Feb 28, 2021 · A hermetic refrigerant motor-compressor, or equipment containing such a compres‐ sor, having a protection system that is approved for use with the motor-compressor …

Aug 15, 2013 · Article 440 provides details for sizing branch circuit overcurrent protective devices (OCPDs), branch circuit conductors, and motor overload protection in Parts III, IV, and VI, …

Do you know which refrigeration motors have special requirements and which don't? Or what those requirements are? Article 440 applies to electrically driven air-conditioning and …

The NEC® therefore permits a rating or setting of up to 175% of the larger of the motor load or branch-circuit selection current. This can be increased to 225% if necessary. A 15-A rating is …

In the 2023 NEC®, language was added in Section 440.14 which requires the disconnecting means for HVAC equipment to meet the working space requirements of NEC® Section 110.26 …

This section outlines the regulations for electric motor-driven air-conditioning and refrigerating equipment, focusing on the necessary markings, circuit requirements, and protective …

Understand NEC Article 440 requirements for air conditioning and refrigeration equipment. Conductor sizing, protection, and disconnecting means explained.

NEC Section 440.11 provides requirements to ensure that a disconnecting means for HVAC equipment can disconnect the air-conditioning or refrigeration equipment, including motor …

Oct 16, 2009 · The new language in 440.14 is equivalent to saying "For the purposes of 110.26(A), disconnecting means shall be considered to be likely to require examination, …

These are the 10 NEC Article 440 items we deem most important, based on the pervasiveness of confusion and the potential costs of same. Article 430 also applies, because this equipment …