How To Check Vacuum In Circuit Breakers

A circuit breaker is one of the most important components of a home's electrical system. Without it, an overload of electricity can cause serious damage to the system. For this reason, regular inspection of your circuit breaker is essential. One of the key parts of this inspection is checking the vacuum in the circuit breaker.

The vacuum in your breaker is the negative pressure inside the breaker’s containment case that keeps the contacts from arcing. When the vacuum weakens, it allows for arcing which leads to dangerous electrical surges. So it’s important to check the vacuum in the circuit breaker regularly to ensure it is working properly.

The first step to checking the vacuum in the circuit breaker is to open the containment case. This will give you access to the Vacuum Indicator Light, or “VIL”. This is the device used to measure the pressure inside the breaker. You should read the pressure using the VIL and make sure it is within the recommended range as indicated in your circuit breaker manual.

Once you have measured the pressure inside the breaker, you can then make any necessary adjustments. If the pressure is too low, you should check for any leaks in the system. If there are any, you may need to replace the entire circuit breaker. If the pressure is too high, you can adjust the sensitivity of the VIL to ensure accurate readings.

Finally, it is important to remember to turn off all power to the circuit breaker before checking the vacuum in the breaker. This is a safety precaution to prevent any shocks while making adjustments.

In short, checking the vacuum in circuit breakers is an important part of a regular electrical system inspection. By measuring the pressure inside the breaker and making necessary adjustments, you can ensure your circuit breaker is functioning optimally. Always remember to turn off all power before checking the vacuum in the breaker!

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