Leviton Manufacturing, Co., Inc. Ground Fault Current Interruption use with Electrical Vehicle Supply Equipment
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1 Leviton Manufacturing, Co., Inc. Ground Fault Current Interruption use with Electrical Vehicle Supply Equipment EPRI IWC Quarterly Meeting PHEV Working Group
2 Introduction Background on GFCI Agenda Systems approach to GFCI use with Electric Vehicles Raising consumer awareness 2011 Code Changes GFCI / WIU Product Selection GFCI Testing Emerging Trends 2 Leviton Confidential
3 Leviton is the market share leader in North American electrical devices We Make Wiring Devices, Cable, Lighting Mgmt. Systems, & Voice & Data Products We make millions of units each day Leviton Manufacturing Owned and Operated by the Leviton Family for over 106 yrs We don t answer to Wall Street Diverse sales across multiple industries Worldwide presence Facilities (including plants) in the U.S., Mexico and China Engineering Sites Worldwide Leviton is the preferred supplier of EVSEs 3 Leviton Confidential Leviton managed turnkey installation
4 A Ground Fault Circuit Interrupter is an electrical wiring device that disconnects a circuit whenever it detects that the electric current is not balanced between the energized conductor and the return neutral conductor 4 Leviton Confidential
5 Use of GFCIs has reduced the number of electrocutions GFCI's (millions) Electrocutions # of GFCI's # Electrocutions 5 Leviton Confidential
6 GFCI provide protection at 5mA 20 4 AMPERES AND OVER Heart Paralysis, Serious Tissue and Organ Burning AMPS TO 4 AMPS Certain Ventricular Fibrillation Possible Ventricular Fibrillation 30 ma - Breathing Difficult, Fibrillation in Small Children 15 ma - Muscles Freeze in 50% of the Population >10 ma - Let-Go Threshold 5 ma - GFCI Trip Level 1 ma - Perception Level 6 Leviton Confidential
7 Developing tendencies on consumer GFCI installations Safety is important to consumers Consumers are DIYs and cost sensitive Level 1 cord set features impact the experience Most consumers are unaware of their GFCI use At this point nuisance tripping is a minor customer concern Consumers are primarily using their GFCIs to charge their PHEVs Many consumers will combine their GFCI and Level 2 installations 7 Leviton Confidential
8 Travel cord set features may impact customer experience with GFCI Level 1 EVSE Cord Set Required Circuit: Single Pole Breaker - 120V, 15A; Leviton offers 2-pole breaker NEMA 5-15P for Power Connection NEMA 5-15R or 5-20R may be used Stores in the Vehicle Trunk or Hangs on the Wall NEMA 4 Outdoor Enclosure Auto re-closure feature CCID Ability to respond to a 20mA ground fault Select Charging Amperage: 7A or 12A EV cord selection 14AWG 8 Leviton Confidential Indoor Use: Height: 450 mm (18 in.) and not more than 1.2 m (4 ft) above the floor level Outdoor Use: Height: 600 mm (24 in.) and not more than 1.2 m (4 ft) above the parking surface.
9 Customer GFCI readiness is important to reduce or eliminate field issues Check consumer GFCI Cord set holder Educate consumer on shared versus dedicated circuits Cord management EVSE location 9 Leviton Confidential
10 GFCI device must be installed at a readily accessible location 10 Leviton Confidential
11 GFCI protection for receptacles located in nondwelling unit garages 11 Leviton Confidential
12 A 15A or 20A, 125V receptacle is not required in dwelling unit accessory buildings 12 Leviton Confidential
13 Selecting the correct GFCI will enable consumers to optimize their EVSE experience 13 Leviton Confidential
14 While in use covers resist moisture and dust 14 Leviton Confidential and can vary by depth
15 In addition to meeting NEMA/UL/NEC requirements we recommend further testing GFCIs with EVSEs Every GFCI must pass the following in-line manufacturing tests no trip below 4mA (no load) must trip at 6mA (no load) no trip below 4mA (with load) must trip at 6mA (with load) must trip with 2 ohm grounded neutral must trip within 25 ms with a 500 ohm fault must trip with test button must not trip with noise calibration test at 102V test button at 132V 1500V hi-pot 15 Leviton Confidential Repeatable insertion tests Impact of environmental conditions on GFCIs Testing GFCI at and above load Real-world use indoor and outdoor with multiple travel cord sets
16 Emerging trends Electrical contractors should educate and understand how the consumer is using their Level 1 cord set Receptacles and Level 1 cord set compatibility impacts the consumer experience Indoor and outdoor use require different GFCIs and additional weather protection NEMA GFCI meet EVSE test requirements Consumers are using receptacles to charge their EV s and may DIY 16 Leviton Confidential
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