Timeline for Wire for 100 AMP Detached Garage Subpanel. 50 feet direct buried 50 feet in crawl space
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 20, 2019 at 2:03 | comment | added | Harper - Reinstate Monica | Note the abstract, which discusses branch circuits. This is feeder. Yes, that is outlawed for all interior wiring. Now you must use the AA-8000 alloy, and nobody's going to use it for branch circuits if they like to ever sell their house, but it's fine for feeder. | |
| Aug 20, 2019 at 1:46 | comment | added | ThreePhaseEel | @Flinch -- most AHJs are fine with aluminum these days, given that in-building wiring types are generally required to use AA-8000 series alloys (vs. the finicky AA-1350/EC that got aluminum its bad rap) by NEC 310.106(B). Furthermore, the 2017 NEC took a major step towards addressing the true cause of termination burnouts by adding the 110.14(D) torquing requirement for all places where termination torques are marked on equipment labels. | |
| Aug 20, 2019 at 1:44 | comment | added | Pete Donaldson | Harper: Why schedule 80 vs 40. Flinch. I can see not using Aluminum for receptacles etc. I would guess improvements have been made in technique and wiring since 1974. Seems that almost all of the opinions I have reviewed recommend Aluminum on longer sub panel runs. Aluminum is what is the Panel coming from the Meter and feeding all of my HVAC equipment. | |
| Aug 20, 2019 at 0:49 | comment | added | Flinch | Right you are. I missed that on account of personal prejudice over the years - I never run aluminum for anything. Ever. Most state building codes have done away with it I think [except for temporary construction], and it can be a problem for your homeowners insurance regarding coverage. Here's a study that's more in depth [note the 1969 UL/NEMA survey on page 25]: nvlpubs.nist.gov/nistpubs/Legacy/IR/nbsir75-677.pdf | |
| Aug 20, 2019 at 0:10 | comment | added | Harper - Reinstate Monica | I think you mean 1 AWG aluminum, alternate 0 AWG. Your numbers would be fine for copper but he wants Al. | |
| Aug 20, 2019 at 0:05 | history | answered | Flinch | CC BY-SA 4.0 |