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33 Cards in this Set
- Front
- Back
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What are Class 0 gloves voltage limit? |
1000 Volts
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What is third step in meter on?
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Ground jumper test
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What are the 3 potentials of a wire?
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Voltage, Ground, 0
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What are the reasons for a 120 volt load test to fail? |
1. Capacitance 2. 120 load ready to come on (breaker on) 3. 120 load in front of the main breaker 4. Phase to ground short |
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What are the reasons for a 240 volt load test to fail? |
1. 240 volt load ready to come on 2. Phase to Phase short 3. 240 volt load wired ahead of main breaker |
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What are the 4 steps for Meter On testing? |
* Test your tester 1. Backfeed 2. 120 volt load 3. Ground Jumper 4. 240 volt load |
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What do barriers seperate? |
A Phase to Phase or A Phase and Ground |
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What is a circuit with no resistance to current flow? |
A Dead Short |
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What is OHM's Law? |
I=E/R
I=Current E=Voltage R=Resistance |
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What is the minimum volts for a read on an Elwood Tester? |
80-90 volts is minimum needed to register |
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When must a rep. wear a face shield? |
When connecting or disconnecting 1. All 4 wire services 2. All services greater than 250 volts 3. All URD services (underground) |
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When must a rep wear a 20 Kal jumpsuit? |
When voltage is above 250 volts |
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On 120v nominal voltage services, readings below 110v or above 130v require what? |
Immediate Disconnection of the customer's service |
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What is a Green fusetron fuse rated for? |
30 amps |
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A GFI or AFCI breakers are the only breakers that would have a __________ going to them? 1. bare copper wire 2. Green bonding wire 3. Circuit neutral wire 4. Auto reset |
3. A Circuit neutral wire |
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What would the following voltage readings indicate? With a normal load on 120/75/195 |
Poor connection on low side |
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Your elwood tester will light across a bad cartridge fuse only if? |
There is a completed circuit |
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When programming a sentinal meter what program is used for a TOU meter? 1. 093-demand 2. 193-demand 3. 10-TOU |
10-TOU |
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You find backfeed while turning on an electric meter. If you cannot eliminate the backfeed what do you do? |
Remove meter Glass off channel Notify dispatch Contact CSS |
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What are the 120 volt nominal voltage limits? |
114/123 |
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With a normal load on, What would the following voltage readings indicate? 100/140/240 |
A poor neutral connection |
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A conductor at ground potential would be? |
The Neutral |
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What is the purpose of the bare copper wire in a circuit? |
To protect against a shock |
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A reading of 240v at the top of two cartridge fuses and a reading of zero on the bottom of the same fuses indicates? |
A Blown Fuse |
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What would the following readings require you to do?
135/137/272 |
Shut customer OFF
Call Line Check neighbors |
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On a meter set test you get a light on test 5. What are two possible causes? |
A Phase to Phase short A 240 volt load ready to come on A 240 volt load wired ahead of main breaker |
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Name 3 causes for a light on your elwood tester during step 2 of an on test. |
Phase to ground short 120 load 120 load ahead of main breaker Capacitance |
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How many wires does a HQ5 have? |
3 wires |
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How many wires does a HQ7 have? |
4 wires |
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What is backfeed? |
Voltage from another source |
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What size breaker should be attached to #10 wires? |
30 amp |
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To help a customer find a short you could install a light bulb in the fuse holder. When the short is cleared what happens to the bulb? |
It goes out or dims |
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What is the most common backfeed in apartments? |
Running an extension cord from one apartment to another with 2 male ends plugged into outlets. |
