General Questions Flashcards
(42 cards)
Dwelling services are sized at what %
83%
Non-coincidental loads are sized at what percent of highest load
125%
Feeders less than or equal to 100 amps use what column
60 degree C
Capacitors are rated for what percent of total amps
135%
How many feet of show window requires it’s own recept
12 ft
How many feet above sidewalk must service entrances conductors be
10 feet
What is the minimum disconnect size for a commercial building
60 amps
What size grounding electrode conductor must be protected from physical damage
6 or smaller
Minimum ground rod diameter
5/8”
Minimum ground rod spacing
6’
Minimum ground ring wire size
2
When sizing a disconnect, you must round down if the amperage is below
800 amps
Elementary schools require what type of recept
Tamper Proof
Car wash recepts are what type of location
Wet location
Minimum light pole hand hole size
2”x4”
General use snap switches at good for what percent of its rated use?
80%
What is the maximum surface temperature of T2A
536 degrees
In hospital general care areas, each bed location needs how many recepts
8
In hospital critical care areas, each bed location needs how many recepts
14
How many inches must separate class 1 and class 2/3 circuits
2 in
What is the smallest size conductor that can be run in parallel
1/0
Wire for services is sized using what temp column
75 deg C
What percent of FLA must motor conductors be sized for?
125%
What percent of motor FLA must a disconnect be sized for?
115%
