ABSOLUTES Flashcards
MINIMUM BREAKER SIZES:
Standard 2 Element Electric Water heater typically has 4500 watts (4.5Kw) using the Safe Surge formula , what is the minimum size breaker that can be installed?
Safe Surge/Over Current Protection Formula:
(Watts) ÷ (Volts) X (1.25) = 25 amp min Breaker Size or NEXT SIZE UP
Water heater: 25 min.Amps
Dryer: 30 Amps
Electric range: 40 Amps
OVERHEAD ELECTRIC SERVICE CLEARANCES:
Walkway: ___ ft.
Driveway: ___ ft.
Ground: ___ ft.
Street: ___ ft.
Pool: ___ ft. ____ft. horizontal (2003) _____
Diving board/Raised Platform: ___ ft. ____ft. horizontal (2003) _______
Light fixture @ pool: ___ ft. horizontal ____ ft.
Walkway: 10 ft.
Driveway: 12 ft.
Ground: 12 ft.
Street: 18 ft.
Pool: 22.5 ft. 10 ft. horizontal (2003) 22
Diving board/Raised Platform: 14.5 ft. 10 ft. horizontal (2003) 14
Light fixture @ pool: 12 ft. horizontal 14.5 ft.
OVERHEAD ELECTRIC SERVICE CLEARANCES FOR ROOFS:
4/12 or greater pitch: ___ft.
3/12 or less pitch: ___ft.
Deck/Walkable Surface: ___ft.
4/12 or greater pitch: 3 ft.
3/12 or less pitch: 8 ft.
Deck/Walkable Surface: 10 ft.
CORD LENGTHS:
240 volt window A/C: ____ft.
120 volt window A/C: ____ ft.
240 volt max cord length: ____ ft.
Food Waste disposal - min. cord length: ___”/ max. ___”
Dishwasher - min. cord length: ___”/ max.___”
Trash compactor - min. cord length: ___”/max. ___”
Range Cord Length ____’
Range Hood - min. cord length ____” max.___”
240 volt window A/C: 6 ft.
120 volt window A/C: 10 ft.
240 volt max cord length: 6 ft.
Food Waste disposal - min. cord length: 18’‘ / max. 36’‘
Dishwasher - min. cord length: 36’‘ / max. 48’‘
Trash compactor - min. cord length: 36’‘ / max. 48’‘
Range Cord Length 6’
Range Hood - min. cord length 18’‘ / max. 36’‘
FLEXIBLE GAS LINE LENGTHS:
Gas Appliance (excluding range or dryer): ___ft. (2006)
Gas stove or range: ___ ft.
Gas dryer: ___ ft.
Gas Appliance (excluding range or dryer): 3 ft. (2006)
Gas stove or range: 6 ft.
Gas dryer: 6 ft.
ROOF MINIMUM SLOPE:
Composition: _______
Clay or concrete tile: ________
Wood or metal: ________
Built-up: ________
Slate: _______
*A minimum slope of ________ or less for composition requires a double underlayment.
**When a roof slope is ______ or less the rafters are often referred to as _________ or __________
Composition: 2 / 12
Clay or concrete tile: 21/2 / 12
Wood or metal: 3 / 12
Built-up: 4 / 12
Slate: 4 / 12
*A minimum slope of 4 / 12 or less for composition requires a double underlayment.
**When a roof slope is 2 / 12 or less the rafters are often referred to as JOISTS or BEAMS.
MINIMUM DRAIN SIZES:
Basins: ______
Tub, Kitchen & Laundry sinks: ______
Shower & Floor drains: ______ Shower ________ (2006)
Toilets: ______ Macerating Toilet: ______
Laundry Stand Pipe: minimum diameter ____
Minimum & maximum height of a Laundry Stand Pipe above the P Trap is: ____ / ____
Basins: 1 1/4’’
Tub, Kitchen & Laundry sinks: 1 1/2’’
Shower & Floor drains: 2’‘Shower _1 1/2’’_ (2006)
Toilets: 3’‘Macerating Toilet: 3/4’‘
Laundry Stand Pipe: minimum diameter 2’‘
Minimum & maximum height of a Laundry Stand Pipe above the P Trap is: 18’‘ / 42’‘
STUDS:
Load Bearing__Non Load Bearing
Bore* ___% ___%
Notch ___% ___%
*Load bearing studs can be bored up to ___% if they are double studded, and not more than _____ consecutively.
Common location in a home where you would find double studs used: _______ ______
Load Bearing__Non Load Bearing
Bore*40% 60%
Notch 25%40%
*Load bearing studs can be bored up to _60%_ if they are double studded, and not more than _2_ consecutively.
Common location in a home where you would find double studs used: _KITCHEN, BATH, LAUNDRY, PLUMBED WALLS_
JOISTS:
Bore: ____ max., but no closer than ____ from the top or bottom.
Notch: ____ @ top; __ @ bottom end
Notch & Bore not closer than _______” to each other
Notches shall not be located in the _____ _____ of the joists
*Key to remember the bore or notch size for joist or studs is calculated using the actual size of the members, not the nominal size. (ie: actual size of a 2 x 4 is 1 1/2’’ X 3 1/2’’).
Bore: 1/3 max., but no closer than 2’‘ from the top or bottom.
Notch: 1/6 @ top; 1/4 @ bottom end
Notch & Bore not closer than 2’‘ to each other
Notches shall not be located in the MINIMUM 1/3<span>rd</span> of the joists
MINIMUM OPENINGS:
Crawl space:___” X ___”
Crawl space at perimeter wall: ___” X ___”
Crawl space with equipment: ___” X ____”
Crawl space with equipment max Distance it can be from the access opening: ___ feet, max Distance for service receptacle: ___ feet
Attic: Rough framed opening___” X ___”
Attic: Clear opening ___” X ___”
Crawl space: 18’’ X 24’‘
Crawl space at perimeter wall: 16’’ X 24’‘
Crawl space with equipment: 22’’ X 30’‘
Crawl space with equipment max Distance it can be from the access opening: 20 feet, max Distance for service receptacle: 25 feet
Attic: Rough framed opening 22’’ X 30’‘
Attic: Clear opening 20’’ X 30’‘
ATTIC AREA
When a attic has a ceiling height of ______”
and a attic floor space of ______ sq. ft.,
it requires a attic access opening of _______” X ______”
When a attic has a ceiling height of 30’‘
and a attic floor space of 30 sq. ft.,
it requires a attic access opening of 22’’ X 30’‘
