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