NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
1. When do
Two rules determine whether or not electrical system needs updated to
electri-cal
current requirements:
systems req
updating?
(1) existing work needs updated if unsafe, and
(2) needs updated if not functioning properly.
2. Should Home inspectors usually report a defect that does not comply with
inspec-tors current re-quirement if he or she believes that the work should
report elec- comply.
trical
compliance
problems?
3. What is the differ- - both are safety related systems
ence between #1?
grounding and
bonding? (P.
7. What is electrical myth #2?
173)
4. When does
bonding
occur?
5. What is the
for-mula for
Ohm's Law?
6. What is
electrical myth
, NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
-grounding system limits h 1: electricity wants to return to ground
voltage surges and shunts
them safely to ground Truth: electricity want to return to its source
-bonding clears ground
faults in non-electrical
carrying material by
providing a path to
ground
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.
I (current in amps) =
E(voltage in
volts)/R(resistance in ohms)
Helpful saying:
-Amps & volts & ohm
-REI
-Amp=volts/ohm
M
y
t
, NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
WAYS
TO REMEMBER
8. How many
grounding
elec-trodes
are re-quired
in a resi-
dential
home?
9. WHAT ARE THE
3 COMMON
TYPES OF
GROUNDING
SYSTEMS?
10. Grounded
Elec-trode
Conduc-tor
Require-
ments (GEC)
11. WHAT IS
THE BEST
, NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
Myth 2: electricity steel rod or pipe or a copper rod or pipe driven at least eight feet into
the ground.
takes the path of least
(3) Metal water pipe (including metal well casings) in contact with the
resistance back to its ground for at least ten feet.
source. Truth: Compliance requirement:
-#8 AWG copper for 125 AMP and smaller
electricity takes all -#6 AWG copper for 150 AMP and greater
-#4 AWG copper for 200 AMP and greater
available paths.
-Aluminum wire may be used, but restriction make it impractical
Old construction: -In newer home, connection to water pipe GEC may not occur more that 5-
-One grounding electrode ft from where pipe enters home
usually req'd
IF IT IS METAL AND IS OR COULD BE NEAR ELECTRICAL WIRES, THEN
-Grounding
IT PROBABLY NEEDS TO BONDED TO GROUNDING WIRE OF
electrodes must be
UTILITY.
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
(1) Ufer ground: at least
20-feet of #4 rebar or #4
AWG bare copper wire
encased in concrete.
(2) A galvanized iron or
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
1. When do
Two rules determine whether or not electrical system needs updated to
electri-cal
current requirements:
systems req
updating?
(1) existing work needs updated if unsafe, and
(2) needs updated if not functioning properly.
2. Should Home inspectors usually report a defect that does not comply with
inspec-tors current re-quirement if he or she believes that the work should
report elec- comply.
trical
compliance
problems?
3. What is the differ- - both are safety related systems
ence between #1?
grounding and
bonding? (P.
7. What is electrical myth #2?
173)
4. When does
bonding
occur?
5. What is the
for-mula for
Ohm's Law?
6. What is
electrical myth
, NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
-grounding system limits h 1: electricity wants to return to ground
voltage surges and shunts
them safely to ground Truth: electricity want to return to its source
-bonding clears ground
faults in non-electrical
carrying material by
providing a path to
ground
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.
I (current in amps) =
E(voltage in
volts)/R(resistance in ohms)
Helpful saying:
-Amps & volts & ohm
-REI
-Amp=volts/ohm
M
y
t
, NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
WAYS
TO REMEMBER
8. How many
grounding
elec-trodes
are re-quired
in a resi-
dential
home?
9. WHAT ARE THE
3 COMMON
TYPES OF
GROUNDING
SYSTEMS?
10. Grounded
Elec-trode
Conduc-tor
Require-
ments (GEC)
11. WHAT IS
THE BEST
, NHIE Home Inspector Manual: Electrical System Study Exam Questions
with all Correct & 100% Verified Answers |Latest Version |Already Graded A+
Myth 2: electricity steel rod or pipe or a copper rod or pipe driven at least eight feet into
the ground.
takes the path of least
(3) Metal water pipe (including metal well casings) in contact with the
resistance back to its ground for at least ten feet.
source. Truth: Compliance requirement:
-#8 AWG copper for 125 AMP and smaller
electricity takes all -#6 AWG copper for 150 AMP and greater
-#4 AWG copper for 200 AMP and greater
available paths.
-Aluminum wire may be used, but restriction make it impractical
Old construction: -In newer home, connection to water pipe GEC may not occur more that 5-
-One grounding electrode ft from where pipe enters home
usually req'd
IF IT IS METAL AND IS OR COULD BE NEAR ELECTRICAL WIRES, THEN
-Grounding
IT PROBABLY NEEDS TO BONDED TO GROUNDING WIRE OF
electrodes must be
UTILITY.
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
(1) Ufer ground: at least
20-feet of #4 rebar or #4
AWG bare copper wire
encased in concrete.
(2) A galvanized iron or
