Lindsay: The meters have always been arranged so that the voltage coil connections are made AHEAD of the current coil - this way, the small amount of energy expended by the voltage coil (and the meter's internal electronics in today's electronic meters) are NOT included in the consumer's bill - the utility actually eats that cost (which actually is pennies per year per meter anyway).
Fx Greek: The problem with internal surge protection on meters is the amount of 'fault current' available on the utility side of the meter - in some cases, it can be tens of thousands of amps. It was found that there were more failures of electronic meters WITH internal surge protection than without.
Lindsay: The meters have always been arranged so that the voltage coil connections are made AHEAD of the current coil - this way, the small amount of energy expended by the voltage coil (and the meter's internal electronics in today's electronic meters) are NOT included in the consumer's bill - the utility actually eats that cost (which actually is pennies per year per meter anyway).
Fx Greek: The problem with internal surge protection on meters is the amount of 'fault current' available on the utility side of the meter - in some cases, it can be tens of thousands of amps. It was found that there were more failures of electronic meters WITH internal surge protection than without.