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sub-panel
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  1. Electrical
    Hello everyone. First time poster here. I am planning an electrical project to add a 240v/120amp sub-panel to a shop and I'm looking for some guidance for what gauges of cable I will need. I have been trying to understand the formulas and tables in the NEC but i hasn't clicked for me yet. A...
  2. Electrical
    Can anybody tell me if there are any restrictions/requirements or best practices for running the supply wire from a main service panel to an adjacent sub-panel? Here are my options: Option #1 and #2 - Sub-panel main lugs at top of panel. Service wire can enter from side of sub panel or...
  3. Electrical
    I have installed an outdoor sub-sub panel to a sub-panel in my basement. I ran a 3-wire (B,R,W,G) to the sub-sub panel. The basement sub-panel has a common wire bus bar, as does the sub-sub panel. The sub-sub panel circuits are only 2-wire 240v connections, no white/common wire necessary. My...
  4. Electrical
    I am installing/connecting a new outdoor 240 volt 60 amp sub-panel to an existing 200 amp sub-panel in my basement. The 200 amp feeder sub-panel has 2 hots, a connected common bus bar, and a ground bus bar. All circuits in this sub-panel are two-wire, there are no connections at all to the...
  5. Electrical
    I'm installing a 240v sub-panel outdoor on a pole to service a well and a compressor. The feeder wire from a main panel in my basement has a ground wire which I will connect to the sub-panel's grounding bar (along with the two component's grounds). I plan on installing two copper ground rods...
  6. Electrical
    I'm installing a 240 volt sub-panel that will service a 15 amp compressor and 20 amp well pump. I'm running 6 gauge feed wire to the panel. My question is do I have to stay with 6 gauge wiring from the sub-panel to each component, or can I use 12 gauge wire since it is a short run of only a...
  7. Electrical
    I bought a house where the previous owner had finished the basement. I am remodeling it and saw numerous electrical issues including: shared neutrals on single pole circuits, overstuffed junctions boxes, outlets added to dedicated circuits and 14g wire on 20A circuits. I remediated all I could...
  8. Electrical
    Hello folks, have a question for those electrical pros out there. I have a 2-phase 200amp main service with an 8/4 run of about 50ft to a sub-panel in my garage on a 2-pole 40amp breaker. Yes, ground/neutral are split properly. Question is, if I wanted to extend from this panel to a pool house...
  9. Electrical
    Hello everyone. I want to add three new circuits to the attached garage (110V; 20A/15A/15A). The only way I can run them is outside the house in wall attached RMC . Between the (main) panel and planned conduit entrance to garage is approx 45-50 lf of conduit run. Question about best practices...
  10. Electrical
    Hello, I'm adding a new kitchen in my basement. Since my 125a main panel is just about full, I'm planning to add a sub panel to wire up the new circuits. I've purchased a 200a main breaker panel for this purpose because I'd like to be able to upgrade my service to 200a down the road (the price...
  11. Electrical
    Hello, I have a 200 amp panel in my house. Power to the detached garage comes from this panel through a 100 amp breaker which connects to a 100 amp service panel in the garage (which also has a 100 amp breaker as a main switch). The wiring runs underground. I've lost all power in the detached...
  12. HVAC
    I have an old fuse box installed near my gas heating system boiler (which heats two zones: house and den). The fuse box contains two 15 A fuses, installed in a ceramic fixture. From one fuse (on the left) a line (Romex) runs to an on-off switch installed at the boiler. From the other fuse...
  13. Electrical
    My home was built in Dec. of 2005 with a main panel outside and a 70 AMP service in a sub panel in my garage. I need to add 240V/30AMP service in my garage for a new compressor and there's no room in the main panel outside and only "one" slot in the sub-panel in the garage. One side of the...
  14. Electrical
    Hi New to forum - got a bid from an electrician to replace my outdated sub panel. I was told when negotiating contract they would be using a Square D panel. Today when I went to see how my install was going they had put in a Eaton BR Cuttler Hammer panel. When I questioned them they gave me a...
  15. Electrical
    I recently wired my shop and the only hangup I'm having is hooking it up to the main fuse box in the house. The main panel is a 200a old style fuse box that was put in when the house was built in 1972. All of the wiring to/in my shop is in conduit and I installed a 125a main lug breaker box with...
  16. Electrical
    Hello All, I have a quick question, after 6 months of building my "storage barn" is now complete and I am ready to get power to it. 275' run from main panel (in home which is main structure on property) to the barn. My plan is as follows: Main Panel in basement of home; install 100amp 2P...
  17. Electrical
    Please correct me where I am wrong. I am adding a disconnect sub-panel in to my Work Shed and could use some recommendations. This will be our 3rd winter in this house. Last winter, I tripped the circuits several times while running to many machines at the same time. (eg. table saw, shop-vac...
  18. Electrical
    While installing and wiring some new circuit breakers I accidentally touched a bare/ground wire to a "hot" metal strip in the sub-panel breaker box (installed by a licensed electrician). A big spark happened and one breaker popped. I turned all power off to this breaker sub-panel and then...
  19. Electrical
    Hi all, I have experience working with electrical, wiring up unfinished basements but this will be my first time installing a subpanel. My main breaker is located on the far side of my attached garage (which is sheetrocked) and I am planning on running the power to my unfinished basement that I...
  20. Electrical
    Hello Electric Experts, I have questions, questions and more questions. I am planning to extend my 200A main panel to a sub-panel about 40 feet away. The sub-panel will power three (for now) space heaters . All heaters are 240 VAC appliances and require 15A, 15A and 25A. I expect to connect...
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