How To Check Heat Tape

How to Check Heat Tape: A Comprehensive Guide

Heat tape, also known as self-regulating heating tape or electric heat tape, is crucial for preventing pipes from freezing in cold climates. Regular inspection is vital to ensure its continued functionality and prevent costly repairs down the line. This guide will walk you through how to effectively check your heat tape to maintain its effectiveness and safeguard your plumbing system.

Visual Inspection: The First Line of Defense

Before turning to more technical checks, a thorough visual inspection is the first and easiest step.

Look for Obvious Signs of Damage:

• Cracks or Cuts: Carefully examine the entire length of the heat tape for any visible cracks, cuts, or abrasions in the outer sheath. Even small damage can compromise its insulation and lead to malfunction.
• Blisters or Bulges: These can indicate internal damage or overheating. Pay close attention to any areas that look unusually swollen or distorted.
• Discoloration: Significant discoloration, especially browning or blackening, suggests potential overheating or burning, which requires immediate attention.
• Loose Connections: Check the connections at both ends of the heat tape, where it plugs into the power source. Loose or damaged connections are a common cause of failure. Make sure the connectors are securely fastened and show no signs of wear.

Testing the Heat Tape Functionality

Once you've completed the visual inspection, it's time to assess whether the heat tape is actually functioning correctly.

Using a Multimeter (Recommended):

This method provides the most accurate assessment of heat tape functionality. However, if you are not comfortable using electrical testing equipment, it's best to call a qualified electrician.

• Safety First: Before handling any electrical equipment, ensure the power is turned OFF at the breaker box.
• Set the Multimeter: Set your multimeter to read resistance (usually symbolized by Ω).
• Test Continuity: Carefully place the probes of the multimeter at each end of the heat tape. A reading of 0 ohms indicates continuity and a functioning circuit. A high resistance or infinite reading means the heat tape is likely faulty. Note that the resistance reading will vary depending on the length and type of heat tape.

Feel for Heat (Less Reliable):

This method is less precise but can give a basic indication of functionality. However, it should never replace a proper multimeter test.

• Turn on the Power: After the visual inspection, turn the power back ON to the heat tape.
• Gently Feel the Tape (Do not touch directly for extended periods). Wait a reasonable time (15-30 minutes) for the heat to build up. Then, gently feel the heat tape for warmth along its length. A consistent warmth indicates a likely functional heat tape. However, lack of warmth does not definitively confirm a fault without multimeter testing.

Preventive Measures: Extending the Life of Your Heat Tape

• Proper Installation: Ensuring proper initial installation according to manufacturer's instructions is crucial for longevity. Improper installation can lead to premature failure and safety hazards.
• Regular Inspection: Regular visual checks, ideally once a year, are recommended. This allows for early detection of potential problems.
• Protect from Physical Damage: Keep the heat tape free from sharp objects, heavy impacts, and excessive bending. Protect it with suitable insulation where necessary.

When to Call a Professional

If you are unsure about any aspect of heat tape testing or find any signs of damage, it is best to contact a qualified electrician. Working with electrical systems can be hazardous, and professional expertise ensures safety and proper repair.

By diligently following these steps, you can maintain the effectiveness of your heat tape and prevent costly plumbing problems. Remember, prevention is always better than cure.