Holiday Trip 2012, Owner'S Manual

Page: 165 / 242

160
H
ou
se
E
le
ct
ri
ca
l
-
8
2012 Trip
Circuit protection devices come in a variety
of shapes and ratings. Most common are the
blade style plug in fuse and auto reset circuit
breakers. These types of circuit protection
devices are readily available from auto supply
stores. Circuit protection devices in a 12 Volt
DC system are actually rated at 32 Volts DC
due to voltage variances in a 12 Volt DC
system. Replacement devices must use the
same amperage rating and be of the same type
as the original for proper circuit protection
and electrical safety. Generally a fault exists
in the circuit when an over-current condition
has caused a fuse to blow or circuit breaker
to trip. Until the condition that caused the
fault is corrected, replacing the fuse may be a
temporary fix. Continually replacing the fuse
or circumventing the protection device can
jeopardize safety and circuit integrity.
WARNING:
Replacement fuses or circuit breakers
must be of the same type and rating
as the original equipment. Installing
protection devices other than the
original type and rating will create
a safety hazard that will potentially
result in circuit and/or component
damage and fire.
Fuses:
Blade fuse comes in three sizes: Mini,
Standard and Maxi. Fuse color determines
amperage ratings. A blown fuse indicates an
over-current condition has occurred. Typically
the conductor strip in the center of the fuse is
broken, but not always, and is best verified by
use of a 12 Volt DC test light. Located atop
the blade style fuse housing are two exposed
terminals.
The fuse is good if the test light illuminates
at both terminals. This may require the circuit
be activated for power to be present at the fuse.
The fuse is bad if the test light illuminates at
only one terminal.
There are three types of Circuit Breakers:
Type 1 is an automatic reset type circuit
breaker. This type of breaker may cause
component damage under a short circuit
condition. It will not damage the circuit, the
installation or present a safety risk
Type 2 is an automatic reset type circuit
breaker. Under a short circuit condition, this
type of breaker will not cause component
damage or damage to the circuit, the
installation or present a safety risk.
Type 3 is a manual reset circuit breaker. This
type of breaker will open under a short circuit
condition and must be manually reset.
BLade Fuse Guide
mn standard max
Black 1
Gray 2 2 25
Violet 3 3
Pink 4 4
Tan 5 5 70
Brown 7 1/2 7 1/2 35
Red 10 10 50
Blue 15 15 60
Yellow 20 20 20
Clear 25 25 80
Green 30 30 30
Blue-Green 35
Orange 40 40
Mini, Standard and Maxi fuse colors and
amperage ratings
060086B
Exposed terminals.
060086c
a
B
c
d
e
Quarter is used for size comparison of fuses.
080528e
A. Manual Reset Circuit Breaker
B. Auto Reset Circuit Breaker
C. Standard Fuse
D. Mini Fuse
E. Maxi Fuse
Representation of various fuses and a circuit breaker.
060359c
Large amperage circuit
breaker.