For those who may have questions, here is some technical information.
It is widely debated as to whether Romex can be used in conduit. The issue that is referenced is heat build up due to the conduit trapping heat. This claim pretty illogical considering Romex is frequently run in places full of insulation.
In terms of code, the NEC does not prohibit this. Romex is only banned in wet/damp locations. In fact, the NEC states “Cable shall be protected from physical damage where necessary by rigid metal conduit, intermediate metal conduit, electrical metallic tubing, Schedule 80 PVC conduit, Type RTRC marked with the suffix -XW, or other approved means. “ (referencing type NM cable). Ultimately, it depends on local regulation. In my jurisdiction, this is a perfectly compliant installation. However if I were to do this again, I would likely use THHN since it’s much easier. Check with local codes before installation.
Another concern people maybe have is box fill. I checked to ensure these boxes were not overfilled. With the maximum of 2 devices and the conductors/grounds, the required allowance is 20.25 cubic inches. The 4x4 square boxes I’m using are 21 cubic inches by themselves and the exposed work covers I used also have additional volume. Again however, it would have been much easier to use deeper boxes.
One last point I would like to address is the use of different wire connectors. Wire nuts are common in the US, however for some parts of this video I did choose to use wagos. Some people do think wagos are hazardous, but factually this is not true. They are a professional standard is virtually any other developed country and are rated to carry a certain number of amps. They are also much flatter and take up much less space in a box than wire nuts. Plus they don’t deform the wire which makes them much more versatile and troubleshooting easier. I am not sponsored, but I will certainly be using wagos much more. I believe both have a place in my toolbag.
Thanks for watching this video.
20 авг 2023
