Electric Heat ESCO - HVAC Excellence Exam Updated Correct Questions with Answers_ A+ Graded 100%

Electric Heat ESCO - HVAC Excellence Exam Updated Correct Questions with Answers_ A+ Graded 100% Before working on an electric furnace the tech should - CORRECT ANSWER-Review diagram, remove jewelry, and follow safety procedures. ALL OF THE ABOVE. A GFCI circuit breaker - CORRECT ANSWER-detects current leaks to groound the conductor in an electric heat element is usually made of - CORRECT ANSWER-Nichrome An example of resistive load is - CORRECT ANSWER-crankcase heater an example of an inductive load is - CORRECT ANSWER-motor an electric furnace is marked 208/230 single phase 60Hz A tech reads 200 vac at the power supply and determines - CORRECT ANSWER-the voltage is too low voltage imbalance between any leg of 3 phase power supply may not exceed - CORRECT ANSWER-2% the limit switch on an electric furnace is a - CORRECT ANSWER-Automatic reset switch the sequencer timers on electric heater will usually energize the 1st heating element after a time delay of - CORRECT ANSWER-1 to 30 sec the amount of btus produced by 1 watt of electricity is - CORRECT ANSWER-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-13,800 a furnace is using 15,500 watts approx Kw - CORRECT ANSWER-15.5 Kw a sequencer timer use _____ to close the contact points to the heater element - CORRECT ANSWER-heated snap-discs or bi-metal strips an electric furnace heating thermostat must - CORRECT ANSWER-open on rise close on drop a standard thermostat heat anticipator is ____ and wired in ____ with the heating control - CORRECT ANSWER-adjustable/series some thermostat manufacturers require a jumper connection on the thermostat subbase of heating and cooling thermostat in order to - CORRECT ANSWER-use a single transformer most electric heat elements use the following safties to prevent overheating - CORRECT 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 - CORRECT ANSWER-54,949 the control that prevents duct heater from operating unless there is adequate supply air is - CORRECT ANSWER-fan interlock the COP for electric resistance heat is - CORRECT ANSWER-1 to 1 what is the maximum kW element used on each contact of a residential heat sequencer - CORRECT ANSWER-5 kW electric heaters are generally rated at ____ volts ac for kW output - CORRECT ANSWER-240 the first stage of a sequencer usually has a set of contacts to - CORRECT ANSWER-start the blower fan motor an automatic reset safety on a heater element generally opens at ____*F - CORRECT ANSWER-130-190*F most heating elements are mounted on which type of insulator - CORRECT ANSWER-mica or ceramic a 10 kW electric heater operating at 240 v draws 42 amps, what will a 10 kW heater wired to 480 volts draw - CORRECT ANSWER-21 amps the purpose of a sequencer is to - CORRECT ANSWER-avoid a sudden power load