OREGON HEATING OIL TANK SUPERVISOR
EXAM SCRIPT 2026 COMPREHENSIVE EXAM
Q&A STUDY GUIDE
◉ #2 oil home heating fuel is Answer: 85% carbon 15% hydrogen
◉ What is the voltage on primary and secondary side of burner
transformer Answer: 120 v primary 10,000 v for secondary
◉ What is a Hartford loop needed for Answer: Prevent water from
siphoning from boiler
◉ What two readings are needed to find out efficiency Answer:
Stack temperature and 02 or C02 readings
◉ black wire in a typical electrical circuit is called the Answer: hot
wire
◉ a white wire in a typical electrical circuit is called the Answer:
neutral
◉ the force or electrical pressure that produces an electrical current
is Answer: voltage
,◉ ----- is the flow or movement of electrons Answer: amperage
◉ ------is the unit of resistance Answer: ohm
◉ if there was a circuit with 120 volts and a resistance of 20 ohms
what would be the amps of that circuit. what formula is used
Answer: E (120)divided by R (20) or E/R=6amps
◉ what type of circuit has more than one path to complete circuit
Answer: parallel
◉ alternating current in the US operates at how many cycles per
second Answer: 60
◉ electrical wire is rated for Answer: ampacity
◉ 12 gauge wire would typically be good for up to how many amp
circuit breaker Answer: 20 amp
◉ 10 gauge wire would typically be good for up to how many amp
circuit breaker Answer: 30 amp
, ◉ 14 gauge wire would typically be good for up to how many amp
circuit breaker Answer: 15 amp
◉ all electrical wire connections should be made where Answer:
junction box
◉ where are the hot wires connected on single pole switch Answer:
gold terminals
◉ how are the neutral wires connected when wiring a single pole
switch Answer: together
◉ what type of circuit has one path to complete circuit Answer:
series
◉ the code for electrical work done in Massachusetts is Answer:
National Electrical Code
◉ a device that responds to change in air temperature opening or
closing a switch is called Answer: thermostat
◉ what is the safety that opens if temperature goes above preset
point Answer: limit control
EXAM SCRIPT 2026 COMPREHENSIVE EXAM
Q&A STUDY GUIDE
◉ #2 oil home heating fuel is Answer: 85% carbon 15% hydrogen
◉ What is the voltage on primary and secondary side of burner
transformer Answer: 120 v primary 10,000 v for secondary
◉ What is a Hartford loop needed for Answer: Prevent water from
siphoning from boiler
◉ What two readings are needed to find out efficiency Answer:
Stack temperature and 02 or C02 readings
◉ black wire in a typical electrical circuit is called the Answer: hot
wire
◉ a white wire in a typical electrical circuit is called the Answer:
neutral
◉ the force or electrical pressure that produces an electrical current
is Answer: voltage
,◉ ----- is the flow or movement of electrons Answer: amperage
◉ ------is the unit of resistance Answer: ohm
◉ if there was a circuit with 120 volts and a resistance of 20 ohms
what would be the amps of that circuit. what formula is used
Answer: E (120)divided by R (20) or E/R=6amps
◉ what type of circuit has more than one path to complete circuit
Answer: parallel
◉ alternating current in the US operates at how many cycles per
second Answer: 60
◉ electrical wire is rated for Answer: ampacity
◉ 12 gauge wire would typically be good for up to how many amp
circuit breaker Answer: 20 amp
◉ 10 gauge wire would typically be good for up to how many amp
circuit breaker Answer: 30 amp
, ◉ 14 gauge wire would typically be good for up to how many amp
circuit breaker Answer: 15 amp
◉ all electrical wire connections should be made where Answer:
junction box
◉ where are the hot wires connected on single pole switch Answer:
gold terminals
◉ how are the neutral wires connected when wiring a single pole
switch Answer: together
◉ what type of circuit has one path to complete circuit Answer:
series
◉ the code for electrical work done in Massachusetts is Answer:
National Electrical Code
◉ a device that responds to change in air temperature opening or
closing a switch is called Answer: thermostat
◉ what is the safety that opens if temperature goes above preset
point Answer: limit control
