PowerZone 4 Low Voltage MetalEnclosed Drawout Switchgear versus

Power-Zone® 4 Low Voltage Metal-Enclosed Drawout Switchgear versus Power-Style® QED-6 Rear-Connected Switchboard 1

Marketplace Drivers & Influencers Customer Need/Preference • Maintenance • High/Low • Uptime Switchgear • $$ • Safety & Fire • Features • Flexibility • Cost • Footprint • Manufacturer • Certification • 3 rd Party Switchboard • Channel • Distributor • Contractor • End User • Durability Application/ Environment • Enclosure Type • Indoor • Outdoor • Water/Sprinkler • Dust/Chemicals • Corrosive • Explosion • System Design • Service • Available Fault • Processes • Paper Mill • O&G • W/WW • Utility • Education • Commercial • Usage Codes & Standards • Safety • Coordination • PPE • Maintenance • Lockout/Tagout • Certification • 3 rd Party • Consistency • Design/Testing • Language • Quality • Component Design & Testing • Manufacturing Testing Technology • Components • Relay • Circuit Breaker • Materials • Systems • AMS/ERMS • Structure • Footprint • Seismic • Barriers • Arc Flash • Arc Resistant • Localization • Countries • Counties • Cities Increasing complexity of customer requirements/applications, advancements in technology (components/systems/materials) and changing codes & standards continue to evolve the switchgear and switchboard environments blurring the lines between the two types of distribution equipment. 5

Switchboard or Switchgear? Hospital Site in Ontario with Eaton Gear Switchboard label Built to C 22. 2 No. 31 ANSI breakers and “switchboard elements” Switchgear label 6

Distribution Equipment Codes & Standards ANSI - American National Standards Institute IEEE - Institute of Electrical & Electronic Engineers UL - Underwriter’s Laboratories CSA – Canadian Standards Association NEMA - National Electrical Manufactures Association NEC - National Electrical Code CEC - Canadian Electrical Code “ANSI Switchgear” “ANSI CB” “UL Switchboard” “UL CB” 8

Standards EQUIPMENT CIRCUIT BREAKERS Switchgear LV Power CBs ANSI C 37. 20. 1 UL 1558 NEMA SG 5 CSA C 22. 2, No. 31 “ANSI” Switchboards ANSI C 37. 13, . 16, . 17, . 50 UL 1066 NEMA SG 3 Insulated Case CBs UL 891 CSA C 22. 2, No. 31* “UL” UL 489 CSA C 22. 2 No. 5 NMX J-266 -ANCE *CSA C 22. 2 No. 244 is a newer switchboard standard that is harmonized with UL 891 but is not used by SEC or any Canadian competitor. UL and CSA provide 3 rd Party Certification 12

NEMA Switchboard vs Switchgear Overview Power-Zone 4 ANSI Switchgear… • Equipment Designed to C 37. 20. 1/UL 1558/C 22. 2 No. 31 • • Rigorous/Stringent Tests/Designs Higher Temperature Ratings 30 Cycle Withstand Ratings Compartmentalized and Barriered for Safety • LVPCBs Designed to ANSI C 37, UL 1066 • Heavy Industrials, High Maint. , Continuity Of Service Price QED-6 Rear Connected Switchboard. . . • • Equipment Designed to UL 891 / C 22. 2 No. 31 ICCB & MCCB Designed to UL 489 / CSA C 22. 2 No. 5 Individual Mount, Drawout or Fixed Compartmentalized & Barrierd for Safety • Benefits of Swgr design with Swbd flexibility Industry Footprint • Light Industrials, Data Centers, Low Maintenance Lead Time QED-2 Front/Rear Connected Switchboard. . . Maintenance • • • Equipment Designed to UL 891/C 22. 2 No. 31 ICCB & MCCB Designed to UL 489 / CSA 22. 2 No. 5 Individual or Group Mount (NW/NT/H/J/L/P/R) Utility, Commercial, Education, Light Industrial Low/No Maintenance, More Flexibility 13

Standards Comparison EQUIPMENT CIRCUIT BREAKERS Switchgear LV Power CBs ANSI C 37. 20. 1 UL 1558 NEMA SG 5 CSA C 22. 2, No. 31 “ANSI” Switchboards ANSI C 37. 13, . 16, . 17, . 50 UL 1066 NEMA SG 3 Insulated Case CBs UL 891 CSA C 22. 2, No. 31* “UL” UL 489 CSA C 22. 2 No. 5 NMX J-266 -ANCE *CSA C 22. 2 No. 244 is a newer switchboard standard that is harmonized with UL 891 but is not used by SEC or any Canadian competitor. UL and CSA provide 3 rd Party Certification 15

Standards Comparison: Equipment UL/CSA Switchboards ANSI Switchgear Purpose Fire Protection and Safety, Low or No Maintenance, Long Service Life Continuity of Service, Arc Flash Safety, Regular Maintenance, Heavy Duty Application Non-critical loads, commercial residential, education, banks, light industrials, Data Centers Critical Loads, Heavy Industrials, Petro-chem, Auto, Steel, Paper Mills, Water/Wastewater, Data Centers, Healthcare, etc. Selectivity Loss of selectivity at high short circuit current levels Can maintain coordination due to higher withstand short circuit capabilities of LVPCBs Operation/Usage Infrequent Operation, Limited Staff /Maintenance Members Repetitive Duty, Frequent Operation, Larger Maintenance Staff Maintenance Low or No Maintenance High Maintenance, Maintainable for Extended Life 16

Standards Comparison: Equipment UL/CSA Switchboards ANSI Switchgear Electronic Trip Units Yes Low Amp Breakers Yes No Equipment Standards/Certifica. UL 891 NEMA PB 2 C 22. 2, No. 31 ANSI C 37. 20 ANSI C 37. 51 ANSI C 37. 14 UL 1558 (Refers to ANSI Heavily) C 22. 2, No. 31 Bus Design Temperature Rise or Physical Dimensions (1000 A/sq in) Temperature Rise (65 Dec C over 40 deg C ambient); MUST TEST Hinged Door Not Required Sheet Metal 16 ga. Minimum 14 ga. : 11 g. Minimum or Combination between Compartments Maximum Short Circuit Rating 200 k. A Dependent on CB or Fuse 17

Standards Comparison: Equipment UL/CSA Switchboards ANSI Switchgear Short Time Withstand (Structure) Not Required by Standard (Manufacturer Defined: Approx. 65 k. A, 18 -30 Cycles) 85 k. A / 100 k. A Arc Flash Reduction Techniques in Structures and on Buses Bus-in-a-box (open design in back), barriers available but seldom used, Few techniques available Breaker has defined compartments, insulated bus, rear hinged doors, barriers between compartments and sections are available Certification UL Witness Testing Required Follow up testing required in some instances. Plant visits frequent. ANSI is a self certification. UL 1558 does require Witness testing and plant visits. 30 Cycles Not Breaker Dependent (ANSI defined) 19

Standards Comparison EQUIPMENT CIRCUIT BREAKERS Switchgear LV Power CBs ANSI C 37. 20. 1 UL 1558 NEMA SG 5 CSA C 22. 2, No. 31 “ANSI” Switchboards ANSI C 37. 13, . 16, . 17, . 50 UL 1066 NEMA SG 3 Insulated Case CBs UL 891 CSA C 22. 2, No. 31* “UL” UL 489 CSA C 22. 2 No. 5 NMX J-266 -ANCE *CSA C 22. 2 No. 244 is a newer switchboard standard that is harmonized with UL 891 but is not used by SEC or any Canadian competitor. UL and CSA provide 3 rd Party Certification 21

Standards Comparison: Circuit Breakers UL 489 / CSA ANSI C 37 / UL 1066 CB Design/Test Philosophy No User Replacement Parts Little/No Maintenance Molded Case Good Performance/Reliability Long Service Life Field Replaceable Parts Maintainable for Long Service Life Newer Breakers are Closed Frame High Performance/Reliability High Maintenance Costs CB Ratings 600 V max 635 V max Tests ANSI and UL both require the same basic tests: Dielectric, Calibration, Overload, Temperature, Endurance, & Short Circuit. The real differences lie in the specifics of the OL, Temp, Endurance, & SC tests. Certification Tests Conducted are Witnessed by UL Reps; Follow-up Tests Required UL 1066 (includes requirements of the ANSI C 37 Std) are Witnessed by UL Reps; After passing both ANSI/UL Test Programs, UL allows Labeling as “LVPCB”; No Follow-up Tests Required, although inspections are completed to ensure no changes 22

Standards Comparison: Circuit Breakers Test UL 489 / CSA ANSI C 37 / UL 1066 Overload testing is done to demonstrate making and breaking current values that might be obtained when initially energizing a motor load. Each time the circuit breaker is closed and opened on a high current load (600%), the contact surfaces are subjected to arcing and heat. This action simulates an accelerated life test to make sure the contacts provide adequate conductivity through many operations. The UL 489 Standard tests all circuit breaker ratings with significant operations to ensure the design is capable of a long service life with no maintenance. The ANSI C 37 Standard tests circuit breakers rated only up to 2000 A. 23

Standards Comparison: Circuit Breakers Test UL 489 / CSA ANSI C 37 / UL 1066 Temperature The UL 489 Standard allows for two types of ratings. Standard circuit breakers cannot exceed a maximum of 50°C temperature rise at the wire terminal connection at 100%current in 40°C open air. 100% rated circuit breakers may have a temperature rise of 60°C at the wire terminal connection in the smallest allowable enclosure if the circuit breakers are connected with wire rated at 90°C wiring insulation sized to the 75°C chart (Table 310 -16, National Electric Code®—NEC®). The ANSI C 37 Standard requires a maximum of 55°C temperature rise at 100% in the smallest enclosure and a maximum of 85°C temperature rise on the contacts. 24

Standards Comparison: Circuit Breakers Test UL 489 / CSA ANSI C 37 / UL 1066 Endurance Circuit breakers tested to the UL 489 Standard must pass a significant number of operations without any maintenance. This test verifies that the design is capable of a long service life. The ANSI C 37 Standard tests circuit breakers for further operations but then allows for maintenance of the circuit breaker at relatively short intervals. NOTE: No manufacturer currently offers 225 A or 600 A frame circuit breakers tested to ANSI C 37. 25

Standards Comparison: Circuit Breakers Test UL 489 / CSA ANSI C 37 / UL 1066 Short Circuit The short-circuit tests reflect differences in the philosophies between the UL and ANSI circuit breaker standards. The UL 489 Standard requires that the tests be conducted at several values of short-circuit current. A separate test sequence evaluates the maximum interrupting rating claimed by the manufacturer. Tests are conducted at the rated voltage(s) of the circuit breaker which is typically 240, 480 or 600 V. Three-pole circuit breakers are tested under three-phase conditions during the maximum interrupting ability sequence. Each pole is tested individually at a reduced current level. The circuit breaker must safely interrupt the short-circuit current and protect the rated wire in the circuit. The ANSI C 37 Standard requires that a three pole circuit breaker be tested under three-phase conditions at the maximum interrupting rating and also that each individual pole be tested at 87% of the maximum interrupting rating. Both the three phase and the individual-pole tests are conducted at rated maximum voltages of 254, 508 and 635 V. The ANSI C 37 Standard also includes a separate sequence to evaluate the short-time withstand current of the circuit breaker. The short-time withstand current is a high-level current that can be maintained for 0. 5 seconds without damage to the circuit breaker. 26

Feature Comparison QED-6 vs PZ-4 35

QED-6 vs PZ-4 Feature Comparison QED-6 Power-Zone 4 Equipment Standards UL 891, NEMA PB-2, C 22. 2 No. 31 Volts Up to 600 V max ANSI C 37, UL 1066, NEMA SG 5, C 22. 2 No. 31 Up to 635 V max Thru Bus Ratings 1600, 2000, 2500, 3000, 4000, 5000 1600, 2000, 3200, 4000, 5000 Equipment Short Circuit Ratings 150 k. A @ 480 V 100 k. A @ 600 V 200 k. A @ 480 V 130 k. A @ 600 V Short Time/Withstand Not Required, but Self Certified 100 k. A for 60 cycles* continuous Circuit Bkr Standards UL 489, NEMA AB 1, C 22. 2, No. 5 C 37. 13, C 37. 16, C 37. 17, C 37. 50, NEMA SG-3, UL 1066 NT/NW Frame Ratings NW: 150 k. A @ 480 V, 100 k. A @ 600 V 100 k. A Max Withstand, 0. 5 sec NT: 100 k. A @ 480 V, 50 k. A @ 600 V 35 k. A Max Withstand, 0. 5 sec NW: 200 k. A @ 508 V, 130 k. A @ 635 V 100 k. A Max Withstand, 0. 5 sec NT: Up to 42 k. A @ 508 V, N/A @ 635 V 42 k. A Max Withstand @ 508 V, 0. 5 sec Section Widths 22”W, 30”W, or 36”W 200 k. A @ 480 V, 100 k. A @ 600 V (22” or 30”W structures only) N/A H/J/L Frame Ratings * The ANSI standards only requires two 30 cycle tests with a few second break in between. =S= runs it continuously for 60 cycles 36

QED-6 vs PZ-4 Feature Comparison QED-6 Incoming Type Incoming Location Power-Zone 4 Cable, Xfmr, Busway, Conn to Exist Top/Bottom Multiple Source (i. e. MTM) Optional Grounded/Ungrounded Optional Arc Resistant Self Certified, Not UL Listed NW Breakers w/ Arc. Blok Only UL Listed & Certified NW Breakers w/ Arc. Blok Only Micrologic Trip Units S (Basic), A, E, P, H S(Basic), A, P, H 3 P/4 W, 3 P/3 W Optional 3 -High Design Optional Paint ANSI 49, 61, Custom Optional 6 Circuit Mains 37

QED-6 vs PZ-4 Feature Comparison QED-6 Power-Zone 4 Not Available* Optional Barriers b/w Sections Optional Barriers b/w Comparts Optional Communications Modbus Serial, Ethernet (Modbus TCP), Web Enabled Widths Depths 22”, 30”, 36” 54”, 60”, 72”, 80” NEMA Enclosures NEMA 1, 3 R, PZ House Busway Optional Overhead Lifter Optional Fully Rated Bus Optional 3 -High Design Optional Insulated Bus 38

QED-2 vs QED-6/PZ-4 40

Product Comparison – Front/Rear Access QED-2 Switchboards Front Optional Rear QED-6 / PZ-4 Front Required Rear Switchboards may be placed against a wall. Switchgear requires rear access. 41

Product Comparison – CB Mounting QED-2 Switchboards Group Mount or Individual Mount QED-6 / PZ-4 Individual Mount Only Individual mounted circuit breakers are easier to perform maintenance or replace. 42

Product Comparison – Compartments QED-2 Switchboards QED-6 / PZ-4 Open CABLE BUS BKR “Bus-in-a-box”, Optional Barriers 3 Separate Compartments (Bkr, Bus, Cable) Separate compartments required on Switchgear to improve Arc Flash Safety. 43

Equipment Competitors UL 489 / CSA 22. 2 No. 5 ANSI C 37 / UL 1066 Schneider Electric QED-6 (Rear Connected) QED-2 (Front/Rear Connected) QED (Canada) Power-Zone 4 AR Power-Zone 4 Eaton/Cutler POW-R-Line i (Rear) -> QED-6 Equivalent Magnum DS POW-R-Line C (Front/Rear) -> QED-2 Equiv AR Magnum DS POW-R-Line (Front ) -> QED-2 Equivalent Front Access General Electric POWERBREAK II (Rear) -> QED-6 Equiv AV-3 (Front/Rear) -> QED-2 Equivalent AKD-10 Arc Vault Siemens RC-III WL AR WL ABB N/A Max. SG MNS (Arc Resistant) 44

General Conclusions ● LV Power Circuit Breakers (ANSI C 37. 13 / UL 1066) are subjected to similar tests, but different criteria than UL 489 (OL, SC, Therm, Endurance) ● LV Switchgear and Rear Connected Switchboards have many common traits, but differ primarily in the standards: ANSI C 37. 20 / UL 1558 vs. UL 891 ● LV Power Circuit Breakers and LV Switchgear have higher short time ratings. (ANSI required) ● LV Power Circuit Breakers typically have heavier contacts and springs and considered the most robust interruption device offered at 600 V. Expected to be maintained much more often than UL 489 circuit breakers. ● The high short-time rating and maintainability of LV Switchgear tend to be its most outstanding attributes. ● Customer requirements, technology, and standards continue evolve, ultimately blurring the lines and traditional definitions of switchboards and switchgear. 45

Thank you 47