37 True/False questions

Temperature /pressure relief valve's are typically rated at? → 150 psi
210 *F 
Wire size for 200 amps → Copper #2/0
Aluminum #4/0 
Typical slope for waste plumbing? → 1/4" per ft

Wire size for 125 amps → Copper #2
Aluminum #1/0 
How much overlap is required on a asphalt shingle valley? → 3/8"

Maximum Amperage for #14 gauge wire → Copper 110 amps
Aluminum 80 amps 
Maximum Amperage for #12 gauge wire → Copper 20 amps
Aluminum 15 amps 
It is okay to have a nongrounded receptacle within 6 inches of water? → 3"

What two locations is a check valve typically installed to prevent sewer backup into the basement? → Floor drains &
Main drain line 
Wire size for 60 amps → Copper #10
Aluminum #8 
Maximum Amperage for #6 gauge wire → Copper 60 amps
Aluminum 3540 amps 
How is the electrical system in most older homes grounded? → ...

Can 3 tab asphalt shingles be installed on a 2/12" pitch roof? → Yes, but only if there is two layers of felt paper.

Wire size for 30 amps → Copper #6
Aluminum #4 
Wire size for 100 amps → Copper #4
Aluminum #2 
Plumbing vents must terminate at least ___??? → 10 ft from a window &
6" above the roof 
Maximum Amperage for #1 gauge wire → Copper 40 amps
Aluminum 30 amps 
What are the three requirements for subpanels → Copper #6
Aluminum #4 
How far apart should wood shakes/shingles be placed? → 1/3

No more than ___ of a wood shingle should be exposed? → 1/3

What determines the amount of electricity (amperage) a wire can carry? → Size (diameter)

Maximum Amperage for #4 gauge wire → Copper 40 amps
Aluminum 30 amps 
Maximum number of disconnects to shut off on the main panel is? → Copper 60 amps
Aluminum 3540 amps 
What is the minimum diameter and extension height above the roof line of event pipe to prevent frost /snow closure? → 6 ft

Coppertosteel connections undergo a ____? → Electrolytic reaction

Two 3 ft appliance connectors can be connected to make a 6 ft connection? → 6 ft

Clay tile roof should have how much overlap? → A vent that also serves as a drain.

In addition to a dielectric coupler, copper and galvanized steel can be joined by a brass converter fitting? → True

Maximum Amperage for #3 gauge wire → Copper 80 amps
Aluminum 60 amps 
What is the maximum length of a flexible gas appliance connector? → ...

Maximum Amperage for #2 gauge wire → Copper 40 amps
Aluminum 30 amps 
Maximum Amperage for #10 gauge wire → Copper 30 amps
Aluminum 25 amps 
Maximum Amperage for #8 gauge wire → Copper 90 amps
Aluminum 70 amps 
What is a wet vent? → A vent that also serves as a drain.

Wire size for 150 amps → Copper #1/0
Aluminum #2/0 
A built up roof with a 12" lap joint is hoy many ply? → 3"

What is the biggest improvement between knobandtube wiring and modern cable? → The use of grounding