Dusty R wrote:
Last I knew the National Electric Code states that from the meter to the main panel the Voltage Drop shall not be more than 3%. And from the panel to the furthest outlet the VD shall not be more than 3%. And from the meter to the furthest outlet the VD shall not be more than 5%.
Interestingly, the NEC says it's a recommendation, not a requirement. That's one big reason we see such large voltage drops in CGs. You can find a discussion on the Mike Holt forum
here. In comparison, the Canadian electrical code (CEC) specifies voltage maximum allowable voltage drops, not recommendations.
Power companies have to comply with ANSI C84.1 and provide voltage within certain limits.
Explanation here. Service voltage can get down to 104.4 volts (on 120 volts nominal) and still meet regulatory requirements, and that's before considering voltage drop under the NEC.
