ESCO PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS
GUARANTEED TO PASS.
⫸ 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. Answer: 13,800
⫸ a furnace is using 15,500 watts approx Kw. Answer: 15.5 Kw
⫸ a sequencer timer use _____ to close the contact points to the heater
element. Answer: heated snap-discs or bi-metal strips
⫸ an electric furnace heating thermostat must. Answer: open on rise
close on drop
⫸ a standard thermostat heat anticipator is ____ and wired in ____ with
the heating control. Answer: adjustable/series
⫸ some thermostat manufacturers require a jumper connection on the
thermostat subbase of heating and cooling thermostat in order to.
Answer: use a single transformer
, ⫸ most electric heat elements use the following safties to prevent
overheating. Answer: snap disc and fusible link
⫸ a tech reads 70 amps to the single phase heater . the supply voltage is
230 volts Ac. Approx how many btus is the furnace producing. Answer:
54,949
⫸ the control that prevents duct heater from operating unless there is
adequate supply air is. Answer: fan interlock
⫸ the COP for electric resistance heat is. Answer: 1 to 1
⫸ what is the maximum kW element used on each contact of a
residential heat sequencer. Answer: 5 kW
⫸ electric heaters are generally rated at ____ volts ac for kW output.
Answer: 240
⫸ the first stage of a sequencer usually has a set of contacts to. Answer:
start the blower fan motor
⫸ an automatic reset safety on a heater element generally opens at
____*F. Answer: 130-190*F
QUESTIONS WITH ANSWERS
GUARANTEED TO PASS.
⫸ 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. Answer: 13,800
⫸ a furnace is using 15,500 watts approx Kw. Answer: 15.5 Kw
⫸ a sequencer timer use _____ to close the contact points to the heater
element. Answer: heated snap-discs or bi-metal strips
⫸ an electric furnace heating thermostat must. Answer: open on rise
close on drop
⫸ a standard thermostat heat anticipator is ____ and wired in ____ with
the heating control. Answer: adjustable/series
⫸ some thermostat manufacturers require a jumper connection on the
thermostat subbase of heating and cooling thermostat in order to.
Answer: use a single transformer
, ⫸ most electric heat elements use the following safties to prevent
overheating. Answer: snap disc and fusible link
⫸ a tech reads 70 amps to the single phase heater . the supply voltage is
230 volts Ac. Approx how many btus is the furnace producing. Answer:
54,949
⫸ the control that prevents duct heater from operating unless there is
adequate supply air is. Answer: fan interlock
⫸ the COP for electric resistance heat is. Answer: 1 to 1
⫸ what is the maximum kW element used on each contact of a
residential heat sequencer. Answer: 5 kW
⫸ electric heaters are generally rated at ____ volts ac for kW output.
Answer: 240
⫸ the first stage of a sequencer usually has a set of contacts to. Answer:
start the blower fan motor
⫸ an automatic reset safety on a heater element generally opens at
____*F. Answer: 130-190*F
