2006 UL White Book The 2006 UL White Book is much larger than the 2005, what has changed and how ...
Question: Switchboard Is it permitted to field drill a hole in the bus of a Listed switchboard, bolt on a ...
Question: Listing requirements for GFCIs I heard the Listing requirements are changing for GFCIs. What are the new requirements and ...
Question: EMT offset connectors A common practice I see in the field is EMT offset connectors screwed into hubs on ...
Question: MC cable I have heard there is a new type of MC cable with a bare aluminum grounding conductor. ...
Question: IAEI chapter and divisions and UL I know that UL provides strong support for the IAEI at section meetings, ...
Question: Retrofitted panelboard Can a Listed panelboard be retrofitted into an existing cabinet that may be cemented into an existing ...
Question: Painting receptacles Is it permitted to paint the face of a receptacle to match the paint in a room? ...
Question: Smoke alarms Many hard-wired smoke alarms illustrate the interconnection of smoke alarms in their installation instructions depicting 3 wires, ...
Question: Listed fire alarm systems Are fire alarms listed as a system and not just listed components? How can an ...