UL 1008:8ED 2014-12
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Transfer Switch Equipment
13-07-2022
22-12-2014
PREFACE
1 Scope
2 General Requirements
3 Definitions
4 Characteristics
5 Product Information
6 Construction Requirements
7 Performance Requirements
8 Service Equipment Requirements
9 Test Requirements - General
10 Test Requirements - Routine Tests
Annex A1 - Normative references
Annex A2 - Informative references
Annex B (informative) - French translation of markings
Annex C (informative) - Spanish translation of markings
Annex D (normative) - Bypass/Isolation switches
Annex E (normative) - Transfer switches for fire pump service
Annex F (Normative in Canada) (Informative in Mexico and
the United States) - Hybrid Transfer Switches
Annex G (normative) - Softload Transfer Switches
Annex H (Normative in Mexico and the United States) (Informative
in Canada) - Instrumentation and Calibration of High
Capacity Circuits
Annex I (informative) - Sample Markings
Annex J (normative) - Inlet Assemblies for Transfer Switch
Equipment
This revision of ANSI/UL 1008 is being issued to incorporate the following changes: Revision to Add Recreational Vehicle Transfer Switches to the Scope of UL 1008 Revisions to Address the Grounding and Bonding of Neutral Circuits Revision to the Overload, Endurance, and Short Circuit Testing Miscellaneous Revisions Regarding Inlet Assemblies, Mechanical Interlocking of Single Pole Inlets and Readily Accessible Service Disconnect Switches Revisions Regarding the Use of "Circuit Breaker Based" Transfer Switches and Compliance with Service Disconnecting Requirements Revision for Consistency with UL 50E Rain Test Revisions to Annex E to Cover Freestanding Complete Packaged Fire Pump Power Transfer Units Revisions to Address System Available Fault Calculations for Momentary Paralleling Situations Clarification of Marking Requirements Revised Requirements for Monitoring the Temperature on Inlets
This standard applies to the following types of transfer switches that have a maximum rating of 1000 volts for use in non-hazardous locations, in accordance with Annex a1, Item 1: a)Automatic transfer switches; b)Manual or non-automatic transfer switches; c) Closed transition transfer switches; d)Hybrid transfer switches; e)Transfer switches for fire pumps; f)Bypass/isolating switches; g)Softload transfer switches; h)Transfer switches intended for use as service equipment; i)Transfer switches intended for use in mobile/portable applications such as recreational vehicles, motor homes, camping trailers, and mobile health care facilities; and j)In Mexico and the United States, branch circuit emergency lighting transfer switches (BCELTS).
| DevelopmentNote |
Also numbered as NMX-J-672 ANCE & CSA C22.2.178.1. (08/2012)
|
| DocumentType |
Standard
|
| PublisherName |
Underwriters Laboratories
|
| Status |
Superseded
|
| SupersededBy |
| DOD S 17773 : B | SWITCHES, BUS TRANSFER, ELECTRIC POWER, AUTOMATIC AND MANUAL (METRIC) |
| MIL-PRF-32150 Revision B:2013 | STATIC AUTOMATIC BUS TRANSFER SWITCH (SABT) ON SURFACE AND SUBMARINE NAVAL VESSELS |
| MIL-PRF-17773 Revision D:2015 | SWITCH, BUS TRANSFER, ELECTRIC POWER, AUTOMATIC |
| UFC 3-520-01 : 2015 | UNIFIED FACILITIES CRITERIA - INTERIOR ELECTRICAL SYSTEMS |
| PIP ELSAP20 : 2018 | LOW-VOLTAGE AUTOMATIC TRANSFER SWITCH |
| CSA C22.2 No. 62368-1 : 2014 | AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS |
| API 14FZ : 2013 | RECOMMENDED PRACTICE FOR DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, ZONE 0, ZONE 1, AND ZONE 2 LOCATIONS |
| UFC 3-540-01 : CHANGE 1 | UNIFIED FACILITIES CRITERIA - ENGINE-DRIVEN GENERATOR SYSTEMS FOR PRIME AND STANDBY POWER APPLICATIONS |
| NEMA ICS 3.1 : 2009(R2014) | GUIDE FOR THE APPLICATION, HANDLING, STORAGE, INSTALLATION, AND MAINTENANCE OF MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTERS |
| NEMA ICS 10.2 : 2005 | INDUSTRIAL CONTROL AND SYSTEMS - PART 2: STATIC AC TRANSFER EQUIPMENT |
| NEMA ICS 10.1 : 2005 | INDUSTRIAL CONTROL AND SYSTEMS - PART 1: ELECTROMECHANICAL AC TRANSFER SWITCH EQUIPMENT |
| IEEE 1818-2017 | IEEE Guide for the Design of Low-Voltage Auxiliary Systems for Electric Power Substations |
| UL 458:6ED 2015-09 | Power Converters/Inverters and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| ASHRAE 90.4 : 2016 | ENERGY STANDARD FOR DATA CENTERS |
| UL 1778:5ED 2014-06 | Uninterruptible Power Systems |
| UL 508:18ED 2018-03 | Industrial Control Equipment |
| API 14F:2008 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| EEE 602 : 2007 | ELECTRIC SYSTEMS IN HEALTH CARE FACILITIES |
| API 14F : 2008 : R2013 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| CSA C22.2 No. 5 : 2013 | MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES AND CIRCUIT-BREAKER ENCLOSURES |
| CSA C22.2 No. 263 : 2015 | FIRE PUMP CONTROLLERS |
| IEEE 3001.5-2013 | IEEE Recommended Practice for the Application of Power Distribution Apparatus in Industrial and Commercial Power Systems |
| SAE J 2836/3 : 2017 | USE CASES FOR PLUG-IN VEHICLE COMMUNICATION AS A DISTRIBUTED ENERGY RESOURCE |
| CSA C22.2 No. 107.3 : 2014 | UNINTERRUPTIBLE POWER SYSTEMS |
| IEEE 242-2001 | IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book) |
| API 14F REDLINE : 2008 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| IEEE 45.1-2017 | IEEE Recommended Practice for Electrical Installations on Shipboard--Design |
| CSA C22.2 No. 94.1 : 2015 | ENCLOSURES FOR ELECTRICAL EQUIPMENT, NON-ENVIRONMENTAL CONSIDERATIONS |
| CSA C22 NO. 4 : 2016 | ENCLOSED AND DEAD-FRONT SWITCHES |
| UL 50:13ED 2015-10 | Enclosures for Electrical Equipment, Non-Environmental Considerations |
| CSA C22.2 No. 5 : 2013 | MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES AND CIRCUIT-BREAKER ENCLOSURES |
| C22.1-15 | Canadian Electrical Code, Part I (23rd Edition), Safety Standard for Electrical Installations |
| CSA C22.2 No. 0.4 : 2004(R2013) | BONDING OF ELECTRICAL EQUIPMENT |
| CSA C22.2 No. 0.5 : 2016 | THREADED CONDUIT ENTRIES |
| CSA C22.2 No. 0.2 : 2016 | INSULATION COORDINATION |
| UL 943:5ED 2016-05 | Ground-Fault Circuit-Interrupters |
| UL 1778:5ED 2014-06 | Uninterruptible Power Systems |
| UL 218:3ED 2015-09 | Fire Pump Controllers |
| CSA C22.2 No. 65 : 2013 | WIRE CONNECTORS |
| CSA C22.2.107 : 1957 | CONSTRUCTION AND TEST OF RECTIFYING EQUIPMENT |
| CSA C22.2 No. 0.15 : 2015 | ADHESIVE LABELS |
| NFPA 99 : 2018 | HEALTH CARE FACILITIES CODE |
| CSA C22.2 No. 263 : 2015 | FIRE PUMP CONTROLLERS |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| IEEE C37.09-1999 | IEEE Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis |
| UL 746A:6ED 2012-09 | Polymeric Materials - Short Term Property Evaluations |
| UL 924:10ED 2016-05 | Emergency Lighting and Power Equipment |
| CSA C22.2 No. 107.1 : 2016 | POWER CONVERSION EQUIPMENT |
| CSA C22.2 No. 14 : 2013 | INDUSTRIAL CONTROL EQUIPMENT |
| CSA Z32 : 2015 | ELECTRICAL SAFETY AND ESSENTIAL ELECTRICAL SYSTEMS IN HEALTH CARE FACILITIES |
| CSA C22.2 No. 144.1 : 2016 | GROUND-FAULT CIRCUIT-INTERRUPTERS |
| C282-15 | Emergency electrical power supply for buildings |
| CSA C22.2 No. 94.2 : 2015 | ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS |
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