COMarcus
New member
- Location
- Denver, CO
Good morning all.
New to the forum and have been digging around quite a bit hoping to find my answer. I'm a homeowner with a valid homeowner permit in the city of Denver. Very familiar the workings of electricity and can ready NEC, but not an electrician by trade so have a couple of questions.
I'm a passionate woodworker, just moved into a new home and half the basement is being used for my shop. Trying to determine the load calc for the subpanel and could use some advice. Some info on the circuits I am planning on adding and equipment. Planning on running 3 separate 20 amp 240v circuits for a table saw, jointer and planer. I dont necessarily plan on ever running these simultaneously, but would rather be safe than sorry. Running a 20 amp 120v light circuit, two 20 amp 120V circuits for outlets, 10 outlets each. I plan on running 5 specific use 20 amp 120v outlets for specific use outlets for equipment pulling between 10 and 16 amps. Once again, I dont plan on running these at the same time, but I could very easily have my lathe running along with my grinder and dust collector, so would like to keep these separate. Ideally what I would like to do is to daisy chain another subpanel into the current unfinished portion of the basement for future use. I get a workshop, my wife may want a room of her own some day!
So have a 200amp main, planning on running a 100amp sub panel off of that and then a 50 amp sub panel off the 100 amp. Logically speaking, in my head this is more power than I will ever be using. Officially though with a load calc, am I right? From my understanding of NEC, all I would need to have for a minimum is my sq ft (480 sq ft) * 3Va/120V = 12 A since I do not have any continuous use/hardwired items, no small appliance branches for a kitchen, no HVAC. Obviously this makes very little sense though in practice. Is there something I am missing or is this just a barebones minimum and common sense should prevail here and 100A makes more sense?
Thanks in advance for your help.
New to the forum and have been digging around quite a bit hoping to find my answer. I'm a homeowner with a valid homeowner permit in the city of Denver. Very familiar the workings of electricity and can ready NEC, but not an electrician by trade so have a couple of questions.
I'm a passionate woodworker, just moved into a new home and half the basement is being used for my shop. Trying to determine the load calc for the subpanel and could use some advice. Some info on the circuits I am planning on adding and equipment. Planning on running 3 separate 20 amp 240v circuits for a table saw, jointer and planer. I dont necessarily plan on ever running these simultaneously, but would rather be safe than sorry. Running a 20 amp 120v light circuit, two 20 amp 120V circuits for outlets, 10 outlets each. I plan on running 5 specific use 20 amp 120v outlets for specific use outlets for equipment pulling between 10 and 16 amps. Once again, I dont plan on running these at the same time, but I could very easily have my lathe running along with my grinder and dust collector, so would like to keep these separate. Ideally what I would like to do is to daisy chain another subpanel into the current unfinished portion of the basement for future use. I get a workshop, my wife may want a room of her own some day!
So have a 200amp main, planning on running a 100amp sub panel off of that and then a 50 amp sub panel off the 100 amp. Logically speaking, in my head this is more power than I will ever be using. Officially though with a load calc, am I right? From my understanding of NEC, all I would need to have for a minimum is my sq ft (480 sq ft) * 3Va/120V = 12 A since I do not have any continuous use/hardwired items, no small appliance branches for a kitchen, no HVAC. Obviously this makes very little sense though in practice. Is there something I am missing or is this just a barebones minimum and common sense should prevail here and 100A makes more sense?
Thanks in advance for your help.
