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Electric Power & Utilities/Multipliers on Residential Electric Meters


cai wrote at 2011-04-13 15:52:17
does the multiplier have a formula??????????how can you get that multiplier it it is not specified on the meter???

Tech 1 wrote at 2013-07-19 13:26:57
On a normal residentila house the multiplier is X1. When dealing with three phase services the utility will use CT's to allow the meter to not move fast and rollover quite often. In that case there is a multiplier.The CT's are normally  rated at something to 5. I.E 100:5,200:5 hence these will have a multiplier of 20 and 40 respectively.If you are just a single family dwelling I don't think you have CT's.

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Ron Robertson


I can answer questions regarding: Code, services, feeders, branch circuits, transformers,overcurrent protection, basic motors and motor conrol, load and voltage drop calculations, troubleshooting. I will not answer questions on advanced motor control, logic controllers, and questions which are typically engineering functions: short circuit current calcs, power factor correction, etc.


Licensed electrician since 1968. Owner-Robertson Electric Company, residential/commercial contractor. Certified by International Association of Electrical Inspectors for residential and general code enforcement inspection, and plans review for compliance. Owner, FPN,Inc., providing electrical inspection for compliance for small municipalities; former Chiel Electrical Inspector, Village of Libertyville, IL; former licensed commercial electrical inspector, State of Wisconsin; Instructor for 3rd and 4th year apprentices, Associated Builders and Contractors, Northern Illinois Chapter.

4 years H.S., 2 years college, IAEI certified inspector; certified instructor, National Center for Construction Education and Research.

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