UL Solutions Question Corner – Page 14

I am a Canadian electrical inspector and want to know what is the UL White Book and is there a UL White Book for Canada?

Question: Canadian UL White Book I have read many times in the UL Question Corner column references to the UL ...

I was told that I could not plug one extension cord into another on a construction site. The NEC does not seem to prohibit this practice. Where do I find such information?

Question: Extension cord daisy chaining I was told that I could not plug one extension cord into another on a ...

Does UL List the spiralshaped compact fluorescent lamps (e.g. light bulbs)?

Question: Spiralshaped compact fluorescent lamp Does UL List the spiralshaped compact fluorescent lamps (e.g. light bulbs)? Can they be used ...

Are all split bolt clamps Listed to be used for connecting copper grounding electrode conductors to steel rebar direct buried in earth, and if so how can these clamps be identified?

Question: Split bolt clamps Are all split bolt clamps Listed to be used for connecting copper grounding electrode conductors to ...

I see that the 2006 White Book now includes an index that correlates the 2005 NEC to UL product categories, is there a UL code correlation database online that I can access?

Question: UL code correlation database I see that the 2006 White Book now includes an index that correlates the 2005 ...

The Index of UL Product Categories Correlated to the NEC-2005 seems like a great tool, how do I use the index to determine compliance with the NEC?

Question: UL product categories In the September-October 2006 edition of the “UL Question Corner” you detailed many changes to the ...

Are low-voltage landscape luminaires (lighting fixtures) Listed to be installed in the ground 3 feet from a swimming pool?

Question: Low-voltage landscape luminaire Are low-voltage landscape luminaires (lighting fixtures) Listed to be installed in the ground 3 feet from ...

I know you can use only one conductor per terminal in a wire connector on a molded case circuit breaker and other distribution equipment unless the equipment is marked otherwise; however, I can’t find

Question: One conductor per terminal I know you can use only one conductor per terminal in a wire connector on ...

The 2006 UL White Book is much larger than the 2005, what has changed and how do I use the White Book in the field?

2006 UL White Book The 2006 UL White Book is much larger than the 2005, what has changed and how ...

What happens if I use the factory provided holes in the bus?

Question: Switchboard Is it permitted to field drill a hole in the bus of a Listed switchboard, bolt on a ...