Are flat cord extension cords equivalent to hard usage or extra hard usage cord?
Yes. Convention center cord sets are required to be constructed with cord that is evaluated as being equivalent to extra hard usage or “Type S” cord.
(No Ratings Yet)UL Question Corner
(No Ratings Yet)Have any electric vehicle (EV) level 3 DC fast chargers been UL certified (Listed)?
Yes. A few manufacturers have had their electric vehicle DC fast chargers UL certified. Electric vehicle DC fast chargers can fully charge an electric vehicle battery in as short as 15 to 30 minutes. These fast chargers will most likely be installed at electric vehicle charging locations in public/commercial settings, such as traditional gas or service stations.
(No Ratings Yet)
Certified Ceiling Grids that Power Lighting Systems
Does UL List (certify) powered suspended ceiling grids that power lighting systems? Yes. UL certifies ceiling grids that power lighting systems under the UL product category Suspended-ceiling-grid Low-voltage Lighting Systems (IFFA) found on page 176 of the 2011 UL White Book.
(No Ratings Yet)LED Retrofits for Luminaires and Signs
Question: I see many kits to retrofit or convert incandescent and fluorescent luminaires and signs as well as neon signs to LED lighting sources. Does this impact the UL certification of these existing luminaires and signs? Does UL certify these retrofits and conversions kits?
(No Ratings Yet)Has UL investigated the effects of spray-on foam insulation on Type NM cable jackets or individual conductor insulation?
Has UL investigated the effects of spray-on foam insulation on Type NM cable jackets or individual conductor insulation?
(No Ratings Yet)When is the 2011 UL White Book available, and what is new for 2011?
When is the 2011 UL White Book available, and what is new for 2011?
(1 votes, average: 3.00 out of 5)Can a manufacturer add labels to a UL Listed product in the field, even if the label is not a Listing Mark?
No, when you add labels to a Listed product after it leaves the factory, it is considered a Field Modification. The product was never reviewed to determine if the attribute identified on the added label or marking is accurate or continues to comply with UL’s requirements.
(1 votes, average: 5.00 out of 5)Is there anywhere I can get a repository of UL Question Corner columns in one place and organized by topic?
Yes, UL has a repository of UL Question Corner columns going back to the year 2000 located on UL’s recently enhanced Code Authorities web pages located at www.ul.com/codeauthorities.
(No Ratings Yet)Can I install a general use ordinary location ICP to control a circuit that extends into a hazardous classified location?
Can I install a general use ordinary location Listed industrial control panel (ICP) to control a circuit that extends into a hazardous classified location? If not, what ICPs are suitable for use in this application and how can these panels be identified? Are these the same as ICPs that are Listed for installation in the hazardous area?
(No Ratings Yet)Are there certified AFCIs that can be installed into another manufacturer’s panelboard?
Does UL certify combination AFCI circuit breakers that are intended for use in another manufacturer’s panelboard? If so, how can one identify these products and the panelboards in which they can be installed?
(No Ratings Yet)
