Okay, let's break down what you're seeing and address your questions about these electrical installations in Maine.

What it likely is

Based on your description of conductors with an outer covering, used frequently for utility drops, and your photo (assuming I can view the images), it's most likely

Service Entrance Cable (SE Cable), specifically Type SE, Style R (SER). Here's why: Service Entrance

SER cable is designed for use as service entrance conductors from the utility drop to the service equipment (main panel). It's common in overhead and underground services.

Conductors with outer covering

SE cable consists of insulated conductors wrapped with a reinforcing layer and a moisture-resistant outer jacket.

Eastern Seaboard

It's a common practice in many areas of the Eastern United States.

Is it approved for outside use? Yes, SER cable is specifically rated for outdoor use. The outer jacket is designed to withstand weather conditions, including sunlight (UV radiation) and moisture.

Should these runs be enclosed in a raceway? Generally, no, it is not required to be enclosed in a raceway along its entire run outdoors. SER cable is rated and intended to be exposed. However, there might be situations where a raceway is required or recommended: Physical Protection

If the cable is subject to physical damage (e.g., in a high-traffic area or where it could be hit by equipment), a raceway (EMT, rigid conduit, etc.) is often a good idea to protect the conductors.

Specific Local Codes

It is always crucial to check with the local electrical inspector or building department. Some jurisdictions might have more stringent requirements than the National Electrical Code (NEC) that require raceway in certain circumstances.

Aesthetics

Some people prefer the look of conduit, even if it's not technically required.

Important Considerations and Things to Verify


Type of SE Cable

There are different types of SE cable (SER, USE). Make sure it's the appropriate type for the application. If it's buried, it must be USE (Underground Service Entrance).2.

Securement and Support

SE cable needs to be properly supported and secured along its run, following NEC guidelines and manufacturer's instructions. This often involves using appropriate straps or clamps at specified intervals.3.

Clearances

Maintain proper clearances from the ground, windows, doors, and other structures, as required by the NEC.4.

Local Codes and Inspections



This is the most important point! Electrical codes can vary significantly by location. Always check with the local electrical inspector or building department in Maine to confirm the specific requirements in that jurisdiction. They can tell you if raceway is needed in your specific situation and ensure the installation complies with all applicable codes.5. Work Done by Licensed Professional

If you're not a qualified and licensed electrician, it's highly recommended that you hire one to perform or inspect this work. Electrical work can be dangerous, and improper installation can lead to fire hazards or other safety issues.

In summary:

SER cable is likely what you're seeing. It is approved for outdoor use. A raceway is usually not required for the entire run, but it might be needed for physical protection or to meet specific local code requirements. Always verify with the local electrical inspector. Flag for review