All Questions
18
questions
0
votes
1
answer
138
views
Do I need to use 60 degree C ampacity rating for feeders to 60 amp subpanel?
I calculated my wire size for feeders to a 60 amp subpanel, for a pump house, based on 75C column of ampacity chart. Terminals out of main and into subpanel are both rated 75C. But then I saw ...
- 101
1
vote
0
answers
44
views
Is old subpanel wiring configuration to code?
I opened an old subpanel and this is how it is wired. The fuses are all 30 amp, tube-style fuses.
What is the purpose of connecting the two left-most lugs?
Is that intended to increase amps?
Is this ...
- 101
13
votes
3
answers
3k
views
Can I use a 125A panel with a breaker and wiring sized for 90A?
I have a detached garage. I would like to run power to it and have a 400 amp service on my house. I already have a bunch of 2-2-2-4 aluminum ser wire, which I know is only good for 90 amps.
I have ...
- 131
1
vote
3
answers
292
views
Can I run an electric conduit through abandoned dryer duct?
I relocated my dryer from the garage. The old duct is approximately 5 inches in diameter and runs under my house, through the cement slab, from the garage on the west to the outside of the house on ...
- 51
1
vote
2
answers
3k
views
What size wire for a 200A panel in a shed?
I have put in a 200 amp panel in the shed and will run a mini-split A/C unit (25 amp draw), a computer, and a few LED lights. What size wire do I need to run from the house main panel to the shed. I ...
3
votes
3
answers
850
views
Should I run RMC all the way from panel to sub-panel, or are there cheaper options?
I am running a 60 amp circuit to a shed about 100 feet from our main panel. I'll be running 3 #6 copper wires in a 3/4" rigid metal conduit down a trench with 6 inches of cover (hand dug, and I ...
- 275
3
votes
1
answer
2k
views
Sub panel feeder circuit wire sizing
I’m planning to upgrade the service in a detached garage, which is currently fed by a single 15amp circuit, and I wanted to confirm that I have my circuit sizing correct. The existing circuit runs ...
- 33
3
votes
3
answers
5k
views
Calculating subpanel breaker size
I'm building out a shop (within the same building as the main panel) and I'm considering adding a sub panel to make running circuits easier, and to make any future expansion easier.
I'm unsure how to ...
- 501
1
vote
0
answers
4k
views
Is it ok to run a 100 amp sub panel off a 150 amp main panel?
I'm installing a GE 100 Amp MLO panel about 50 feet from the main panel in a different building that's about 700 sq/ft.
I'm pulling three #3 in 1-1/4" PVC with a #6 ground. The main is a 150 ...
- 11
7
votes
2
answers
1k
views
Was this installed to code and is it still to code?
In 1995 an electrician who was also a friend of the family helped me out by installing a sub panel in my garage. He tapped the feeder cable directly into the main lugs in the main box and ran them to ...
- 47.7k
1
vote
1
answer
166
views
Can a single set of conductors feed utilization equipment *and* a subpanel simultaneously under the NEC?
So, let us assume we have a set of conductors (hot/neutral/ground) going off to some piece of utilization equipment. Can I also run a set of conductors of appropriate ampacity off this circuit to a ...
- 84.5k
3
votes
2
answers
2k
views
electrical work: create "future boxes" - is this to NEC code?
I would like to run cable for an in-wall heater but not actually connect to the heater right now, I just want to get the cable run and connected to the sub-panel (along with all the other cables that ...
- 211
3
votes
2
answers
46k
views
Conduit Size for Sub-Panel run?
I have old overhead wires that go between my home and a detached garage. The plan is to remove the overhead wires and install a new sub-panel in the garage with an underground (PVC 80) run between the ...
- 31
1
vote
1
answer
11k
views
How to determine what type and gauge of wire should used for underground wiring to a detached subpanel?
I Will be installing a subpanel in a detached garage. The subpanel will be 60 amp. The garage is about 30' from the main-panel in-house, and I will of course get an exact length before selecting the ...
- 1,084
2
votes
4
answers
51k
views
How do I determine the fill rating of a conduit?
I Will be installing a subpanel in a detached garage. The subpanel will be 60 amp. The garage is about 30' from the main-panel in-house, and I will of course get an exact length before selecting the ...
- 1,084