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Ground Fault Circuit Interruptor (GFCI)Updated a year ago

Understanding Mysa In-Floor's GFCI Type

  • Type of GFCI
  • Mysa In-Floor uses a 5 mA Class A Ground Fault Circuit Interrupter (GFCI), essential for safety.

  • Role of GFCI
  •  This device protects your floor heating system from power surges and other electrical issues. In North America, GFCI's are commonly installed in homes as a safety standard. Class A GFCI's can shut off power with only 5 mA of leakage, providing efficient fault detection.

Built-in GFCI in Mysa In-Floor

  • GFCI Inclusion
  • Mysa In-Floor incorporates a Class A GFCI within the thermostat, eliminating the need for a separate GFCI-protected circuit.

  • Non-Disablable Feature
  • The GFCI in Mysa cannot be disabled, ensuring continuous protection.

GFCI Specifications in Mysa In-Floor

  • GFCI Rating
  •  Mysa is equipped with a Class A 5 milliamps (mA) GFCI.

  • Compatibility
  • It's not suitable as a replacement for thermostats with a 15 mA GFCI due to differing trip levels.

Installation Considerations for Mysa

  • Circuit Panel Compatibility
  •  Installing Mysa on a circuit with an existing GFCI breaker is not recommended as it may cause false trips. Consider using a standard breaker for Mysa installations.

  • Class B GFCI Replacement

  •  Mysa cannot replace thermostats with a built-in Class B GFCI (15 mA trip level) as this would likely lead to frequent tripping of Mysa's internal GFCI, which has a lower trip level of 5 mA.

Any questions? Reach out to our all-human Customer Experience team!

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