Electrical Safety Quiz
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Questions and Answers

What do the white stripes on an elbow indicate?

  • Current capacity
  • Insulation type
  • Voltage rating
  • Load break capable (correct)

What is the maximum size of a bayonet fuse that can be pulled without shedding any load?

  • 250 Amps
  • 200 Amps
  • 300 Amps
  • 140 Amps (correct)

What is the rating of a jumper connector?

  • 200 Amps
  • 600 Amps
  • 400 Amps (correct)
  • 800 Amps

What is the viper rating in terms of kV and amp?

<p>38kV and 800 Amps (B)</p> Signup and view all the answers

Which rating corresponds to the little mule grip?

<p>5000 lbs (C)</p> Signup and view all the answers

What is the testing voltage for rubber gloves classified as Class 2?

<p>20kV (D)</p> Signup and view all the answers

How often are rubber hoses inspected by the company?

<p>Annually (A)</p> Signup and view all the answers

What is the maximum tested voltage of rubber blankets rated at 26.5kV?

<p>30kV (A)</p> Signup and view all the answers

What are the rating and load pick up amp for a #2 jumper?

<p>192 amps, 300 amps (C)</p> Signup and view all the answers

When should rubber goods be personally inspected before use?

<p>Every day before use and again if suspected damage occurs (C)</p> Signup and view all the answers

What should the ohmmeter reading show when testing H1 to tank ground for a single bushing transformer?

<p>Slow rise (B)</p> Signup and view all the answers

When ohming out a double bushing transformer, what is the expected reading between H1 and H2?

<p>Slow rise (B)</p> Signup and view all the answers

Which personal protective equipment (PPE) is NOT required when ohming out a pot?

<p>Hearing protection (D)</p> Signup and view all the answers

What voltage reading would you expect when testing 2 to N in the voltmeter readings?

<p>0 V (B)</p> Signup and view all the answers

What happens to the voltage between secondaries when testing a UG transformer?

<p>Shows a fast rise (A)</p> Signup and view all the answers

Flashcards

What do white stripes on an elbow indicate?

Indicates the elbow is designed to interrupt current flow under load conditions.

What do bayonet fuses do?

They are designed to isolate the secondary side of a transformer from the primary side and protect the transformer from faults on the secondary side.

What is the X100 block rating?

It can handle up to 2500 pounds of weight.

What is the little mule grip rating?

It can withstand up to 5000 pounds of force.

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What is the 795 grip rating?

It can handle up to 5500 pounds of force.

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Rubber hose ratings

Rubber hoses are rated to handle 26.5 kV of voltage and are tested at 30 kV to ensure reliability.

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Rubber glove ratings

Class 2 gloves are rated at 17 kV and tested at 20 kV, while Class 0 gloves have a lower rating of 1 kV and are tested at 5 kV.

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Jumper ratings

A #2 jumper is rated at 192 amps, a 4/0 jumper is rated at 400 amps, and the load pick-up head has a rating of 300 amps but operates at 192 amps because it uses a #2 jumper.

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Daily rubber glove inspection

Rubber gloves are inspected daily before use by the individual, and then again if any damage is suspected, ensuring safety throughout the day.

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Rubber hose/blanket inspection

Rubber hoses and blankets are inspected annually by the company and daily by individuals before use, ensuring ongoing safe operation.

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Ohming Out a Transformer

A test where you use an ohmmeter to check the resistance between different components of a transformer.

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Ohming Out Single Bushing Transformer

When ohming out a single bushing transformer, the resistance between the high voltage terminal (H1) and the tank ground should show a slow rise, indicating a good connection. The reading between H1 and the secondary windings should be infinite, meaning there is no connection. The reading between the secondary windings themselves should show a fast rise, indicating a good connection.

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Ohming Out Double Bushing Transformer

When ohming out a double bushing transformer, the resistance between the two high voltage terminals (H1 and H2) should show a slow rise. The readings between either H1 or H2 and the tank ground, or between H1 and H2 and the secondary windings, should be infinite. The reading between the secondary windings themselves should show a fast rise.

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Ohming Out a UG Transformer

When ohming out a single phase underground (UG) transformer, the resistance between the primary terminals (H1A and H1B) and the tank ground should show a slow rise. The readings between either H1A or H1B and the secondary windings should be infinite. The reading between the secondary windings themselves should show a fast rise.

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PPE for Ohming Out a Pot

A set of safety gear used to protect electricians while performing work, including hard hat, flame-resistant clothing, rubber gloves, safety glasses, and electrical hazard-rated boots.

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Study Notes

Apprentice Questions 0-600V

  • Do you take shortcuts?

  • Don't lie. We already know.

  • When do you know you are working safely?

  • Following work methods and safety manual to the best of your knowledge. Stay in your books work methods and safety manual to the best of your knowledge. Stay in your books.

  • What are the hoists ratings?

  • Red and green 1500lbs singled 3000lbs doubled. Blue 2000lbs singled 4000lbs doubled.

  • What are rubber hoses rated/tested at?

  • Rated at 26.5kv, tested at 30kv.

  • What are rubber gloves rated/tested at?

  • Class 2 gloves rated at 17kv, tested at 20kv. Class 0 gloves rated at 1kv, tested at 5kv.

  • What are rubber blankets rated/tested at?

  • Black blanket rated at 17kv, tested at 20kv. Small orange blanket rated at 26.5 kv, tested at 30kv. Split blanket rated at 36kv, tested at 40kv.

  • When are rubber goods inspected? Company inspection and personal inspection?

  • When tested by the company every 4 months, and personally every day before use and only again that day if you suspect damage. Rubber hoses and blankets are tested annually by the company, and personally every day before use and only again that day if you suspect damage.

  • How do you inspect rubber goods?

  • Test gloves with a bellow, roll blankets from each side, roll hoses inside out. Inspect dates and for any cuts, chemical marks, or sun damage.

  • When are sticks inspected? Company inspection and personal inspection?

  • Sticks are tested every 2 years by the company, and personally every day before use and only again that day if you suspect damage. Check dates.

  • What are jumper ratings? #2, 4/0, load pick up?

  • #2 rated at 192 amps, 4/0 rated at 400 amps, load pick up head rated 300 amp but 192 amp because its a #2 jumper.

  • What are your meter can checks?

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Description

Test your knowledge on electrical safety protocols, including the ratings and inspections of personal protective equipment, as well as critical voltage testing procedures. This quiz covers various aspects of electrical equipment and safety measures. Ensure you understand the guidelines to maintain safety in an electrical environment.

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