UL question for "outlet strips"

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wireguru

Senior Member
dont know if this is the right place, but is it a UL requirement for "outlet strips" or cord connected devices which have multiple receptacles to have a circuit breaker?

I can see where 15a rated devices should, but if the device has a 20a male plug on the cord, a 20a cord, all the internal wiring is rated for 20a, and the receptacles are 20a, i dont see why an intergal circuit breaker is necessary. Anyone have any input on this?
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
wireguru said:
im trying to find out if they can be made without the CB. I cant seem to find any.
I can make one for you. It will have a little hole in the case, if that's okay.
 

steved

Senior Member
Location
Oregon
I don't believe I've seen one without a circuit breaker, but according to the UL White Book it seems to be optional. They're listed under "Relocatable Power Taps (XBYS)" in the White Book.
 

iwire

Moderator
Staff member
Location
Massachusetts
wireguru said:
dont know if this is the right place, but is it a UL requirement for "outlet strips" or cord connected devices which have multiple receptacles to have a circuit breaker?

The UL white book shows overcurrent protection as optional.

RELOCATABLE POWER TAPS (XBYS)
USE AND INSTALLATION
This category covers relocatable power taps rated 250 V ac or less, 20 A or
less. They are intended for indoor use as relocatable multiple outlet extensions
of a single branch circuit to supply laboratory equipment, home workshops,
home movie lighting controls, musical instrumentation, and to provide
outlet receptacles for computers, audio and video equipment, and
other equipment. They consist of one attachment plug and a single length of
flexible cord terminated in a single enclosure in which one or more receptacles
are mounted. They may, in addition, be provided with fuses or other
supplementary overcurrent protection, switches, suppression components
and/or indicator lights in any combination, or connections for cable, communications,
telephone and/or antenna.
Relocatable power taps are intended to be directly connected to a permanently
installed branch circuit receptacle. Relocatable power taps are not
intended to be series connected (daisy chained) to other relocatable power
taps or to extension cords.
Relocatable power taps are not intended for use at construction sites and
similar locations.
Relocatable power taps are not intended to be permanently secured to
building structures, tables, work benches or similar structures, nor are they
intended to be used as a substitute for fixed wiring. The cords of relocatable
power taps are not intended to be routed through walls, windows, ceilings,
floors or similar openings.
Relocatable power taps have not been investigated and are not intended
for use with general patient care areas or critical patient care areas of health
care facilities as defined in Article 517 of ANSI/NFPA 70, ‘‘National Electrical
Code.’’


RELATED PRODUCTS
For relocatable power taps employing cord sets provided with leakage
current detection and interruption, see Cord Sets with Leakage Current
Detection and Interruption (ELGN).
For portable ground-fault circuit interrupters, see Ground-fault Circuit
Interrupters (KCXS).

ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary
Locations (AALZ).

REQUIREMENTS
The basic standard used to investigate products in this category is UL
1363, ‘‘Relocatable Power Taps.’’
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the
only method provided by UL to identify products manufactured under its
Listing and Follow-Up Service. The Listing Mark for these products
includes the UL symbol (as illustrated in the Introduction of this Directory)
together with the word ‘‘LISTED,’’ a control number, and the product name​
‘‘Relocatable Power Tap,’’ ‘‘Power Tap’’ or ‘‘Outlet Strip.
 

wireguru

Senior Member
Ok, heres the 2nd component to the equation. (btw thanks for posting that UL section, was very informative). The device in question is a rack mounted outlet strip, commonly used in computer rooms. Some of these have an ethernet connection and can monitor voltage and current, and some have relays to switch each receptacle on and off to reboot a frozen computer,etc. I dont think these are relocatable power taps since they are bolted into a computer rack, so what would they be? And at this point can they be made without a circuit breaker?
 

iwire

Moderator
Staff member
Location
Massachusetts
I know the type of equipment you are describing but I don't know what UL category they are listed under.

If you have a manufacturer and model number of one of these and we could look it up.
 
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