Electric Heat ESCO - HVAC Excellence Exam Questions & Answers 100%.

Before working on an electric furnace the tech should - ANSWERReview diagram, remove jewelry, and follow safety procedures. ALL OF THE ABOVE. A GFCI circuit breaker - ANSWERdetects current leaks to groound the conductor in an electric heat element is usually made of - ANSWERNichrome An example of resistive load is - ANSWERcrankcase heater an example of an inductive load is - ANSWERmotor an electric furnace is marked 208/230 single phase 60Hz A tech reads 200 vac at the power supply and determines - ANSWERthe voltage is too low voltage imbalance between any leg of 3 phase power supply may not exceed - ANSWER2% the limit switch on an electric furnace is a - ANSWERAutomatic reset switch the sequencer timers on electric heater will usually energize the 1st heating element after a time delay of - ANSWER1 to 30 sec the amount of btus produced by 1 watt of electricity is - ANSWER3.413 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 - ANSWER13,800 a furnace is using 15,500 watts approx Kw - ANSWER15.5 Kw a sequencer timer use _____ to close the contact points to the heater element - ANSWERheated snap-discs or bi-metal strips an electric furnace heating thermostat must - ANSWERopen on rise close on drop