Electric heat Exam 100% Accurate!

Make sure electric power at the furnace is turned off - ANSWERWhat is the first thing a technician should do before working on a funace? Current leaks to ground - ANSWERA GFCI detects what? Nichrome - ANSWERThe conductor in an electric heat element is usually made of? A crankcase heater - ANSWERAn example of a resistive heater is? Motor - ANSWERAn example of a inductive load is a? The voltage is within allowable limits - ANSWERAn electric furnace is marked 208/230- single phase-60 Hz. 200 VAC at the power supply and determines? 2% - ANSWERVoltage between any legs of 3- phase power supply may not exceed what percentage of voltage? Automatic reset switch - ANSWERThe limit switch on an electric furnace is a? 1 to 30 seconds - ANSWERThe sequencer timers on electric heaters will usually energize the 1st heating element after a time delay of? 3.413 BTU's - ANSWERThe amount of BTU's produced by one watt of electricity is? 13,800 - ANSWERA technician reads 60 amps with a clamp-on ammeter on a forced air furnace. The supply voltage is 230 volts AC. Approximately how many watts is the furnace using? 15.5kw - ANSWERA furnace is using 15,500 watts of power. What is the approximate kW rating? heated snap-discs or heated bi-metal strips - ANSWERSequence timers use what to close contact points to the heater element? Temperature - ANSWERAn electric furnace heating thermostat must must open and close on the rise of? Series and adjustable - ANSWERA standard thermostat heat anticipatory is wired in what and can be what?