Update on GFCI Nuisance Trips on Outdoor HVAC Equipment Related to 2020 NEC
Informal testing results from Trane show GFCI outlets or disconnects severely affect variable capacity equipment (ECM / brushless rotor motors / inverter technology). Single speed and two speed equipment has proven to be less susceptible to nuisance trips. This is good news, but much more work needs to be done.
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