jdevlin, As previously stated, we perform our work at the client's convenience, which is typically after hours/weekends, at which time the environment is controlled, ie, no employees turning lights/motors/etc on or off. It's up to the client to set that time when the elec flow will be as constant as possible when amp and volt readings are taken. All work is supervised by the client's project manager, who has to sign off on any readings taken, before or after.
