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Electrical Testing Services:

Acceptance Testing / Commissioning

Maintenance Testing

Thermographic & Infrared Scanning

30-Day Load Monitoring

Professional and Engineering Services:

Arc Flash Hazard Analysis

Coordination Studies

Short Circuit / Fault studies

Harmonic Analysis and Remediation

Shop Services and Parts:

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Switchgear

Bussing, Siesmic Braids

Tap Changer Parts

Insulators and Insulating Parts

Contact Remanufacturing

Circuit Breaker Overhauls

Technology Upgrades

Technical and Safety Training Courses:

Electrical Low & High Voltage Safety training

Maintenance Training

Arc Flash Hazards

Thermographic Training

30-Day Load Monitoring / Load Survey

Overloading a panel or circuit is dangerous. The most effective means of knowing how much extra load can be installed is monitoring the power demand. The monitoring period should be sufficient to accurately describe the system. Advanced Electrical Testing, Inc. recommends a period of 14 to 30 days. In fact, the National Electric Code (NEC). Article 220.35(1) "Optional Calculations for Determining Existing Loads" states:

"The calculation of a feeder or service load for existing installations shall be permitted to use actual maximum demand to determine the existing load under the following conditions:

(1) The maximum demand data is available for a 1-year period. Exception: If the maximum demand data for a 1-year period is not available, the calculated load shall be permitted to be based on the maximum demand (measure of average power demand over a 15-minute period) continuously recorded over a minimum 30-day period using a recording ammeter or power meter connected to the highest loaded phase of the feeder or service, based on the initial loading at the start of the recording. The recording shall reflect the maximum demand of the feeder or service by being taken when the building or space is occupied and shall include by measurement or calculation the larger of the heating or cooling equipment load, and other loads that may be periodic in nature due to seasonal or similar conditions."