Electric Baseboard Heating Equipment

UL Standard Edition 5 Published Date: August 31, 2009 Last Revision: February 02, 2021 ANSI Approved: February 02, 2021 DOD Approved: August 30, 1986

Scope

010420-000000-000000

1 Scope

1.1 These requirements cover portable and fixed electric baseboard heating equipment rated at 600 volts or less, to be employed in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 Baseboard heating equipment includes baseboard heaters and baseboard heater accessories.

1.3 Electric baseboard heating equipment intended for use in a hazardous location is judged on the basis of compliance with the requirements in this standard, together with those recognized requirements applicable to usage in hazardous locations.

1.4 Any air heating appliance sold or recommended for use as a baseboard heater, irrespective of its dimensions or other characteristics, is to be identified as a baseboard heater. It will be categorized as a fixed or portable baseboard heater in accordance with the following:

a) Fixed – A heater is identified as a fixed baseboard heater if:
1. 1) The heater is less than 6 in (150 mm) in overall depth, the ratio of the overall length to the overall height is more than two to one, and the heater can be installed completely within a space of 18 in (460 mm) above the floor; or
2. 2) The heater enclosure is intended to be connected to other heater enclosures to form a system.
3. Exception: A heater intended for ceiling mounting or suspended mounting or marked "Do Not Install Less Than 6 Feet From Floor" is not considered to be a baseboard heater even if it meets the specifications in (1) or (2) above.
b) Portable – A portable heater is identified as a baseboard heater if, excluding projections of guard or feet, it is less than 5 in (130 mm) in depth and if the ratio of its overall length to its height without the handle is as follows:

Maximum height of heater, feet (mm)

Ratio of length to height

2 (610)

More than 2 to 1

Over 2 (610)

More than 3 to 1
Exception: A portable radiant heater which has a visible glowing heating element and which is not sold or recommended for use as a baseboard heater may be excluded as a baseboard heater even if it meets the dimensional specifications in (b) above. Such a heater may be judged under the requirements for movable air heaters in the Standard for Movable and Wall- or Ceiling-Hung Electric Room Heaters, UL 1278. For this determination, a radiant heater is one in which the visible portion of the heating element attains a temperature of at least 650°C (1200°F) under normal conditions of operation.

Summary of Topics

Summary of Topics s1042_5_sum.html

Summary of Topics

These revisions of ANSI/UL 1042 dated February 2, 2021 includes replacing the reference to the Standard for Power Conversion Equipment, UL 508C, with reference to the Standard for Adjustable Speed Electrical Power Drive Systems – Part 5-1: Safety Requirements – Electrical, Thermal and Energy, UL 61800-5-1; 3.3.4.1 and 17.4

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Date
February 02, 2021	Redline	Revision
December 14, 2016		Revision
December 14, 2015	Redline
September 12, 2014	Redline
September 09, 2014		Revision
June 03, 2013		Revision
January 28, 2013		Revision
June 16, 2010		Revision
December 29, 2009		Revision

Date

February 02, 2021

Redline

Revision

December 14, 2016

Revision

December 14, 2015

Redline

September 12, 2014

Redline

September 09, 2014

Revision

June 03, 2013

Revision

January 28, 2013

Revision

June 16, 2010

Revision

December 29, 2009

Revision

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A revision of a single or multiple requirement(s).
A complete new edition of an existing Standard or Outline.
A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

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November 06, 2020

October 28, 2016

June 10, 2016

July 18, 2014

May 29, 2014

April 19, 2013

April 16, 2012

January 27, 2012

March 07, 2011

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Bulletin Bulletins These bulletins are not used in CSDS. These are announcement and report type bulletins. ×	Summary of Topics (SOT)
March 08, 2016	View Summary of Topics m1042_5_20160308_sum.html Subjects 1042 (1278, 2021) Bulletin Dated: March 8, 2016 SUMMARY OF TOPICS The following topics were discussed at the meeting of the Standards Technical Panel for Electric Room Heaters and Related, STP 1042: 1. Status of Recent Ballot for UL 1278 2. New UL 1042 Proposal Regarding Clarification of Requirements for Heating Elements 3. New UL 1278 Proposal Regarding the Clarification of Alarms 4. New UL 1278 Proposal Regarding the Clarification of the Static Load Test for Hanging Means 5. New UL 1278 Proposal Regarding the Clarification of Requirements for Heating Elements 6. New UL 2021 Proposal Regarding the Clarification of Requirements for Heating Elements 7. Smart Enabled Portable Heaters 8. Attachment Plugs for Portable Heaters 9. Editorial Corrections in UL 1278 10. Additional Discussion Topic Regarding Mounting Hardware Requirements in UL 1278
March 20, 2015	View Summary of Topics m1042_5_20150320_sum.html Subject 1042 (1278, 2021) Bulletin Dated: March 20, 2015 SUMMARY OF TOPICS The following topics were discussed at the meeting of the Standards Technical Panel for Electric Room Heaters and Related, STP 1042: 1. Status Report of UL 1278 Task Group - Requirements for Smart Enabled Movable and Wall-or Ceiling Hung Electric Room Heaters 2. Clarification of Heaters Requiring Cord Tag Markings in Section 69.3 of UL 1278 2A. Additional Topic Regarding Updates to the References to “Authorized Service Facility” in Cord Tag Markings and Instructions 3. Wall-mounted Heaters Located Near Ceiling Height in UL 2021 4. Miscellaneous UL 1278 Revisions 5. Additional Topic Regarding a Proposal for Polymeric Materials Enclosure Requirements in UL 1278 6. Additional Topic Regarding the Allowed Use of “S” Type Power Supply Cords vs. “H” Type Cords in UL 1278 7. Additional Topic Regarding a New Requirement for Soldering Internal Connections in UL 1278 8. Additional Topic Regarding Wire Size AWG for Internal Wiring Based on Current in UL 1278 9. Additional Topic Regarding a Previous Task Group formed for Heater Plugs
March 19, 2013	View Summary of Topics m1042_5_20130319_sum.html Subjects 1042 (1278, 2021) Bulletin Dated: March 19, 2013 SUMMARY OF TOPICS The following topics were discussed at the meeting of the Standards Technical Panel for Electric Room Heaters and Related, STP 1042: 1. New UL 1278 Proposal - Elimination of Auto-Reset Temperature-Limiting Controls on Electric Heaters 2. New UL 1278 Proposal - Temperature Limiting Controls 3. New UL 1278 Proposal - Mounting Means for Portable, Wall and Ceiling Hung Heaters 4. New UL 1278 Proposal - Power Supply Cords 5. New UL 1278 Proposal - Wire Connectors Paragraph 18.3.3 6. New UL 1278 Proposal - Cord Type and Size 7. New UL 1278 Proposal - Section 18 Internal Wiring 8. New UL 1278 Proposal - Addition and Revision of Requirements to Relocate Component Standard References from Appendix A Into the Body of the Standard as Component Requirements 9. Discussion - Potential for Remote Control or Other Smart Enabled Considerations for Electric Heaters 10. Correction to New UL 1042 & UL 2021 Text 11. UL 1278 Maintenance Items 12. UL 2021 Maintenance Items 13. New UL 1278 Proposal - Wall-hung Heaters Located Near Ceiling Height 14. Discussion - Two Inactive Task Groups From Previous Meetings 15. Additional Meeting Topic Regarding the Deletion of -R Cord Requirements 16. Additional Meeting Topic Regarding a Specific Type of Tipover Switch 17. Additional Meeting Topic Regarding an Alternative Temperature Test Material for UL 1042, UL 1278, and UL 2021 18. Additional Meeting Topic Regarding the Possibility of Using Electronic Media for Manuals and/or Instructions 19. Additional Meeting Topic Regarding a General Discussion of Heater Plugs 20. Additional Meeting Topic Regarding Proximity Sensing for Movable Heaters

Bulletin

Bulletins

These bulletins are not used in CSDS. These are announcement and report type bulletins.

Summary of Topics (SOT)

March 08, 2016

View

Summary of Topics m1042_5_20160308_sum.html

Subjects 1042 (1278, 2021)

Bulletin Dated: March 8, 2016

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Electric Room Heaters and Related, STP 1042:

1. Status of Recent Ballot for UL 1278

2. New UL 1042 Proposal Regarding Clarification of Requirements for Heating Elements

3. New UL 1278 Proposal Regarding the Clarification of Alarms

4. New UL 1278 Proposal Regarding the Clarification of the Static Load Test for Hanging Means

5. New UL 1278 Proposal Regarding the Clarification of Requirements for Heating Elements

6. New UL 2021 Proposal Regarding the Clarification of Requirements for Heating Elements

7. Smart Enabled Portable Heaters

8. Attachment Plugs for Portable Heaters

9. Editorial Corrections in UL 1278

10. Additional Discussion Topic Regarding Mounting Hardware Requirements in UL 1278

March 20, 2015

View

Summary of Topics m1042_5_20150320_sum.html

Subject 1042 (1278, 2021)

Bulletin Dated: March 20, 2015

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Electric Room Heaters and Related, STP 1042:

1. Status Report of UL 1278 Task Group - Requirements for Smart Enabled Movable and Wall-or Ceiling Hung Electric Room Heaters

2. Clarification of Heaters Requiring Cord Tag Markings in Section 69.3 of UL 1278

2A. Additional Topic Regarding Updates to the References to “Authorized Service Facility” in Cord Tag Markings and Instructions

3. Wall-mounted Heaters Located Near Ceiling Height in UL 2021

4. Miscellaneous UL 1278 Revisions

5. Additional Topic Regarding a Proposal for Polymeric Materials Enclosure Requirements in UL 1278

6. Additional Topic Regarding the Allowed Use of “S” Type Power Supply Cords vs. “H” Type Cords in UL 1278

7. Additional Topic Regarding a New Requirement for Soldering Internal Connections in UL 1278

8. Additional Topic Regarding Wire Size AWG for Internal Wiring Based on Current in UL 1278

9. Additional Topic Regarding a Previous Task Group formed for Heater Plugs

March 19, 2013

View

Summary of Topics m1042_5_20130319_sum.html

Subjects 1042 (1278, 2021)

Bulletin Dated: March 19, 2013

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Electric Room Heaters and Related, STP 1042:

1. New UL 1278 Proposal - Elimination of Auto-Reset Temperature-Limiting Controls on Electric Heaters

2. New UL 1278 Proposal - Temperature Limiting Controls

3. New UL 1278 Proposal - Mounting Means for Portable, Wall and Ceiling Hung Heaters

4. New UL 1278 Proposal - Power Supply Cords

5. New UL 1278 Proposal - Wire Connectors Paragraph 18.3.3

6. New UL 1278 Proposal - Cord Type and Size

7. New UL 1278 Proposal - Section 18 Internal Wiring

8. New UL 1278 Proposal - Addition and Revision of Requirements to Relocate Component Standard References from Appendix A Into the Body of the Standard as Component Requirements

9. Discussion - Potential for Remote Control or Other Smart Enabled Considerations for Electric Heaters

10. Correction to New UL 1042 & UL 2021 Text

11. UL 1278 Maintenance Items

12. UL 2021 Maintenance Items

13. New UL 1278 Proposal - Wall-hung Heaters Located Near Ceiling Height

14. Discussion - Two Inactive Task Groups From Previous Meetings

15. Additional Meeting Topic Regarding the Deletion of -R Cord Requirements

16. Additional Meeting Topic Regarding a Specific Type of Tipover Switch

17. Additional Meeting Topic Regarding an Alternative Temperature Test Material for UL 1042, UL 1278, and UL 2021

18. Additional Meeting Topic Regarding the Possibility of Using Electronic Media for Manuals and/or Instructions

Electric Baseboard Heating Equipment

1 Scope

Summary of Topics

$505.00-$1,258.00

Revisions and Related Documents

Subjects 1042 (1278, 2021)

Bulletin Dated: March 8, 2016

SUMMARY OF TOPICS

Subject 1042 (1278, 2021)

Bulletin Dated: March 20, 2015

SUMMARY OF TOPICS

Subjects 1042 (1278, 2021)

Bulletin Dated: March 19, 2013

SUMMARY OF TOPICS

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