Jeff and his team were amazing! I needed a load calculation, one line diagram, and a panel schedule for an electrical permit with the city. Phoenix Contracting Services had an unbeatable price and moved quickly to See more
LOAD STUDIES · INFRARED THERMOGRAPHY · ELECTRICAL INSPECTIONS
We record power factor, voltage and harmonics over time and report whether the system is steady, efficient and within range.
Power factor compares the power doing useful work with the total power the system has to supply. A value of 1.0 means all of it is working. Lower numbers mean the conductors, transformers and the service are carrying current that does no work, and that current takes up capacity you may be paying for.
Motors, transformers that run lightly loaded and some electronic loads pull the number down. Some commercial rate plans add a charge when power factor falls below a set level, so it is worth knowing where your building stands.
It is how steadily the voltage at your equipment stays near its rated value. ANSI C84.1 sets the normal service voltage range at plus or minus 5 percent of nominal. Outside that range, motors run hot, electronics reset and lights flicker. Heavy summer loads on a long run of conductor can pull voltage down at the far end of a building.
If power factor is low, the report says where it is low and what could raise it, such as capacitor correction sized to the measured load. Capacitors can interact badly with harmonics, which is why we measure harmonics before recommending one. If voltage is out of range, the report points to the location and the likely cause, such as an undersized feeder, a poor connection or heavy load on a shared transformer.
This is a baseline assessment of the whole system, useful before you add equipment or when an owner wants to know the condition of the power. If a particular machine keeps failing or breakers keep tripping, power monitoring is built for that. The overall service is described on our Electrical Load Studies page.
Arizona ROC #153656 (CR-11) | Over 40 years in business
OUR PROCESS
Every job follows three steps: a site walkthrough, testing and documentation, then findings and next steps.
We start with a free phone consultation, and you can send a photo of your panel or equipment. If on-site work is needed, we visit, look at the panels and service, and agree on what needs to be tested or repaired before any work starts. On-site work is quoted before it begins.
Load loggers and a thermal camera record what the equipment is doing, and the results are documented for each panel or component we check.
We go over what we found and your options in plain language. If corrective work is needed, we are licensed to do it.
Share the details of your project, and our team will help you identify the most practical next step.