Okay, let's break down the rules regarding the placement of your outdoor disconnect.1. Distance from Meter to Outdoor Disconnect (8-foot Rule)



This is NOT a universal NEC (National Electrical Code) rule. The "8-foot rule" is often a local utility or jurisdiction rule, not a nationwide NEC requirement. It's usually related to the utility wanting easy access to disconnect power in case of emergencies or non-payment. You MUST confirm this rule with your local utility and/or the local electrical inspector. This is absolutely crucial. Do not proceed based on assumptions. Call the utility company and the electrical inspector's office in your jurisdiction. Ask them specifically about their requirements for the distance between the meter and the main disconnect. They will often have written guidelines or specific interpretations.2. Distance from Outdoor Disconnect to Indoor Panel (Basement)



NEC Considerations

The NEC generally doesn't impose a specific maximum distance within your house between the outdoor disconnect and the indoor panel. However, the following NEC sections and considerations become relevant:

230.70(A)(1) Location

The disconnecting means must be installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the conductors. This is the main consideration.

230.70(A)(3) Access

The disconnect must be readily accessible. This means it shouldn't be blocked by anything that would prevent easy access.

Voltage Drop (210.19(A) FPN No. 4) The FPN recommends that the maximum voltage drop should not exceed 3% for feeders and 5% for feeder and branch circuits combined. While not a code requirement if the voltage drop is excessive, it can lead to problems with equipment operation and efficiency. Longer runs will have more voltage drop. Factors to Consider for Indoor Run



Conductor Size

The longer the run from the outdoor disconnect to your indoor panel, the more important it is to calculate voltage drop and ensure that your conductor size is adequate to carry the load without excessive voltage drop. You might need to upsize the conductors for a longer run.

Wiring Method

The wiring method (e.g., conduit, cable) needs to be appropriate for the environment it's in (e.g., damp basement, exposed wiring). Conduit is a very common and safe choice for this type of run.

Physical Protection

The conductors need to be protected from physical damage. This is particularly important if the wiring is exposed in areas where it could be easily damaged (e.g., a garage or workshop).

Securing and Support

The conductors must be properly supported and secured to the building structure per NEC requirements.

In summary


Verify the 8-foot Rule

Contact your local utility and electrical inspector. This is the most critical step.2.

Indoor Run - No Specific Distance Limit (Generally)

The NEC doesn't typically impose a strict maximum distance for the indoor run, BUT distance is a factor in other code requirements.3.

Voltage Drop

Calculate voltage drop, especially for longer runs. Upsize conductors if needed.4.

Proper Wiring Method, Protection, and Support

Ensure the wiring method is appropriate, conductors are protected from physical damage, and wiring is properly supported.5.

Permits and Inspection

Obtain the necessary permits and schedule inspections to ensure your work complies with all applicable codes and regulations.

Example Scenario (Illustrative)

Let's say the utility does enforce the 8-foot rule (or a similar rule). You place the outdoor disconnect within the allowed distance. You want to run the wiring to the basement panel, which is 50 feet away. You'll need to calculate the voltage drop for that 50-foot run, considering the anticipated load (200 amps is a substantial load). Use a voltage drop calculator (many are available online). You might find that you need to use larger conductors (e.g., 250 kcmil) instead of a smaller size (e.g., 4/0 AWG) to keep the voltage drop within acceptable limits. You'll likely use conduit (e.g., PVC or EMT) for physical protection and to allow for future wire replacement if needed. You'll need to properly secure and support the conduit run per NEC requirements.

Crucial Reminder: I am an AI and cannot provide electrical advice. You MUST consult with a qualified, licensed electrician for all electrical work. They can perform the necessary calculations, assess your specific situation, and ensure that the installation meets all applicable codes and regulations. Improper electrical work can be dangerous and can result in fire, injury, or death. It can also void your insurance. Always obtain the necessary permits and schedule inspections. This helps ensure that the work is done safely and correctly. Follow all local codes and regulations. They may be more stringent than the NEC.Good luck with your project! Be safe. Flag for review