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  1. Further research has indicated that I do need to...

    Further research has indicated that I do need to derate when using NM.
  2. Using ROMEX® to feed subpanel, do I have to derate from Table 310.15(B)(6)

    I want to put a subpanel in the garage. According to Table 310.15(B)(6), I would need #4 Copper for a 100amp subpanel. Is this table for individual conductors in conduit or can you use ROMEX® to feed...
  3. Thank you. I worded my question poorly and you...

    Thank you. I worded my question poorly and you confirmed my understanding of one neutral per hole. How would I know if the bus bar is rated for multiple grounds per hole? It is a SquareD Homeline...
  4. Main Service Panels separate neutrals but multiple grounds in bus bar

    I just want to confirm that in my main service panel I am suppossed to put the neutrals in individual holes of the bus bar but multiple (2 or 3) grounds can go in an individual hole. Is this...
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    It is definitely a floor sink about 10" square by...

    It is definitely a floor sink about 10" square by 12" deep. I put the sink in myself before we poured the concrete. Putting a utility sink in the mechanical room is an idea that came up later. We...
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    Using a Floor Sink for a utility sink drain

    My mechanical room has a floor sink with 2" pipe, a trap, and vent. It was installed to be a condensate drain. It goes to the septic.

    I am considering putting a small utility sink in the...
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    No, it does not. It is a standard well bladder...

    No, it does not. It is a standard well bladder tank.

    I am starting to get the feeling that there is not a consensus on this subject.

    IMO, If I put a small expansion tank on my HWH and set it...
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    My question is does my 120gallon bladder tank...

    My question is does my 120gallon bladder tank qualify as a thermal expansion tank? In my opinion it should, but I am not a plumber.
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    The bladder tank is on the house side. Thanks...

    The bladder tank is on the house side. Thanks for your help.
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    Thanks for your response. In my case, the well...

    Thanks for your response. In my case, the well expansion tank is in my basement downstream from the check valve. So, the hot water heater is connected directly to the well tank.

    Mike
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    Well and Hot Water Expansion Tank

    I live where we are governed by UPC. I have a standard well system (not constant pressure) that operates between 30-50psi. The system is closed because there is a check valve where the water supply...
  12. Loop of wire outside of boxes. Is this normal?

    The carpenter framing my house says his electrician leaves a loop of wire outside of the box. I assume it is in case the drywall installers damage the wire, so more could be pulled inside the box. ...
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    Thanks for your help

    Thanks for your help
  14. Replies
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    Intermixing wire size

    I am installing a generator transfer switch in the garage.

    My house is long and a main service panel feeds one half and a sub-panel feeds the other half. I want to put the master bedroom on the...
  15. Thank you...Yes, I had originally planned on...

    Thank you...Yes, I had originally planned on having three 2 inch vents in separate areas of the house (master bath, main bath, and kitchen/laundry). But while reviewing my cheat sheet just tonight I...
  16. Tying together branch vents in attic question

    I am owner/builder trying to get my rough-in plumbing complete. We are governed by UPC. I finished the master bath venting and wanted to confirm that what I did was OK. I ran a 2-inch main vent...
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