Metering Flashcards
what kind of meter has the capability to have all load current for the service flowing through it at rated service voltage?
self contained
what are the four types of self contained meters?
polyphase demand
single phase solid state
single phase electromechanical
polyphase electromechanical
self contained meters are limited to _____ volts and ______ amps or less.
600/400
one current coil and one potential coil working together to turn one disk are parts to a _____________ meter?
electromechanical
what kind of meter has no moving parts?
solid state
the number of watt hours per one rotation of the disk is called the?
Kh constant
a disk on an electromechanical meter does not rotate once for every ___ _____ consumed?
watt hour
a number that represents the ratio between the register gear train and the value registered on the meter dial.
Kr constant
in the absence of a rotating disk, a solid state meter uses a ___ ______ to determine watt hours
pulse recorder
poly phase also means ?
three phase
the most common service in the united states is?
three wire- 120/240 V single phase
three wire- 120/240 V single phase service takes what kind of meter?
a three wire meter
testing should be done at the meter base to ensure there is no ?
short circuit
heavy load
back feed
when removing and installing meters, always follow?
your company’s procedures
never remove a meter with more than _______ Kw of instantaneous load.
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