Meter Tech Test

What are the 5 signs of awareness

Look ahead

Size up whole Scene

Signal Intentions Early

Plan an escape Route

Take decisive actions

What is the circle of safety

Making a loop around a truck to make sure nothing has been done to it

Direct Currents

Flows in 1 direction, constant voltage polarity

Alternating Circuit

Changes direction at regular reoccurring intervals along with voltage polarity

Cycle

The time of which it starts and ends

Frequency

Number of times a sine wave repeats

Hertz

Cycle/second

What is the hertz of a standard line in the US

60 hz

What are the 3 main factors of an electrical circuit

Current, voltage, resistance

What is the range of amps where the heart fibrillates

.025-.1

What is the possibly fatal amps for a person

.5 amps

Voltage

Pressure from electrical circuits power source that pushes charged electrons through

Ohms law

Describes relationship between current voltage and resistance

Touch potential

Physical contact with ground and energized objects

Step

Stepping between different rings of voltage

How back do you stay from downed lines

35 feet/10 yards

How do you avoid touch potential

Jumping away from an energized object

How do you avoid step potentials

Shuffle away

What do you always assume

Assume all downed lines are energized

How does the ripple effect affect powerlines

Downed lines have rings around them with gradually less voltage, stepping between rings = making up voltage between two rings

Do trees/wood conduct energy

Yes

What do you wear when outside of the vehicle

Hard hat and safety glasses

When do you wear full ppe

When the electrical box is open

What conditions do we operate under

NFPA 70E and Hazard Category 1

What Hazard Category do we work under

Hazard Category 2

How do you measure meters

In watthours

What is the unit of measurement for electrical energy

Kilowatt hour

What is the top side

Line (utility side)

What is the bottom side

Load (customer) side

Do you assume all terminals as energized

Yes

What's the order of meter id checj

Form, class, volts, wire

What category are network meters

12s

What side do you disconnect first

Line (1 & 2)

Overhead lines

Lines coming from poles down to the box

Underhead

Lines come from below

True or False underhead power lines are more likely to have live wires

True

How do you take out a barrel lock

Clean barrel, fully insert key, pull barrel out

What's the order of an overhead line

Service line,weather head, riser, meter can, meter

Is anything is damaged, or if you have any concerns:

Don't pull, call your supervisor

True or false a meter can doesn't have to be attached to a home

False

How can you get lines out of mobile homes

Put pressure on top

Arc Flash

A type of electrical explosion that results from low impedance connection through the air to the ground

How do you get an arc flash

Equipment failure, improper use of tools

How do you get electrocuted

Contact to an energized circuit

What are some signs of a bad circuit

Damage to meter socket, smoke/fire damage, discoloration of base by blades, glass/plastic cover broken, oil droplets in meter, metal blades/jaw damaged

Backfeed

Stealing power or using a generator

How do you recognize backfeed

Load side is higher than 0

How should you stand when removing a meter

To the side, both feet on the ground

What could a broken government seal indicate

Stolen energy

1s meter

120 volts 2-wire

2s

240 volt, 3 wires

12s meter

240 volts, with a fifth jaw as grounding

What is the voltage between L1 and G on a 12s circuit

120

What is a voltage from L2 to ground on a 1s

0

What direction should the arrows on the ring face when replacing a meter

Front, toward you

What should you do if there are more than 3 wires?

Do not exchange

How are hot sockets crsated

Broken components

What can indicate a hot socket

Discoloration of jaws, melting to base, loose blade, corroded/melted insulation

What happens if you get theft of service

Report, and then most likely continue exchange

How often are vehicle inspections done

Monthly/weekly

What is energy consuned

Quantity if power used over time

What happens every time you use a baton or spray

Report to a supervisor

After removing a meter, what do you do first

Check voltage

How do you stop having voltage

Put boots on top of the jaws