Roy H. here from Birmingham. We have a manufacturing client on Duke Energy Schedule TOU-GSD with a 400:1 CT setup, but bills suggest they're using 200:1 multiplier. Usage went from 180 kW average to 360 kW after meter changeout in June. Duke claims meter is accurate and refuses testing without $2,800 deposit. Anyone dealt with similar CT ratio disputes with Duke?
CT Ratio Error - Duke Energy Won't Test Meter
Randy here. This is classic CT multiplier error. Document everything - get photos of the CT nameplate ratings, meter display, and any paperwork from the changeout. File a formal complaint with Alabama PSC if Duke won't cooperate on testing. In my experience, utilities often reverse their position once regulatory pressure applies. What's the actual CT nameplate showing?
Thanks Randy. CTs are clearly marked 400:1 but the meter display multiplier shows 2.0 instead of 4.0. Took photos of everything. The June work order just says "meter replacement" with no CT details. Will file PSC complaint tomorrow.
Gerald N. in Virginia. Had identical issue with Dominion Energy where multiplier was half what it should be after AMI upgrade. They eventually tested and found programming error. Keep pushing - the $2,800 deposit often gets waived when they find their mistake.
Priya N. Chicago here. Quick question - how do you calculate what the multiplier should be? Still learning the CT ratio basics.
Priya - CT ratio divided by meter base rating equals multiplier. So 400:1 CT with 5A meter base = 400/5 = 80 multiplier. If meter shows 2.0, that's for 200:1 ratio. Roy's situation is textbook wrong programming after changeout.
Eugene W. from Columbus. Roy, also check if they applied the wrong tariff schedule. Sometimes CT errors get compounded by rate schedule changes during meter work. What's your current demand charges running?
Eugene - demand charges doubled from $1,400 to $2,800 monthly. Still same Schedule TOU-GSD. Filed PSC complaint Friday, got acknowledgment today. Will update when Duke responds.
Sylvia D. in Harrisburg. Roy keep us posted. These CT multiplier cases are important for all of us to track. The doubled demand charges alone should be red flag for Duke.
Update: Duke called today and scheduled meter test for next week at no charge. PSC complaint definitely got their attention. Will report results here.
Final update: Meter test confirmed multiplier was programmed at 2.0 instead of 4.0. Duke acknowledged error and will credit 4 months of overbilling - about $8,200. Thanks everyone for the guidance, especially Randy on the PSC complaint approach.