i was running tests in my workshop with my fluke 435 power quality analyser and that was one of the results...from numerous tests on different lamps...i also had a 5 kva generator on test to check frequency...sinewaves...power factor...harmonics...at least i dont have to take anybodies word for anything i run the tests... all my equipment has recording facities even my installation tester which is a fluke 1653...so nobody can tell i didnt get a reading the meter can't lie...i print out my COC straight from the 1653 with the sofware i have.

i read an article about the biggest postal service in USA was looking for a company which could carry out thermal imaging and power quality analysing in all their facilities...they had to get various companies involved and they say it was a logistic nightmare.

i decided a year ago to offer an all in one service to my customers...i offer them a completed package including a thermal audit...power quality audit...COC yearly audit to make sure their facility is up to standard i repair any defects and retest as soon as the repairs are done without having to pay another company a call back fee to retest...the problem is if the fault is not resolved then the finger pointing starts...the one person says the other hasnt done his work correctly as on...this way i find a fault i determine what the actuall cause of the fault by connecting the PQA to find the cause be it overloading...bad connections in the breaker etc...i fix the fault myself retest and send the report t the customer...no finger pointing all in one done.

i also do power audits to determine if your power supply is adequate to connect addition equipment or if you require a standby generator i can give a print out of the exact power consumption of your electrical installation.
i can check if you are being billed correctly because my equipment is class A (accurate to 0.01) meaning it can be used as evidence if required...i also have calibration certificates for all my equipment...etc...etc.