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TRAINING BULLETINS > TB # 8 ELECTRICAL HAZARDS > Flashcards

TB # 8 ELECTRICAL HAZARDS Flashcards

1
Q

A COMPARISON OF ELECTRICITY AND THE EQUIVALENT IN FIREGROUND HYDRAULIC TERMS:
AMPERES = ________

A

GALLONS PER MINUTE

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2
Q

A COMPARISON OF ELECTRICITY AND THE EQUIVALENT IN FIREGROUND HYDRAULIC TERMS:
VOLTS = _______

A

POUNDS PER SQUARE INCH (PSI)

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3
Q

A COMPARISON OF ELECTRICITY AND THE EQUIVALENT IN FIREGROUND HYDRAULIC TERMS:
OHMS = ______

A

FRICTION LOSS

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4
Q

A COMPARISON OF ELECTRICITY AND THE EQUIVALENT IN FIREGROUND HYDRAULIC TERMS:
CURRENT = _______

A

WATER

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5
Q

A COMPARISON OF ELECTRICITY AND THE EQUIVALENT IN FIREGROUND HYDRAULIC TERMS:
CONDUCTOR = _______

A

HOSE

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6
Q

LOW VOLTAGE

A

USUALLY BELOW 600 VOLTS

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7
Q

HIGH VOLTAGE

A

600 VOLTS UP TO 59,999 VOLTS

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8
Q

EXTREMELY HIGH VOLTAGE

A

EXCESS OF 60,000 VOLTS

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9
Q

GETTING ELECTRICITY TO THE CONSUMER CAN BE BROKEN DOWN INTO 3 SYSTEMS:

A

GENERATION, TRANSMISSION & DISTRIBUTION

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10
Q

LADWP SYSTEM IS COMPRISED OF OVER __,____ TRANSFORMERS, OVER ___,____ POLES AND ____’S OF SUBSTRUCTURES AND SWITCHES INSTALLED OVER THE LAST __ YEARS.

A

-50,000 TRANSFORMERS
-250,000 POLES
-1000’S OF SUBSTRUCTURES AND SWITCHES
-70 YEARS

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11
Q

GENERATION FACILITIES GENERATE ELECTRICITY BETWEEN _____ & _____ VOLTS

A

4,000 & 20,000 VOLTS

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12
Q

TRANSMISSION LINES RANGE FROM ___KV TO OVER ____KV

A

69KV TO OVER 1000KV

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13
Q

MOST OF THE TRANSMISSION LINES COMING INTO LOS ANGELES ARE ___KV

A

230KV

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14
Q

ALL VOLTAGES ABOVE __KV ARE REFERRED TO AS TRANSMISSION VOLTAGES

A

69KV

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15
Q

STRINGS OF INSULATORS ON TRANSMISSION TOWERS CAN RANGE FROM __ FEET TO __ FEET LONG DEPENDING ON THE VOLTAGE

A

3FT - 20 FT

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16
Q

THE LADWP HAS A NUMBER OF TRANSMISSON LINES WITH VOLTAGES OF ___KV OR ___KV

A

138KV OR 230KV

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17
Q

LADWP HAS __ RECEIVING STATIONS

A

21

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18
Q

LADWP RECEIVING STATION RECEIVES THE ELECTRICITY AT TRANSMISSION VOLTAGES AND STEP THE VOLTAGE DOWN TO ____KV

A

34.5KV

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19
Q

LADWP HAS OVER ___ DISTRIBUTION STATIONS

A

150

20
Q

DISTRIBUTION STATIONS STEP DOWN ELECTRICITY TO ___KV

A

4.8KV

21
Q

4.8KV IS KNOWN AS A PRIMARY CIRCUIT VOLTAGE. EACH PRIMARY HAS AN AVERAGE OF ___ CONSUMERS

A

750

22
Q

LADWP HAS OVER ____ PRIMARY CIRCUITS

A

1500

23
Q

OVERHEAD TRANSFORMERS ARE INSTALLED ON THE 4.8KV CIRCUITS TO STEP THE VOLTAGE DOWN TO _____

A

120/240 VOLTS

24
Q

CONDUCTORS ARE MATERIALS THAT…

A

ALLOW AN ELECTRIC CURRENT TO FLOW THROUGH THEM EASILY

25
Q

INSULATORS ARE APPLIANCES WHICH WILL…

A

PREVENT FLOW OF ELECTRICITY (GLASS OR PORCELAIN)

26
Q

SERVICE CONNECTION ARE WIRES THAT CONNECT THE CONSUMER OR HOME TO THE SECONDARY TRANSFORMER. THE MOST COMMON IS THREE-WIRE METHOD, WHERE THREE WIRES ARE TWISTED AROUND EACH OTHER, KNOWN AS ______.

A

TRIPLEX

27
Q

FIREFIGHTERS RESPONDING TO EMERGENCIES INVOLVING ELECTRICAL EQUIPMENT MUST WEAR…

A

FULL TURNOUTS

28
Q

THERE ARE 2 MAIN METHODS FOR DE ENERGIZING A BUILDING…

A

1: OPENING THE MAIN SWITCH OR BREAKER SWITCHES AT ELECTRICAL PANEL

#2: CUTTING WIRES UTILIZING LAFD EQUIPMENT

29
Q

THE CUTTING OF WIRES BY FIREFIGHTERS MUST BE CONFINED TO ____ VOLTAGE WIRES

A

LOW VOLTAGE

30
Q

WHEN CUTTING LOW VOLTAGE WIRES AT THE DRIP LOOP USING MECHANICAL AXE AND GAUNTLET GLOVES, CUT THE ________ CONDUCTOR FIRST.

A

CLOSEST (TO PREVENT REACHING OVER CHARGED WIRES)

31
Q

THE LOOPS SHOULD BE CUT AT THE SERVICE HEAD. IF IT IS NECESSARY TO CUT AT THE POLE, CUT ____ WIRE AT A TIME BEFORE IT GOES INTO THE TRIPLEX

A

ONE

32
Q

PIKE POLES, RUBBISH HOOKS, OR OTHER TOOLS SHOULD NOT BE USED TO CONTACT ENERGIZED EQUIPMENT

TRUE/FALSE

A

TRUE

33
Q

FOR VOLTAGES OF 600 OR MORE, CAL/OSHA & NFPA STANDARDS REQUIRE THAT AERIAL LADDERS BE OPERATED AT A MINIMUM CLEARANCE OF __ FT OF POWER LINES AND ELECTRICAL DEVICES

A

10 FT

34
Q

OVERHEAD COMMUNICATION CABLE NORMALLY FOUND ON THE LOWEST LEVEL OF A POWER POLE CAN BE ENERGIZED WITH UP TO __ VOLTS

A

50 VOLTS

35
Q

WHEN RESPONDING TO DOWNED OVERHEAD WIRES, HAVE RESPONDING PERSONNEL MAINTAIN THE DISTANCE BETWEEN 2 UNDAMAGED POLES FROM THE AFFECTED WIRE OR POLE

TRUE/FALSE

A

TRUE

36
Q

ACCORDING TO TRAINING BULLETIN #8, STREETLIGHTS CAN BE FED FROM CONDUCTORS CARRYING ____-____ VOLTS OR MORE

A

120 - 6150 VOLTS

37
Q

30/33/100 RULE

A

30-DEGREE FOG PATTERN
33FT FROM ENERGIZED SOURCE
100PSI MINIMUM

38
Q

THE CLEARLY IDENTIFIED METHOD TO ASSURE THAT FIRE PERSONNEL AND OTHER RESPONDERS DO NOT ENTER LIFE HAZARD ZONES INCLUDES THE USE OF A MINIMUM OF __ HORIZONTAL STRANDS OF BARRIER TAPE THAT STATE “DO NOT ENTER” OR “DO NOT CROSS”

A

3 HORIZONTAL STRANDS

39
Q

OCCUPANTS TRAPPED IN A VEHICLE BY ENERGIZED WIRES SHOULD REMAIN IN THEIR VEHICLE UNTIL THE POWER IS DE ENERGIZED. HOWEVER, THEY MAY BE ABLE TO DRIVE THE VEHICLE CLEAR OF WIRES. THE VEHICLE SHOULD BE DRIVEN CLEAR OF THE WIRES BY AT LEAST ___ FT.

A

35 FT

40
Q

INSTRUCTING VICTIMS TO EXIT A CHARGED VEHICLE IS VERY DANGEROUS AND SHOULD BE DONE ONLY WHEN A LIFE-THREATENING EMERGENCY EXISTS

TRUE/FALSE

A

TRUE

41
Q

FIREFIGHTERS AND FIRST RESPONDERS MUST REMAIN AWAY FROM A CHARGED VEHICLE AND RESIST THE URGE TO APPROACH OR GRAB THE VICTIM

TRUE/FALSE

A

TRUE

42
Q

MANHOLE COVERS OFTEN WEIGH ___LBS AND HAVE BEEN BLOWN ___FT INTO THE AIR AND A DISTANCE OF ___FT.

A

300LBS
75FT INTO THE AIR
125FT OUT

43
Q

THE LADWP TESTS GLOVES TO ______ VOLTS EVERY ___ DAYS

A

10,000 VOLTS EVERY 60 DAYS

44
Q

A SQUARE MANHOLE INDICATES A…

A

TRANSFORMER VAULT

45
Q

THE MAIN FIRE HAZARD WITHIN ELECTRICAL VAULTS LIES IN THE COOLING OIL USED IN THE TRANSFORMERS, WHICH HAS A FLASHPOINT BELOW ___°F

A

300°F

TRAINING BULLETINS (18 decks)

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