You're right, just throwing any old cover on there is a safety hazard. Here's a breakdown of how to approach this, focusing on identification and safe replacement

1. Identifying the Panel:
Look for any Markings on the Inside of the Box

Even without the cover, the inside of the panel box itself often has manufacturer names, model numbers, or catalog numbers stamped or printed on it. This is your primary target. Use a flashlight and look closely.

Examine the Breakers

Often the breakers themselves will be a clue to the panel manufacturer. If the breakers are GE, Siemens, Square D, etc., that's a good starting point.

Photograph the Panel

Take detailed pictures of the entire panel inside and out. Include close-ups of any markings, breakers, bus bars, etc. These photos will be invaluable when contacting suppliers or electricians.

Consider the Age of the House

Knowing the age of the house will help narrow down the possible manufacturers from that era.

2. Once you (hopefully) have a manufacturer



Contact Electrical Supply Houses

This is your best bet. Call local electrical supply houses (the ones that cater to electricians, not big box stores). Show them the photos and any markings you found. They often have access to old catalogs, cross-reference information, and can help you identify the panel. Some electrical supply houses also have "bone yards" or connections to contractors who might have spare parts from panel upgrades.

Contact the Manufacturer Directly (If Known)

If you can identify the manufacturer, contact their customer support. They may be able to help identify the panel based on its features and date of manufacture. They may even have replacement covers available (although older models can be difficult).

Online Electrical Forums

Post your photos and any information you have on online electrical forums frequented by electricians. They can often help with identification.

3. What to do if you CAN'T Identify the Exact Panel



Consult a Licensed Electrician

This is crucial. A qualified electrician can assess the panel, determine its type and capacity, and advise on the best course of action. They may have experience with similar panels and know where to source a compatible cover. They are also equipped to ensure safety.

Universal Panel Covers (Proceed with Caution)

Some manufacturers make "universal" panel covers designed to fit a range of panel sizes. These are not ideal but can be a solution if you absolutely can't find the correct cover.

Important

A licensed electrician must install a universal cover and ensure it fits properly and provides adequate protection. It needs to completely cover all live parts and have the correct knockouts for the breakers. A poorly fitting cover is just as dangerous as no cover.

Consider Panel Replacement (Often the Safest Option)

If finding a cover proves impossible or very costly, and especially if the panel is old or showing signs of wear, replacing the entire panel might be the best long-term solution. This is the most expensive option, but it ensures safety and provides a modern, reliable electrical system.

4. Why Plexiglass is a Terrible Idea



Not Flame Retardant

Plexiglass will melt and burn readily in a fire. A proper panel cover is made of steel and is designed to contain sparks and flames.

No Grounding

A metal panel cover is grounded to the electrical system. This is crucial for safety. Plexiglass provides no grounding.

Not Durable

Plexiglass is easily cracked or broken, exposing live electrical components.

Not Listed/Approved

The Plexiglass is not listed/approved for use as an electrical panel cover. Using it would violate code.

Important Safety Considerations



Electricity is Dangerous

Never work on an electrical panel yourself unless you are a qualified electrician.

Turn Off the Power

If you are going to do any inspection or cleaning around the panel, turn off the main breaker to cut power to the entire panel.*

Grounding

Ensure that any replacement cover is properly grounded.

In summary: Focus on identifying the panel first. If you can't, get a qualified electrician to assess the situation and recommend the safest course of action. Replacing the panel might be the most reliable (and potentially safest) option, especially if it's an older model. Plexiglass is absolutely not a safe or code-compliant solution. Flag for review