VOLTAGE DROP
the difference between the value of source voltage and load voltage
voltage drop
the amount of current a conductor can carry is named this
AMPACITY
derating is done to prevent overheating and premature failure of a conductors what?
insulation
What is the ampacity of three 4/0 aluminum THHN conductors
205 A
A _______ box is a box installed in a run of conduit for the purpose of making and access point for pulling conductors.
pull
voltage drop equation is derived from this basic equation
ohm's law
you can find voltage/ampacity requirements and other useful information for an appliance or motors on this attachment
Nameplate
a load that is expected to operate for 3 hours or more is called this
continuous load
What is the ampacity of three 8 AWG THHW installed in a wet location?
50 A
A _____ fitting is a part of a wiring system that is intended primarily to perform a mechanical function.
fitting
Voltage drop is recommended not to exceed ____ where reasonable efficiency is expected
3%
upsizing current carrying conductors also requires upsizing this as well
Ground
computers, TV, led drivers, as we al fluorescent electronic ballasts are considered this
non-linear load
Table 314.16(A) gives dimensions for standard size_______?
metal boxes
In the voltage drop equation, a single phase equation multiplies the length by 2. three phase multiplies the length by ___
1.73 or square root of 3
If using 90 deg column on table 310.16, what must you make sure is also rated for at least 90 deg in the circuit?
Terminals I.E. breakers, stak ons, crimps, and lugs
Having 7-9 current carrying conductors in a raceway will require you to derate by this amount?
70%
Two 4 AWG THWN-2 copper conductors are installed were the ambient temperature is 105*F. What is the ampacity of the conductors?
83 A
Conduit bodies that contain splices require __________ on the conduit body.
volume markings
Voltage droip is proportional to the____ of conductor
resistance
the adjustment factor for more than 30 current carrying conductors in a metal wireway
40%
Having 4-6 current carrying conductors in a raceway will require you to derate by this amount?
What is the ampacity of six 12-2 type NM conductors routed together through an opening in wood framing?
15 A
A 4-square box with two receptacles installed adds __________ additional conductors to the fill allowance?
4