Intro to Air-Conditioning and Refrigerating:

Electrical Inspection Checklist: Air-Conditioning and Refrigerating

This Electrical Inspection Checklist: Air-Conditioning and Refrigerating is engineered to provide an NEC compliant process to guide you in your safety inspections.

Air-conditioning and refrigerating equipment is commonplace within both residential and commercial spaces and requires regular inspection. This process is geared to follow the guidelines laid out in an actionable way

This process is editable and you can add or remove steps as you please. Each inspection-specific task contains the relevant NEC section reference which applies to the action. It is recommended that you familiarize yourself with the standards before beginning any inspection

Throughout the checklist, you will find form fields where you can record relevant information. This data will be stored in the template overview which you can view on the left-hand tab for the template. You can export this data for review to provide an overview into your inspections. 

If you utilize the form fields well, you can select to print your checklist which will give you the option to save it as a PDF. This can, therefore, act as a report generator which you can save and then send to the relevant stakeholders once your inspection is completed.

Watch this video below for an introduction to dealing with electrical elements of air-conditioning units.

AC power cords explained, testing, installation, safety | tips & methods -1929fordhotrod

Record inspection details

Use this section to record the key details of the inspection.

Enter your information into the form fields provided. 

Run general inspection safety checklist

An electrical inspection is normally needed to ensure the safety of others. However, it is important to make sure that your own safety is not put at risk in performing the inspection. 

You can find here our checklist for making sure you are safe before performing your inspection

Electrical Inspection Checklist

The first half of this checklist is designed to help you assess the area and risk in order to do your job safely and well. 

We recommend you run this checklist before starting any inspection.

Identify equipment for inspection

NEC: 440.1, 440.2 

Article 440 defines what equipment falls within the scope of the guidelines.

Specifically, this process is geared to deal with equipment containing Hermetic Refrigerant Motor-Compressors.

Use the form field below to record any notes.  

Record the applicable nameplate information

NEC: 440.4 

Most equipment nameplates will have some common items of information. Many of these are self-explanatory, and include:

  • Manufacturer
  • Manufacturerʼs address
  • Model number
  • Serial number
  • Certification marks

The nameplate should also give further technical information specific to the electric motor which we can use within the inspection process.

Make sure the branch-circuit conductor size is appropriate

NEC: 440.31 through 440.35 

You can determine the suitability of the branch-circuit conductor size based on the information we gained from examining the nameplate. 

Verify the conductor sizes for those supplying multiple units

NEC: 430.24, 430.25

If a conductor is supplying multiple units then it requires a greater size than one which is only servicing a single unit. Assess the relationship between the conductor and the units it serves to ensure standards are being adhered to. 

Check the branch-circuit overload protection

NEC: 440.51 through 440.55 

Firstly, you have to check that the branch-circuit overload protection is present and then assess its suitability for the job it is required to do.

Check the branch-circuit short-circuit and ground-fault protection

NEC: 440.21, 440.22

Check that the three are all present and that they are appropriate for the size of their task. 

Check the feeder short-circuit and ground-fault protection

NEC: 430.61 through 430.63

Verify that feeder short-circuit and ground-fault protection is both provided and properly sized where applicable.

Use the form field below to record notes.

Make sure the controllers have adequate ratings

NEC: 440.4(B), 440.41 

Make sure that controllers have the ratings appropriate to the task they are performing. In cases where the controllers are not part of a larger multimotor or combination load equipment, you need to also check the short circuit current ratings. 

Leave any notes in the form field provided

Make sure the disconnecting means have adequate ratings

NEC: 440.12, 440.13 

Check the ratings of the disconnecting means. 

Verify the disconnecting means are in sight and accessible

NEC: 110.26, 440.14

As part of a broader observation on the suitability of the working spaces, make sure that the disconnecting means are both in sight and accessible. Check they are not blocked by obstacles or hidden behind the equipment itself. 

Verify LCDI devices or AFCI protection are provided for cords

NEC: 440.60 through 440.65 

Verify that:

  • conductors,
  • receptacles,
  • cords,
  • and overcurrent devices

...for room air conditioners are properly sized and that LCDI devices or AFCI protection is provided for cords.

Check for adequate lighting in the area

NEC: 210.8, 210.63, 210.70 

If you can't see the equipment well enough then this could cause future maintenance issues. Make sure that adequate lighting is in place where the equipment is located. 

Write down overall notes regarding inspection

If you have any other thoughts or comments which you would like to include in your report, leave them in the form field provided. 

Send report via email to key stakeholders

You can use the email widget to send a copy of your report to the key stakeholders. 

The information from your first task is being pulled into the body of the email through the use of variables. You can find more about variables on our help site


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