Q & A for Ask the Experts

Sizing Tri-plex: What size of tri-plex from a may pole service to a different building with a 200 amp. panel.

Service Change with Existing Panel in Bath: I will be doing a service change (upgrade) where the existing panel is located....

Sub-Panels: In a commercial building, can I add a sub panel with main lug 12 breakers to existing panel 200 amps....

AFCI Breakers: I have an AFI that will not hold. It protects the wall sockets, two closet lights,...

Business in Trouble: I helped start his electrical corporation in 2002. We where told at the time that the company would not be able to gain much credit....

Three Phase Delta Transformer: On a three phase delta transformer, secondary side, what is the purpose and/or advantage of grounding....

State License Transfer: I am planning to move to Ohio.  What has to be done to transfer my license...

Sizing Bus Duct:  What is the proper way to size Bus Duct?"

Service Drop Downsizing: Ok, I put in a 200 amp service, using 4/0 alum, but I discovered the underground service drop from consumers is only 1/0. Shouldn't I be able to downsize?

Multiple Utility Metering: In a multiple occupancy strip mall, the owner wants to knock down a common wall and make a large suite?

Redundant Grounding: I would like to see more details on test used to hint that health care facilities really need redundant grounding.