Okay, dealing with a high-rise fire alarm wiring deficiency is a serious matter. You're right to want to address this and bring the installation up to code. It's crucial for fire safety.Here's a breakdown of what to consider and some potential solutions, keeping in mind the need for code compliance and practicality

Understanding the Problem
The Code Requirement

Most jurisdictions require fire alarm wiring, especially in areas accessible to the public, to be protected from physical damage. This protection typically involves conduit, or sometimes armored cable, up to a certain height (often 7 feet, but verify your local code). The rationale is to prevent accidental or intentional damage that could compromise the fire alarm system's functionality.

The Challenge

The existing wiring is already installed. Retroactively installing rigid conduit is usually very difficult and expensive.

Fire Alarm Wire Type

What type of wire was installed for the Fire Alarm System? Is it FPLP, FPLR, FPL?

Potential Solutions & Considerations


Flexible Metal Conduit (FMC) or Liquidtight Flexible Metal Conduit (LFMC) Advantages



Flexibility

This is the primary advantage. FMC and LFMC can be bent and maneuvered around existing obstacles more easily than rigid conduit.

Readily Available

FMC and LFMC are commonly stocked at electrical supply houses.

Acceptable in Many Jurisdictions

It is a UL-listed raceway.

Liquidtight option

LFMC protects against moisture.

Disadvantages



Cutting and Securing

You will need to cut the conduit to the correct length and properly secure it to the wall at intervals.

Connectors

Requires appropriate FMC/LFMC connectors at both the top and bottom (and any intermediate support points).

Pulling

Getting the existing wires into the conduit is the tricky part. You might need to use pulling lubricant (wire lube) and work carefully. Consider using a "fish tape" or wire snake to help guide the wires into the conduit.

Important Notes



Code Compliance

Make sure the FMC/LFMC and connectors are UL-listed and suitable for the environment (dry, damp, wet).

Support

Properly support the FMC/LFMC at intervals specified by the code.2.

Flexible Nonmetallic Conduit (ENT) or Liquidtight Flexible Nonmetallic Conduit (LFNC)



Advantages

Lightweight Easy to cut and install Non-conductive

Disadvantages

Not as physically robust as metal conduit. May not be accepted in all jurisdictions for this application (check your local codes). More susceptible to damage than metallic options.

Fire Rating

Ensure the ENT/LFNC has the appropriate fire rating for use with fire alarm systems if required by your local code.

Important Notes



Code Compliance

Ensure the ENT/LFNC and connectors are UL-listed and suitable for the environment.

Support

Properly support the ENT/LFNC at intervals specified by the code.3.

Wire Loom/Split Loom/Corrugated Tubing (Less Recommended) Advantages

Easy to install around existing wires (since it's split). Inexpensive.

Disadvantages



Generally Not Code-Compliant for This Purpose

Wire loom is typically not considered adequate protection for fire alarm wiring in accessible areas. It's more for bundling and protecting wires within an enclosure or piece of equipment, not as a substitute for conduit in a public space.

Limited Physical Protection

Offers minimal resistance to impact or abrasion.

Aesthetics

It doesn't look very professional in a finished space.

Important Notes

Only consider this if you get explicit permission from the AHJ and it's combined with other measures to provide adequate physical protection. This is highly unlikely.4.

Surface Mount Raceway



Advantages

Aesthetically Pleasing: Can come in various colors to match the wall. Easy Installation: Can be screwed or glued to a surface.

Disadvantages

Not as physically robust as conduit.

Important Notes



Code Compliance

Ensure the raceway is UL-listed and suitable for the environment.

Support

Properly support the raceway at intervals specified by the code.

Steps to Take


Consult with the Authority Having Jurisdiction (AHJ)

This is the most important step. Contact your local building inspector, fire marshal, or electrical inspector. Explain the situation and ask what solutions they will accept. They may have specific requirements or preferences. Get their approval in writing if possible.2.

Inspect the Existing Wiring

Carefully examine the fire alarm wiring. Look for any existing damage (nicks, cuts, abrasions). If you find damage, you may need to replace sections of the wire before adding protection.3.

Plan the Installation

Measure the length of conduit needed for each run. Determine the best method for securing the conduit to the wall. Consider the aesthetics and impact on the building's appearance.4.

Gather Materials

Purchase the appropriate conduit (FMC, LFMC, or ENT), connectors, fasteners, wire lube, and any necessary tools.5.

Install the Conduit

Cut the conduit to the correct length. Attach connectors to the conduit ends. Carefully feed the existing wires into the conduit, using wire lube if necessary. A fish tape can be very helpful. Secure the conduit to the wall at the required intervals.6.

Test the System

After installing the conduit, thoroughly test the fire alarm system to ensure it is functioning correctly.

Important Considerations



Fire Alarm System Integrity

Never compromise the integrity of the fire alarm system. If you're unsure about any aspect of the installation, consult with a qualified fire alarm technician.

Documentation

Keep detailed records of the work performed, including the type of conduit used, the location of the runs, and the results of the system testing.

Safety

Always follow proper safety procedures when working with electrical wiring. De-energize the circuit before working on the wiring.

In summary: FMC or LFMC are likely your best bet, but always get approval from the AHJ before starting any work. Good luck! Flag for review