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I need to add a receptacle outlet to an existing line. I will run the line from an existing receptacle outlet. Is it okay to locate the new outlet below an existing window?

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Yes. As long as you have part of the wall under your window (your window doesn't go to the floor) then it is treated like any other wall in your house.

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Think we need to hear from one of the NEC gurus. MY guys won't install interior receptacles under opening windows now in new construction. – shirlock homes Mar 3 '14 at 23:17
@shirlockhomes - I have had three houses (one mine, two I am rehabbing) pass inspection the past 4 months. All have had multiple outlets under windows. All three cities used NEC 2011. Would like to hear if something has changed. Also one of mine wouldn't have passed the 6 foot rule without doing it. What would you do with rooms with very wide windows - which is becoming a trend in my area. – DMoore Mar 3 '14 at 23:21
I am curious, I really don't know the answer. I've had close-in inspections fail for outlets under a window. might be local, I'm not the NEC expert, but we have a couple of guys on here that are well versed. – shirlock homes Mar 3 '14 at 23:38
@shirlockhomes I don't think there is anything in the code that specifically says you can't put a receptacle under a window. However, I think it's common practice to avoid it where possible. The inspector might consider the area under a window a damp location, and so would require the outlet to meet those requirements. Next time you see the inspector, I'd ask him for a code reference. It may well be a local twist. – Tester101 Mar 4 '14 at 11:44
If it is true it is definitely a local amendment. If it is then it is the first I have EVER heard this. Nothing like this is in the NEC. I also don't think it is possible for an inspector to consider this a damp location. Even then it is treated no differently than any other interior room in a home. Think about bathroom receptacles. Personally I think it is just another case of a rogue inspector making up his own rules. – Speedy Petey Mar 4 '14 at 12:52

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