs, socket-outlets and socket-outlet adaptors Interlocked socket outlets Resistance to ageing, protection provided by enclosures and resistance to humidity Insulation resistance and electric strength Operation on earthing contacts Temperature rise Breaking capacity Normal operation Force necessary to withdraw the plug Flexible cable and their connection Mechanical strength Resistance to heat Screws, current-carrying parts and connections Creepage distances, clearances and distances through sealing compound Resistance tests of insulating material to abnormal heat, fire and tracking Resistance to rusting Additional tests on pins provided with insulation sleeves SANS 164-3:2013* SANS 164-4:2013* SANS 164-5:2007* SANS 164-6:2010* SANS 60884-2-3:2005* SANS 60884-2-5:1995* Page 2 of 15

Appliances couplers Ready boards Cord sets and cord extension sets Wall boxes Markings on accessories Checking of dimensions and compatibility Protection against electric shock test Provision for earthing on couplers Terminals and terminations Construction of appliance couplers Moisture resistance test on couplers Insulation resistance and electric strength test Forces necessary to insert and withdraw the connector Operation on contacts Resistance to heating of different types of couplers Breaking capacity test Normal operation test Temperature rise test Cords and connections must comply with IEC 227 or IEC 245 Mechanical strength test Resistance to heat and ageing test Screws, current-carrying parts and connections Creepage distance test on insulation of connectors and inlets as well as clearances and distances Materials test to fire, heat and tracking Rusting test and ferrous parts All test included in SANS 1619 All tests included in SANS 60884-1, SANS 60320-1, SANS 164-0 to SANS 164-6 and SANS 1574 SANS 60227-5 SANS 60884-2-3 SANS 60884-2-7 SANS 60799 Markings Protection against electric shock Provision for earthing Construction Resistance to ageing, protection against ingress of solid objects and harmful ingress of water Insulation resistance and electric strength VC 8012:2010 SANS 60320-1:2008 IEC 227/IEC 245:2006 SANS 1619:2011 SANS 1661:2012* VC 8029:2012* SANS 60884-1:2013 SANS 60320-1:2008* SANS 164-0:2012 to SANS 164-6:2010 SANS 164-0:2016 SANS 1574:2004# SANS 60227-5:2006*# SANS 60799:2007* SANS 60884-2-7:2013* SANS 60884-2-3:2007 SANS 1085:2014 SANS 60670-1:2012 Page 3 of 15

Mechanical strength Resistance to heat Creepage distance, clearance and distance through sealing compounds Resistance to insulation material to abnormal heat and fire Resistance to tracking Resistance to corrosion Switches for appliances Cord switches independently mounted switches Switches for household and Similar fixed electrical installations Adaptors Markings Protection against electric shock Provision for earthing Terminals and terminations Construction Testing of mechanism Insulation resistance and dielectric strength Test of material to heating Endurance switch test Mechanical strength test Resistance to heat, fire and tracking test Resistance to rusting test Markings Protection against electric shock Cord anchorage test Mechanical strength test Protection against dust, water and against humid conditions Insulation resistance and dielectric strength Endurance test Mechanical strength test Resistance to heat, fire and tracking test Resistance to rusting test Endurance test Resistance to heat, fire and tracking Ratings; Classification; Markings; Protection against electric shock; Provision for earthing; Terminals; Constructional requirements Mechanisms; Resistance to aging etc. Insulation and resistance and electric strength; Temp rise; Making and breaking capacity; Normal operation; Mechanical strength VC8052:2010 SANS 61058-1:2009 SANS 61058-2-1:2011 SANS 61058-2-4:2004 VC 8003:1998* SANS 60669-1:2007* VC8008:2010 SANS 60884-2-5:1995 SANS 164-1:2012 SANS 164-2:2012 SANS 164-3:2013 Page 4 of 15

Resistance to heat; Screws, current caring parts and connection; Creepage and Clearances and distance through sealing compound; Resistance of insulating material to abnormal heat, to fire and to tracking; Resistance to rusting SANS 164-4:2013 SANS 164-5:2007 SANS 164-6:2010 Terminal blocks SANS 1433-1 SANS 1433-1:2008 Light dimmers Circuit breakers and switch disconnectors Markings on accessories Insulation resistance test High voltage test Endurance test Abnormal operations Operation of a switch Corrosion resistance Combustion test on material Resistance to heat test Absorption resistance of insulation materials Temperature rise test Light output test Tripping limits and characteristics Dielectric properties Mechanical operations and operational performance capability Overload performance Verification of dielectric withstand Verification of temperature rise Verification of overload releases Verification of under voltage and shunt releases (if applicable) Rated service short-circuit breaking capacity Rated ultimate short-circuit breaking capacity Rated short-time withstand current Short-circuit breaking capacity at maximum short-time withstand current Short-circuit at the selectivity limit current Short-circuit at 1,1 times take-over current SANS 1012:2006 SANS 60947-2:2014 IEC 60947-2:2013 SANS 60947-3:2012 IEC 60947-3:2012 SANS 156: 2007 VC8036:2006 SANS 556-1: 2012 AS 3111: 2009 AS 2184:1985 IEC 60898: 2003 Page 5 of 15

Short-circuit at ultimate shortcircuit breaking capacity Resistance to mechanical shock on impact Rated service short-circuit breaking capacity Vibration Endurance Breaking capacity Mechanical strength Water absorption Combustion Test for stick-on labels Marking 28-day test Circuit breakers and switch disconnectors Portable earthing Gear and line fitting Earth leakage relays Short-circuit performance at 1500A Short-circuit capacity Performance at rated short-circuit capacity Performance at reduced shortcircuits Mechanism Indelibility of marking Clearances and creepage distances (external parts only) Non-interchangeability Reliability of screws, currentcarrying parts and connections Reliability of screw-type terminals for external conductors Protection against electric shock Clearances and creepage distances (internal parts only) Resistance to heat Resistance to abnormal heat and to fire Resistance to rusting Making and breaking capacities (1) Leakage current (2) Strength of actuator mechanism (2) Short-circuit making capacity Fuse protected short-circuit withstand Fuse protected short-circuit making Short circuit current test Indelibility of marking Reliability of connections Protection against electric shock Dielectric properties Temperature rise Operating characteristic Mechanical and electrical endurance Behaviour of RCCB s under shortcircuit conditions SANS 60947-2:2014 IEC 60947-2:2013 SANS 60947-3:2012 IEC 60947-3:2012 SANS 156: 2007 VC8036: 2006 SANS 556-1:2012 AS/NZS 3111:2009 AS2184: 1985 IEC 60898: 2003 SANS 61230:2009 IEC 61230:2008 SANS/IEC 61284: 1997 SANS 767-1: 1982 SANS 767-2: 1983 VC8035: 1987 AS3190: 1994 Page 6 of 15

Earth leakage relays High Voltage AC circuit breakers AC Metal enclosed switchgear Resistance to shock and impact Resistance to heat Trip free mechanism Operation at limits of rated voltage Behaviour of RCCB s in case of failure of line voltage Measurement of circuit resistance Temperature rise tests Short time peak withstand current Basic short circuit duties Critical current tests Single phase short circuit tests Measurement of circuit resistance Temperature rise tests Short time and peak withstand current Verification of making and breaking capacity, circuit breakers and switches Verification of protection Arcing due to internal fault SANS 767-1: 1982 SANS 767-2: 1983 VC8035: 1987 AS3190: 1994 SANS 62271-100:2013 IEC 62271-100:2012 IEC 62271-1:2011 SANS 62271-200:2012 IEC 62271-200:2011 IEC 62271-1: 2011 SANS 62271-202:2014 IEC 62271-202: 2014 SANS 1029: 2010 NRS 004:2010 Low voltage switch gear Resistance against unwanted tripping Temperature rise limits Dielectric properties Short-circuit withstand strength Effectiveness of protective circuit Clearances and creepage distances Mechanical operation Degree of protection Wiring, electrical operation Protective measures Insulation resistance Arcing due to internal fault SANS 60439-1:2004 IEC 60439-1:2004 SANS 60439-2:2006 IEC 60439-2:2005 SANS 60439-3:2007 IEC 60439-3:2001 SANS 60439-4:2005 IEC 60439-4:2004 SANS 60439-5:2006 IEC 60439-5:2006 SANS 61439-1:2012 IEC 61439-1:2011 SANS 61439-2:2012 IEC 61439-2:2011 SANS 61439-3:2013 IEC 61439-3:2012 SANS 61439-4:2014 IEC 61439-4:2012 SANS 61439-6:2012 IEC 61439-6:2012 SANS 1973-1:2007 SANS 1973-3:2008 SANS 1973-8:2008 SANS 61641:2008 IEC/TR 61641:2008 SANS 60890:2007 IEC 60890:1987 SANS 60947-4-1:2013 IEC 60947-4-1:2012 SANS 10142-1: 2012 SANS 10142-2: 2014 Page 7 of 15

AC Disconnectors and earthing switches HV AC switch-fuse combinations HV switches HV switches Temperature rise Measurement of resistance of main circuit Short time and peak withstand current Short circuit making performance Measurement of circuit resistance Temperature rise Measurement of circuit resistance Temperature rise Short time and peak withstand current Making and breaking tests Measurement of circuit resistance Temperature rise Short time and peak withstand current Making and breaking tests SANS 62271-102:2013 IEC 62271-102: 2013 SANS 62271-103:2012 IEC 62271-103: 2011 IEC 62271-1: 2011 SANS 62271-105:2013 IEC 62271-105: 2012 IEC 62271-1:2011 SANS 62271-103:2012 IEC 62271-103: 2011 IEC 62271-1: 2011 SANS 62271-103:2012 IEC 62271-103: 2011 IEC 62271-1: 2011 Reactors Ability to withstand short circuit IEC 60289: 1988 Cable joints and terminators Thermal short circuit Mechanical short circuit protection IEC 60055-2: 1981 SANS 60502-4:2013 IEC 60502-4:2010 NRS 053: 2008 HD 629: 2002 BS 6910:1989 Insulators Temperature cycling tests SANS 60660:1999 IEC 60660: 1999 SANS 61109:2008 IEC 61109: 2008 Dry type power transformers: power transformers; distribution transformers High Voltage AC contactors and contactor-based motor starters Short-circuit test Temperature-rise test Overload current withstand Short-circuit making and breaking test Verification of co-ordination with SCPDS IEC 60726: 1982 SANS 60076-1:2011 IEC 60076-1:2011 SANS 60076-2:2011 IEC 60076-2:2011 SANS 60076-5:2006 IEC 60076-5:2006 SANS 60076-6:2008 IEC 60076-6:2007 SANS 60076-10:2001 IEC 60076-10:2001 SANS 60076-11:2005 IEC 60076-11:2004 SANS 780: 2009 SANS 62271-106:2012 IEC 62271-106: 2011 IEC 62271-1: 2011 Expulsion fuses Breaking tests SANS 60282-2:2008 IEC 60282-2: 2008 Current-limiting fuses Breaking tests SANS 60282-1:2010 IEC 60282-1: 2009 Page 8 of 15

Inductive voltage transformers Bushings AC Metal enclosed switchgear Gas insulated switchgear Current transformers AC Metal enclosed switchgear Conductors Short-circuit withstand capability test Verification of dimensions Temperature rise test Dynamic current withstand Dielectric tests on auxiliary and control circuits Temperature rise test Measurement of resistance of the main circuit Short time peak withstand current tests Verification of making and breaking capacities Test under conditions of arcing due to an internal fault Dielectric tests on auxiliary and control Circuits Short- time current tests Temperature rise test Verification of terminal markings Power frequency voltage tests Lightning impulse test Partial discharge test Dielectric tests on auxiliary and control circuits Radio Interference Corona IEC 60044-2: 2003 SANS 61869-1: 201 IEC 60137:2010 SANS 62271-200:2012 IEC 62271-200: 2011 IEC 62271-1: 2011 SANS 62271-202:2014 IEC 62271-202: 2014 SANS 1029: 2010 NRS 004:2010 SANS 62271-203:2012 IEC 62271-203: 2011 IEC 62271-1: 2011 IEC 60044-1:2012 IEC 61869-1:2007 IEC 61869-2:2012 AS 1675:1986 IEC 62271-200:2012 IEC 62271-1:2012 IEC 62271-202:2014 SANS 1029:2010 IEC 61284:1997 CISPR 18-2 : 2010 IEC 61284:1997 Inductive voltage transformers AC Disconnectors and earthing switches Lightning impulse test on primary winding Wet tests on outdoor transformers Verification of terminal markings Switching impulse test Partial discharge test Measurement of tan δ Power frequency voltage tests Lightning and switching impulse voltage tests Partial discharge Dielectric tests on auxiliary and control circuits Radio interference voltage IEC 61869 IEC 61869-1:2013 IEC 61869-3:2013 IEC 61869-5:2013 IEC 62271-102:2013 IEC 62271-103:2012 IEC 62271-1:2012 CISPR 18-2: 2010 Page 9 of 15

High Voltage AC circuit breakers HV AC switch-fuse combinations HV switches Electrical distribution equipment Cable joints and terminators Insulators Power frequency voltage tests Lightning and switching impulse voltage tests Partial discharge Radio interference voltage Power frequency voltage tests Lightning and switching impulse voltage tests Partial discharge Dielectric tests on auxiliary and control circuits Power frequency voltage tests Lightning and switching impulse voltage tests Partial discharge Dielectric tests on auxiliary and control circuits Standard wet tests AC voltage tests up to 1200 kv Lightning impulse voltage tests up to 4 MV Switching impulse voltage tests up to 3 MV Impulse current tests 1/20 μs, 8/20 μs up to 40 ka Impulse current tests 8/20 μs up to 40 ka Phase to phase lightning and switching impulse tests Phase to phase power frequency tests Insulation co-ordination Withstand voltage (AC) Partial discharge test Impulse voltage Load cycling with voltage DC voltage test Load cycling (no voltage) Load cycling (in water bath) Insulation resistance Voltage withstand in water bath Leak tightness Voltage withstand under wetting Voltage withstand under artificial rain Impulse withstand and flashover Wet and dry power-frequency withstand flashover Radio interference Verification of dimensions Puncture voltage withstand test Partial discharge extinction voltage test IEC 62271-100:2013 IEC 62271-1:2012 CISPR 18-2: 2010 IEC 62271-105:2013 IEC 62271-1:2012 IEC 62271-103:2012 IEC 62271-1:2012 IEC 60060-1:2011 IEC 60071-1: 2010 IEC 60055-2:2005 IEC 60502-4:2013 NRS 053:2008 HD 623 S1: 1996 HD 629: 2006 BS 6910: 1988 HD 691 SANS 177:2004 IEC 60071-1: 2006 IEC 60071-2: 1996 IEC 60383:1993 IEC 60437:1997 CISPR 18-2: 2010 IEC 60660:1999 IEC 61109:2008 Page 10 of 15

Surge arrestors Cables with extruded solid dielectric Bushings Gas insulated switchgear Paper cables Lightning impulse puncture test Steep-front impulse voltage test Wet switching impulse test Corona test Power-frequency voltage sparkover test Front-of-wave voltage impulse sparkover Test Switching impulse sparkover voltage/time curve test Residual voltage test Current impulse withstand Operating-duty test Insulation withstand tests on arrestor housing Residual voltage test Long duration current impulse withstand test line discharge class 1 & 2 only Power factor as a function of voltage Power factor as a function of temperature Partial discharge test Bending test Heating cycle Impulse voltage test High voltage withstand Capacitance Verification of dimensions Wet or dry lightning or switching impulse Tests Capacitance and tan δ Partial discharge Dielectric tests Radio interference voltage test Power-frequency voltage tests on main circuit Dielectric tests on auxiliary and control circuits Partial discharge measurement Voltage tests on the main circuit on site Lightning impulse test Switching impulse test Bending test Power factor/temperature test Impulse voltage test Voltage withstand Power factor IEC 60099-1:2005 SANS/IEC 61643-1:2006 IEC 61643-11:2011 IEC 60502-4:2013 IEC 60840:2006 SANS 1339:2015 VC 8077:2003 IEC 60137:2010 SANS 1035 IEC 62271-203:2012 IEC 62271-203:2012 IEC 62271-1:2012 CISPR 18-2: 2010 IEC 60055-1:2005 IEC 60055-2:1981 SANS 97:2012 VC 8077:2003 Rubber cables Partial discharge test SANS 1520-2:2008 Dry type power transformers: Lightning impulse test IEC 60076-4:2004 Page 11 of 15

Earth leakage relays Impulse voltage resistance of insulation SANS 767-1:1982 SANS 767-2:1983 VC8035;1987 AS3190: 1994 Cables with extruded solid dielectric Compliance with constructional requirements insulation before ageing insulation after ageing (Air oven) sheath before ageing sheath after ageing (Air oven) sheath after immersion in oil Pressure at high temperature (Insulation) Pressure test at high temperature (Sheath) Bending at low temperature (Insulation) Heat shock (Insulation) Heat shock (Sheath) Hot set test Flame retardance Thermal stability Shrinkage Volume resistivity Insulation resistance constant Resistivity of semi-conducting layer Bending at low temperature (Sheath) Elongation at low temperature (Sheath Elongation at low temperature (Insulation) Loss of mass IEC 60502-1:2004 IEC 60502-2:1997 IEC 60502-4:2013 IEC 60840:2006 SANS 1339:2015 SANS 1507-1:2007 SANS 1507-2:2015# SANS 1507-3:2015# SANS 1507-4:2014# SANS 1507-5:2015# SANS 1507-6:2015# VC 8077:2003 Cable joints and terminations Low voltage accessories BS EN 50393:2006 Paper cables PVC cables Electrical resistance of conductors Bending test Single core arc welding cables Electrical resistance of conductors Voltage withstand (Cores) Voltage withstand (Complete cable) Insulation @ 70ºC Compliance with constructional provisions Tensile strength of insulation before ageing IEC 60055-1:2005 IEC 60055-2:1981 SANS 97:2012 VC 8077:2003 SANS 1576:2008# IEC 60227-1:2006 IEC 60227-2:2006 IEC 60227-5:2006# SANS 1574-1:2012 SANS 1574-2:2012 SANS 1574-2:2016 SANS 1574-3:2012# BS 6004:2005 Page 12 of 15

Dielectric sheet and plate materials Pressure sensitive materials Conductors Tensile strength of insulation after ageing Loss of mass (Insulation) Tensile strength of sheath before ageing Tensile strength of sheath after ageing Loss of mass (Sheath) Bending at low temperature (Insulation) Bending at low temperature (Sheath) Elongation at low temperature Impact test at low temperature Heat shock test (Insulation) Heat shock test (Sheath) Flame retardance Test for non-contamination Pressure test at high temperature (Insulation) Pressure test at high temperature (Sheath) Flexing test Static flexibility test Tensile properties Dielectric strength Permittivity and dissipation factor Insulation resistance and resistivity Warp or twist Width Thickness Length of tape in a roll Breaking strength and elongation Adhesion strength Unwind force Flagging Thermosetting properties Dielectric breakdown voltage Insulation resistance at high humidity Effect of accelerated ageing on dielectric breakdown voltage Flammability Bond strength after solvent immersion Oil resistance Puncture resistance Electrical resistance Compliance with constructional requirements VC 8006:2010 VC 8075:2003 ASTM D229: 2013 ASTM D1000: 2010 SANS 122:2007 IEC 60228:2004 SANS 523:2009 SANS 1411:2008 SANS 1411:1-7:2008# SANS 182-1:2008 # SANS 182-2:2008# SANS 182-5:2008 VC8075 VC8006 Page 13 of 15

Rubber cables Durability of colours and markings Solderability of untinned conductors Electrical resistance of conductors Voltage test on completed cables Voltage test on cores Insulation resistance at elevated temperatures Flexing test Static flexibility test insulation before ageing insulation after ageing test (Air oven) sheath before ageing sheath after ageing test (Air oven) sheath after immersion in oil Hot set test (Insulation) Hot set test (Sheath) Pressure test at high temperature (Insulation) Bending at low temperature (Sheath) Elongation at low temperature (Sheath) Flame retardance Test for resistance to heat SANS 1520-1:2008 SANS 1520-2:2008 SANS 1520-3:2013 SANS 1574-4:2013# SANS 1574-5:2013# VC 8006:2010 Aerial bundle cable All tests SANS 1418-1:2009# SANS 1418-2:2014# AS/NZS 3560 Part1:1991, excluding heat radiation test SANS 1418-2:2016 Dielectric materials Enamelled wire Dielectric breakdown voltage of solid electrical insulation Dielectric strength of solid electrical insulation AC loss characteristics of solid electrical insulation Permittivity of solid electrical insulation DC resistance or conductance of insulating materials Volume resistivity and surface resistance Electrical resistance only Electrical resistance Springiness Mandrel winding test Stretching test ASTM D149:2013 BS 2050:1978 ISO 284:2012 NCB 245 SANS 971:2013 IEC 60093:1980 SANS 1287:2007 SANS 60317-0-1:2014 SANS 60317-0-2:2014 SANS 60317-0-3:2014 SANS 60317-4:2007 SANS 60317-8:2010 Page 14 of 15

Jerk test Peel test Heat shock Cut-through Resistance to solvents Breakdown voltage Continuity of coverage (L.V. only) High temperature failure Packaging SANS 60317-12:2012 SANS 60317-13:2012 SANS 60317-18:2011 SANS 60317-100:2014 Winding wires Power transformers and distribution transformers Electrical resistance Springiness Mandrel winding test Stretching test Jerk test Original Date of Accreditation: 01 September 2002 Peel test Adherence test Solvent test Breakdown voltage Continuity of covering (L.V. only) Heat shock Cut-through test Packaging IEC 60851-1:1996 IEC 60851-2:2010 IEC 60851-3:2014 IEC 60851-4:2006 IEC 60851-5:2012 IEC 60851-6:2013 SANS 60317-0-1:2014 SANS 60317-0-2:2014 SANS 60317-0-3:2014 SANS 60317-4:2007 SANS 60317-8:2010 SANS 60317-12:2012 SANS 60317-13:2012 SANS 60317-18:2011 SANS 60317-100:2014 Lightning impulse testing IEC 60076-3:2014 SANS 60076-3:2014 IEC 60076-4:2004 SANS 60076-4:2004 IEC 60076-6:2006 SANS 60076-6:2006 SANS 780:2009 ISSUED BY THE SOUTH AFRICAN NATIONAL ACCREDITATION SYSTEM Accreditation Manager Page 15 of 15