TCFP FIRE INVESTIGATOR EXAM
ACTUAL EXAM 500 QUESTIONS AND
CORRECT DETAILED ANSWERS
What is ordinary construction? Exterior walls are masonry and frame is wood.
What is wood frame construction? Lightweight wood construction, used in apartments,
houses.
What is platform frame construction? Each floor is a seperate platform.
What is balloon frame construction? The wall studs extend from the foundation to the
roof.
What is Ohm's Law? V=IR
(E = I x R)
What is voltage? Pressure
,What is current? Flow
What is resistance? Friction, opposition to the flow
What is an overload? Power needs exceed the circuit's capacity.
Alternating Current VS Direct Current Alternating current - the electrons flow out from
the source and then back to it, alternating directions.
Direct current - electrons flow one way.
Single Phase service Residential. Three conductors: Two insulated conductors at 120 V
each, and a bare ground wire.
Three phase system Commercial. Four conductors: Three insulated conductors (480, 240,
or 208 V), and a bare ground wire.
,What is the difference between grounding and bonding? Grounding connects the system
to the earth (ground). Bonding connects to systems together so the charge stays the same
between them.
What is overcurrent protection? A device that protects the system from excess current.
Includes:
Circuit breakers
Plug fuses
Type S fuses
Time delay fuses
Cartridge fuses
What are the colors of residential wires? Hot - black or red
Neutral - gray or white
Ground - bare or green
What are some methods of electrical heat production? Resistance heating
Short circuit
Ground fault
, Parting Arc
Excessive current
What is the difference between and arc and a spark? Sparks are thrown metal particles
Arcs are brief discharges of electricity
What is arc tracking? Arc following salts, dusts, or liquids along a path.
What is arc mapping? Mapping out of electrical damage in a circuit.
What is static electricity? A stationary charge caused by movement of one object against
another. Lighting is a static disharge.
What are the five conditions nessecery for Static Arc Ignition? A Means of static
generation
A means of accumulating and maintaining the charge
A static discharge with sufficient energy
A fuel source
ACTUAL EXAM 500 QUESTIONS AND
CORRECT DETAILED ANSWERS
What is ordinary construction? Exterior walls are masonry and frame is wood.
What is wood frame construction? Lightweight wood construction, used in apartments,
houses.
What is platform frame construction? Each floor is a seperate platform.
What is balloon frame construction? The wall studs extend from the foundation to the
roof.
What is Ohm's Law? V=IR
(E = I x R)
What is voltage? Pressure
,What is current? Flow
What is resistance? Friction, opposition to the flow
What is an overload? Power needs exceed the circuit's capacity.
Alternating Current VS Direct Current Alternating current - the electrons flow out from
the source and then back to it, alternating directions.
Direct current - electrons flow one way.
Single Phase service Residential. Three conductors: Two insulated conductors at 120 V
each, and a bare ground wire.
Three phase system Commercial. Four conductors: Three insulated conductors (480, 240,
or 208 V), and a bare ground wire.
,What is the difference between grounding and bonding? Grounding connects the system
to the earth (ground). Bonding connects to systems together so the charge stays the same
between them.
What is overcurrent protection? A device that protects the system from excess current.
Includes:
Circuit breakers
Plug fuses
Type S fuses
Time delay fuses
Cartridge fuses
What are the colors of residential wires? Hot - black or red
Neutral - gray or white
Ground - bare or green
What are some methods of electrical heat production? Resistance heating
Short circuit
Ground fault
, Parting Arc
Excessive current
What is the difference between and arc and a spark? Sparks are thrown metal particles
Arcs are brief discharges of electricity
What is arc tracking? Arc following salts, dusts, or liquids along a path.
What is arc mapping? Mapping out of electrical damage in a circuit.
What is static electricity? A stationary charge caused by movement of one object against
another. Lighting is a static disharge.
What are the five conditions nessecery for Static Arc Ignition? A Means of static
generation
A means of accumulating and maintaining the charge
A static discharge with sufficient energy
A fuel source
