Materials

Question 1

Your lead tells you to run power wire for the furnace. it goes 15’ in a joist from a handybox, then drops down to the furnace. What type of wire do you grab?

Answer 1

BX(Armored cable), it needs to be protected against PHYSICAL damage.
*Bonus 14/2 Bx
*Bonus I need ANTI SHORTS when I use BX and Approved connectors.

14 American Wire Gauge/ 2 Conductors

Question 2

Your lead tells you to run power wire for the Air conditioner. It’s being installed outside from an existing disconnect to the new A/C max amperage is 30A. What type of wire do you grab?

Answer 2

10/2 NMD
10 AWG/2 conductors
*Bonus Sealtite and Sealtite connectors

Question 3

Your lead tells you to run Communication wire for your newly installed DUCTED H/P. The previous unit only an A/c. What type of wire do you grab?

Answer 3

18/6 LVT
18 AWG
6 conductors

Question 4

Your lead tells you to run power/communication wire for the new Ductless H/p head. What type of wire do you grab?

Answer 4

14/3 NMD
14 AWG/3 Conductors

Question 5

Your lead tells you to run power for you brand new heat pump. WIth no previous outdoor system, it’s your job to run it from the indoor breaker panel. Unfortunately you have to run it 20’ in a damp crawl space AND 15’ exposed outside to the H/p location.The maximum amperage rating is 40 amps. What wire would you use?

Answer 5

8/2 TECK
8 AWG/2 conductors

Question 6

What is typically used to protect NMD wiring outside?

Answer 6

Sealtite
Liquidtite
NMFC

Non-Metallic Flexible Conduit

Question 7

You’re tasked with hanging 14/2 Romex from the breaker panel to the switch handybox. How do you accomplish this?

Answer 7

Using wire staples/Romex staples

Question 8

You’re taked with adding a receptacle to your furnace install to power a condensate pump. What type of receptacle must you use?

Answer 8

AN AFCI Receptacle

Ark Fault Circuit Interrupter

Question 9

You’re tasked with completing a new A/c install, the current A/c get power directly from the breaker panel. What must you do to bring this up to code?

Answer 9

Add a Equipment Disconnect.
Outside within 10’ of unit and visible.

Question 10

You’re tasked with installing an H/P outside, unfortunately the unit is will be in front of the current disconnect, you don’t have enough wire to move it with 3’ of clearance, how do you remedy this situation?

Answer 10

Add a weatherproof/outdoor box

Question 11

What type of screws do we use to fasten to concrete? What type of drill bit do we use to make the hole?

Answer 11

Concrete Screw/Tapcon
Carbide Drill Bit

Question 12

What could be use to fasten a Thermostat to a wall in the absences of a stud or backer plate?

Answer 12

Drywall anchor/plug

Question 13

What is used on black iron pipe before threading it into a fitting?

Answer 13

Pipe Dope/ Approved Teflon Tape

Question 14

What are the three ways we pipe gas inside a home?

How do we transport gas in a home

Answer 14

Gas Copper
Black Iron Pipe
CSST(Wardflex)

Corrugated Stainless Steel Tubing

Question 15

What needs to be done to Gas Copper, before you make a connection?

Answer 15

Clean, Ream, and Flare
(Add Flare Nut)

Cleaning and Reaming are trade practices.

Question 16

On a 3/4 BLK dirt pocket, what is it’s minimum depth required?

Answer 16

3”

Question 16

You’ve finished installing a Hybrid water tank, you’ve removed the previous gas fired tank, what most you do with the gas piping to make it code compliant?

Answer 16

Cap, and leak test the line

Question 17

Installing a brand new Package unit/Groundmount outside, after hooking up the gas piping what must be done to be code compliant?

Answer 17

Outdoor black Iron piping and fitting must be painted to protect it

Question 18

Can CSST/Wardflex be used outside of the home?

Answer 18

Yes, with conditions

Question 19

What must happen to black iron piping that is penetrating from the outside to the insdie of a house?

Answer 19

Wrapped with approved 10 mil tape or sleeved

Question 20

What is clearance to combustibles for Single Wall (C) Vent?
What is the connection requirement?

Answer 20

6”
3 screws minimum 120° apart

Question 21

Can you use double wall (B) vent through a ceiling?

Answer 21

Yes you must.
Single wall vent is not allowed

Question 22

What type of vent is used on High effecient Condensing equipment?

Answer 22

BH Vent
(System 636)

Question 23

How must BH vent be sloped?

Answer 23

1/4” per foot back to the appliance

Question 24

80,000 Btu/h must have what clearance to windows?
199,000 Btu/h?

Answer 24

80,000 = 1 Foot
199,000= 3 Feet

Question 25

What clearance to a natural gas regulator must your vent be?
Propane Regulator?

Answer 25

Natural gas= 3’
Propane -10’

Propane is HEAVIER than the air so it will pool along the ground!

Question 26

What material shouldn’t be used for a condensing furnace drain?

Answer 26

Copper
Steel
anything suseptible to corrosion

Condensate from a furnace is acidic,

Question 27

How much water can a condensing furnace produce?
Evaporator?

Answer 27

20L
Up to 40L on a humid day