Inspector study guide - Fire Hazard Recognition Flashcards
Most electrical fires are caused by _____, overloading, or _____________.
arcs, overheating electrical cords
Detailed electrical inspections are typically the responsibility of a qualified ________.
electrical inspector
______ is the pressure (potential) of the electricity in a circuit
volt
______ is the quantity of electricity flowing through the circuit
amp
_______is the friction encountered by the electric current
resistaance
Resistance produces _____ and _____ in voltage
heat, drop
3 things that determine the resistance of a wire
- size
- material
- length
______ is a unit of power that is equal to the voltage times the amperes
watt
currents of ___________ milliamperes or more may be lethal
100 to 200
four common causes of electrical fires
1 - old or worn electrical equipment
2 - improper use
3 - defective electrical installations
4 - overloading
__________ is an accumulation of electrical charges on opposing surfaces created by the separation of unlike materials or movement of the surfaces
static electricity
3 control measures to dissipate generated charges (static electricity)
1 - maintaining humidity of 60-70%
2 - bonding the two objects together
3 - grounding the objects
A working space of not less than _______ shall be provided in front of electrical service equipment
30” wide x 36” deep x 78” high
Extensions cords may not replace
permanent wiring
extensions cords may not …..
replace permanent wiring
be permanently attached to the structure
pass under rugs
Extension cords shall only be used with __________
portable appliances
storage shall be maintained _____ or more below the ceiling in nonsprinklered areas
2’
storage shall be maintained ______ or more below the sprinkler head deflectors in sprinklered areas of building
18”
combustible materials shall not be stored in ______ rooms, ______rooms, or ________rooms
boiler, mechanical, electrical
primary hazard is ____________ in lumberyards
excessive fire load
lumber stacks shall not exceed ________ in height
20’
driveways should have a minimum width of _______
15’
_______ heating devices shall not be allowed in the lumber storage area
portable
permanent lumber storage areas shall be surrounded with a minimum of a __________ high fence
6’