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About Bruce Grant
Expertise
I can answer any questions about residential electrical wiring and most questions about commercial wiring. In my own business, I insist on using best practices in all work we do (which to me means "to Code" or BETTER, using the most recommended ways to do things).
Experience
I'm 65, but learned wiring basics as a teenager. I only used this knowledge for myself, friends and family until early 2002, when economic downturns suddenly made my 30 years in IT irrelevant. Through the Internet, I bought many books on wiring and electrical code and switched careers, becoming an unlicensed electrical contractor, carpenter, and handyman. I now know, after 7 years in the industry, everything I need to get a California C-10 License except some of the Industrial wiring stuff (which I'll probably never use, but need to pass the test). The main reason I haven't yet obtained the License is lack of funds to pay for it and the required insurance. Eventually, I'll get it.
Education/Credentials
* BS in Physics and Mathematics from Oregon State University, 1967
* Primarily self-taught from books written for electrical and construction pros, but also informal training from more experienced pros
Past/Present Clients
homeowners and small businesses in the San Francisco Bay Area, mainly on the S.F. Peninsula
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You are here: Experts > Home/Garden > Home Improvement/Repair > Electrical Wiring in the Home > Main disconnect
Expert: Bruce Grant - 11/1/2009
Question
Happy Halloween!
New construction, SIPS not stick frame. Meter base going on outside garage wall, with main panel directly behind it (i.e., back to back). SE cable in conduit straight through wall in conduit to panel. Is a main disconnect required outside, in addition to the 200 amp main breaker in the panel, which is inside the garage? Thanks!
Answer
John,
Code requires an outside disconnect switch, even if the Main Breakers can act as one. That is because of the need, in case of fire, for firemen or police to shut off power to the house to prevent electrocution hazards that exist in fires, particularly from water used to quench the fires. Access to an inside electrical panel may not be safe during a fire, whereas an outside disconnect switch is easily accessible in most cases. The cost for the switchbox and switch itself is negligible.
Bruce
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