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Old 12-07-2010, 04:55 PM   #1
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OK, think I have this right - wiring plan for finished basement


I think I have this right - please let me know what you think!

My township adheres to IRC 2009, so I have tried to use this as a reference. I have a few questions, and self-comments, but more eyes are welcome!

1) I am probably going to just bump everything to 12/2 and 12/3 from 14/2 and 14/3 since it is a minimal change in cost, but makes materials easier to buy...
2) My house is currently wired for smoke detectors, but the breaker is not AFCI - I assume I need to swap that out?
3) Red lines are 14/2 NM 120v on 15A breakers, green are 12/2 NM 120v on 20A breakers, and purple is 12/2 NM 240v on 20A breakers, and orange is 14/3 NM 120v for 3-way switching (but as I mention above, I will probably run all 12/ anyways)
4) Where else is ACFI needed? This is a below-grade basement, no bedroom, just an office and playroom. I would like to avoid them if possible as they interfere with powerline control (X10) messaging for automation.

Obviously all edits and the final coloring scheme will be reflected in a legend as well.



Any help is appreciated!

Thanks,

Bob

[Edit: Typo in legend - purple lines are 12/2, 240v on 20a breaker)


Last edited by orcusomega; 12-07-2010 at 10:10 PM.
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Old 12-07-2010, 09:19 PM   #2
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OK, think I have this right - wiring plan for finished basement


Couple of comments, only one smoke is required for this level.

You have 3 1250 watt heaters shown in the game room. You will need to run more circuits for these. Are these 240 volt? You may also want to spread the heaters out more evenly to avoid cold spots.

I will look more tomorrow when not so tired

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Old 12-07-2010, 09:37 PM   #3
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OK, think I have this right - wiring plan for finished basement


Thanks for the first pass!

The reason, as it was explained to me, is that as each room is fully isolated from the other, one is needed per room. So with that in my head, I still dont know the reason why i put two in the game room - good catch

As for the heaters, thats copy/paste error . The 1250 goes in the office, and 1000's in the game room. The specs from the manufacturer is 5amps per unit on a 20 amp circuit. I will check on that in the morning as well - thanks a ton!

Bob
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Old 12-07-2010, 09:48 PM   #4
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OK, think I have this right - wiring plan for finished basement


Is the heater circuit 240v ?
1000w/120v = 8.3 a....240v = 4.16a
1250w/120v = 10.4a....240v = 5.2a

Keep in mind box fill when switching to #12 wire
Also #12 is a little bit harder to work with ...bending...and light leads are usually smaller gauge

AFCI is required under NEC 2008 in a finished basement
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Old 12-07-2010, 10:05 PM   #5
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OK, think I have this right - wiring plan for finished basement


Teach me to stay up until 3:30 figjting Visio trying to get this done - sleep deprivation clearly is not good for me...

In my original post I mixed up the legend info - the purple circuits are 12/2 240v on a 20a circuit, and green is 12/2 120v pn 20amp circuit...

As for AFCI, which circuits do not need them? Or do they all? If i use AFCI breakers, do i still need GFI outlets anywhere?
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Old 12-07-2010, 10:08 PM   #6
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OK, think I have this right - wiring plan for finished basement


Check out this thread for what needs AFCI/GFCI
Finished floor - carpeted or tile/other ?

NEC- National Electric code 2008
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Old 12-07-2010, 10:19 PM   #7
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OK, think I have this right - wiring plan for finished basement


Wow - good info, thanks! Just realize you inadvertantly solved a framing issue, my clearance around my panel is currently insufficient. I'll just make it a closet access sorta deal

So if I read what you sent me rigjt, then since it is neither a garage nor an exterior application, then ally circuots must be AFCI and not GCFI?

Oh, and the plan is for a carpeted floor.

Bob
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Old 12-07-2010, 10:24 PM   #8
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OK, think I have this right - wiring plan for finished basement


Correct ....AFCI for everything
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Old 12-07-2010, 10:51 PM   #9
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OK, think I have this right - wiring plan for finished basement


And let me add one more thing in here in unfinshed basement it have to be GFCI protected so the inspector will take a look at it.

And if you going with drywall run a empty conduit to the unfinshed basement so that will serve as spare conduit in case you have to add something along the way so you don't have to tear into the drywall or else.

As far for the load centre you can install a 30 inch door and bump out the wall just enough space to work around that will useally slove majorty of issue.

Merci,
Marc
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Old 12-07-2010, 11:08 PM   #10
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OK, think I have this right - wiring plan for finished basement


Ok, here is the latest version based on everyone's feedback...


  1. I edited to show door access to service panel - this will be more accurately reflected on the building plans, but thanks for the catch!
  2. I corrected the legend, and added notes
  3. I changed all outlets to 20A, and lighting to 15A, and notes all circuits will be ACFI.
  4. As for the conduit, this will be a drop-ceiling, and the joists are wide open above the ceiling tiles - running circuits (or accessing piping, etc) will not be any problem at all - but thanks for making sure I didn't cause more work for myself down the road!
  5. I have NOT annotated for the GCFI in the unfinished basement section, but I am unsure of how to put that onto both ACFI and GCFI protection. Suggestions?
Guys, thanks a ton for the help!

Bob
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Old 12-08-2010, 08:56 AM   #11
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OK, think I have this right - wiring plan for finished basement


AFCI protection is provided by the breaker. The GFI component can be added with a GFI receptacle. The GFI protection is only needed in the unfinished portion of the basement.

My personal preference would be to place the smoke closer to the base of the stairs so that if any smoke starts to go up it would hit that alarm and give notice upstairs.

The AFCI would not be needed on the 240 volt circuits.

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