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,NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
Terms in this set (119)
When do electrical systems req updating? Two rules determine whether or not electrical system needs updated to current
requirements:
(1) existing work needs updated if unsafe, and
(2) needs updated if not functioning properly.
Should inspectors report electrical compliance Home inspectors usually report a defect that does not comply with current
problems? requirement if he or she believes that the work should comply.
What is the difference between grounding and - both are safety related systems
bonding? (P. 173) - grounding system limits voltage surges and shunts them safely to ground
- bonding clears ground faults in non-electrical carrying material by providing a
path to ground
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
,NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
When does bonding occur? Bonding occurs when metal that could carry electricity (but is not supposed to)
is intentionally connected together to provide a permanent "low resistance
path" that is capable of conducting electricity back to its source.
What is the formula for Ohm's Law? I (current in amps) = E(voltage in volts)/R(resistance in ohms)
Helpful saying:
- Amps & volts & ohm
- REI
- Amp=volts/ohm
What is electrical myth #1? Myth 1: electricity wants to return to ground
Truth: electricity want to return to its source
What is electrical myth #2? Myth 2: electricity takes the path of least resistance back to its source.
Truth: electricity takes all available paths.
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
, NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
How many grounding electrodes are required in a Old construction:
residential home? - One grounding electrode usually req'd
- Grounding electrodes must be bonded together using same size wire
New construction:
- metal water pipe may not be only grounding electrode
- 2 grounding electrodes req'd if rod and pipe grounding electrode is used
WHAT ARE THE 3 COMMON TYPES OF GROUNDING (1) Ufer ground: at least 20-feet of #4 rebar or #4 AWG bare copper wire
SYSTEMS? encased in concrete.
(2) A galvanized iron or steel rod or pipe or a copper rod or pipe driven at least
eight feet into the ground.
(3) Metal water pipe (including metal well casings) in contact with the ground
for at least ten feet.
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf
NHIE Home Inspector Manual_ Electrical System Study Exam Questions with Answers.pdf