Standard: 1008 BULLETIN

UL STANDARD FOR SAFETY TRANSFER SWITCH EQUIPMENT

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Scope:

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). In Canada, this the requirements for BCELTS does not apply

This standard specifically does not apply to:

a) Double-throw switches for use in optional standby systems;

b) Switches used in equipment manufactured in accordance with Annex A1, Item 9;

c) In Canada, manually operated generator transfer panels in accordance with Annex A1, Item 12.

d) Transfer switches rated over 1000 V; and

e) Solid-state (static) transfer equipment;

f) Transfer switches for aircraft; and

g) Transfer switches for water craft

Organization: UL
Document Number: 1008 bulletin
Publish Date: 2018-01-19
Page Count: 26
Change Type: BULL
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active

Document History

Document # Change Type Update Date Revision Status
1008 BULLETIN Change Type: BULL Update Date: 2017-09-05 Status: ACTV
1008 BULLETIN Change Type: BULL Update Date: 2015-05-22 Status: ACTV
1008 BULLETIN Change Type: STCH Update Date: 2014-11-14 Status: INAC
1008 BULLETIN Change Type: STCH Update Date: 2014-11-07 Status: INAC
UL 1008 BULLETIN Change Type: STCH Update Date: 2014-07-14 Revision: 14 Status: ACTV
1008 BULLETIN Change Type: STCH Update Date: 2014-04-25 Status: INAC
1008 BULLETIN Change Type: STCH Update Date: 2013-11-01 Status: INAC
1008 BULLETIN Change Type: STCH Update Date: 2013-10-25 Status: INAC
1008 BULLETIN Change Type: STCH Update Date: 2013-09-13 Status: INAC
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