Electric
Heat
/
ESCO -
/ /
HVAC
/
Excellence
/
Exam Questions With Correct Answers
/ / / / /
Before
/working
/on
/an /electric /furnace /the /tech /should /- /correct /answer(s) /✔✔ /Review /diagram, /remove /jewelry,
/and /follow /safety /procedures. /ALL /OF /THE /ABOVE.
A /GFCI /circuit /breaker /- /correct /answer(s) /✔✔ /detects /current /leaks /to /groound
the
/conductor /in /an /electric /heat /element /is /usually /made /of /- /correct /answer(s) /✔✔ /Nichrome
An /example /of /resistive /load /is /- /correct /answer(s) /✔✔ /crankcase /heater
an /example /of /an /inductive /load /is /- /correct /answer(s) /✔✔ /motor
an
/electric
/furnace
/is
,/marked
/208/230
/single
/phase
/60Hz /
A
/tech
/reads
/200 /vac /at /the /power /supply /and /determines /- /correct /answer(s) /✔✔ /the /voltage /is /too /low
voltage
/imbalance
/between /any /leg /of /3 /phase /power /supply /may /not /exceed /- /correct /answer(s) /✔✔ /2%
the /limit /switch /on /an /electric /furnace /is /a /- /correct /answer(s) /✔✔ /Automatic /reset /switch
the
/sequencer
/timers /on /electric /heater /will /usually /energize /the /1st /heating /element /after /a /time /delay /of /-
/correct /answer(s) /✔✔ /1 /to /30 /sec
the /amount /of /btus /produced /by /1 /watt /of /electricity /is /- /correct /answer(s) /✔✔ /3.413 /btus
a /tech /reads /60 /amps /with /a /clamp /on /amp /meter /on /a /forced /air /furnace. /the /supply /voltage
/is /230 /volts /AC, /approx /how /many /watts /is /the /furnace /using /- /correct /answer(s) /✔✔ /13,800
a /furnace /is /using /15,500 /watts /approx /Kw /- /correct /answer(s) /✔✔ /15.5 /Kw
a
/sequencer
/timer
/use
, /_____
/to /close /the /contact /points /to /the /heater /element /- /correct /answer(s) /✔✔ /heated /snap-
discs /or /bi-metal /strips
an
/electric /furnace /heating /thermostat /must /- /correct /answer(s) /✔✔ /open /on /rise /close /on /drop
a
/standard
/thermostat
/heat
/anticipator
/is /____ /and /wired /in /____ /with /the /heating /control /- /correct /answer(s) /✔✔ /adjustable/series
some
/thermostat
/manufacturers
/require /
a
/jumper /connection /on /the /thermostat /subbase /of /heating /and /cooling /thermostat /in /order /to
/- /correct /answer(s) /✔✔ /use /a /single /transformer
most
/electric
/heat
/elements
/use
/the
/following /safties /to /prevent /overheating /- /correct /answer(s) /✔✔ /snap /disc /and /fusible /link
a
/tech
/reads
Heat
/
ESCO -
/ /
HVAC
/
Excellence
/
Exam Questions With Correct Answers
/ / / / /
Before
/working
/on
/an /electric /furnace /the /tech /should /- /correct /answer(s) /✔✔ /Review /diagram, /remove /jewelry,
/and /follow /safety /procedures. /ALL /OF /THE /ABOVE.
A /GFCI /circuit /breaker /- /correct /answer(s) /✔✔ /detects /current /leaks /to /groound
the
/conductor /in /an /electric /heat /element /is /usually /made /of /- /correct /answer(s) /✔✔ /Nichrome
An /example /of /resistive /load /is /- /correct /answer(s) /✔✔ /crankcase /heater
an /example /of /an /inductive /load /is /- /correct /answer(s) /✔✔ /motor
an
/electric
/furnace
/is
,/marked
/208/230
/single
/phase
/60Hz /
A
/tech
/reads
/200 /vac /at /the /power /supply /and /determines /- /correct /answer(s) /✔✔ /the /voltage /is /too /low
voltage
/imbalance
/between /any /leg /of /3 /phase /power /supply /may /not /exceed /- /correct /answer(s) /✔✔ /2%
the /limit /switch /on /an /electric /furnace /is /a /- /correct /answer(s) /✔✔ /Automatic /reset /switch
the
/sequencer
/timers /on /electric /heater /will /usually /energize /the /1st /heating /element /after /a /time /delay /of /-
/correct /answer(s) /✔✔ /1 /to /30 /sec
the /amount /of /btus /produced /by /1 /watt /of /electricity /is /- /correct /answer(s) /✔✔ /3.413 /btus
a /tech /reads /60 /amps /with /a /clamp /on /amp /meter /on /a /forced /air /furnace. /the /supply /voltage
/is /230 /volts /AC, /approx /how /many /watts /is /the /furnace /using /- /correct /answer(s) /✔✔ /13,800
a /furnace /is /using /15,500 /watts /approx /Kw /- /correct /answer(s) /✔✔ /15.5 /Kw
a
/sequencer
/timer
/use
, /_____
/to /close /the /contact /points /to /the /heater /element /- /correct /answer(s) /✔✔ /heated /snap-
discs /or /bi-metal /strips
an
/electric /furnace /heating /thermostat /must /- /correct /answer(s) /✔✔ /open /on /rise /close /on /drop
a
/standard
/thermostat
/heat
/anticipator
/is /____ /and /wired /in /____ /with /the /heating /control /- /correct /answer(s) /✔✔ /adjustable/series
some
/thermostat
/manufacturers
/require /
a
/jumper /connection /on /the /thermostat /subbase /of /heating /and /cooling /thermostat /in /order /to
/- /correct /answer(s) /✔✔ /use /a /single /transformer
most
/electric
/heat
/elements
/use
/the
/following /safties /to /prevent /overheating /- /correct /answer(s) /✔✔ /snap /disc /and /fusible /link
a
/tech
/reads
