Parallax Power Supply 7300 Series Instruction sheet

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The Power to Bring People and Places Together !
All information, drawings, flowcharts, and schematics are the
property of Parallax Power Supply L.L.C. All rights reserved.
Refer installation and servicing to qualified service
personnel. Service information provided solely for use by
Licensed Electricians and Certified RV Technicians. No
endorsement of technical expertise, arising from the use of the
information supplied is either expressed or implied.
7300 Series Installation Guidelines
120 VAC Electrical installation shall comply with Article
551 and other applicable sections of the National Electric
Code.
12 VDC installation shall comply with ANSI/RVIA 12 V.

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7300 Series AC Wiring
1. Horizontal Mounting Only! Mount the 7300 Series to a
vertical surface with the front of the control center open to
the living area of the RV. Leave adequate space behind
unit for ventilation and wire routing.
2. Install appropriately sized conduit nipples on all AC or DC
Chassis knockouts removed to provide wire support and
strain relief.
3. Panel rated for a main 30 ampere and a maximum of 5
branch circuits. See AC wiring label for list of suitable
breakers for main and branch circuits. Use suitable filler
plates for any unused breaker locations.
4. Connect 30 ampere Shore line cord (black) “hot” lead into
base of 30 ampere maximum main breaker.
5. NEC requires breaker “hold-down” bracket to secure
30 ampere “main” breaker.
6. Shore Line and 120 VAC load circuit (white) Neutrals
connect to this isolated terminal bar.
7. Shore Line and 120 VAC load circuit (green) grounds and
bonding conductor connect to this terminal bar.
8. AC bond routing hole for (# 8 AWG minimum required)
AC bonding conductor.
9. 120 VAC load breakers amperage rating chosen by AWG
wire size used for the load. Connect to (black) load circuit
“hot” leads. #14 AWG “Romex” connect to maximum15
ampere load breaker. #12 AWG “Romex” connect to
maximum 20 ampere load breaker.
10. Connect wire pin on (black) converter power “hot” lead to
a 20 ampere (maximum) load breaker.
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Product shown with Door and dead front plate removed.
Refer to breakers and wiring labels for
terminal torque ratings. .
Electrical installation shall comply with
Article 551 and other applicable sections
of the National Electric Code.
*** “Pigtail” lead not to be utilized
unless load and load circuit
wiring for this circuit originally
installed in the Vehicle
Manufacturer’s plant facility.
*** Note- AC Breakers and DC load fuses not supplied with unit.

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Parallax Power Supply L.L.C. Technical Note
ISSUES CONCERNING THE MOUNTING CLEARANCES FOR THE 7300 SERIES POWER CENTERS.
There seems to be some confusion about a statement in the Owner's Manual for the 7300 series power centers. The statement is in the Mounting clearances
portion of the document. The intention of this letter is to clarify the meaning and intent of the statements.
The statement is made that there must be provided a minimum of 22 inches clearance to the front of the converter. Also, that adequate room should be left for
wire routing and fan air intake located in the top and rear of the converter. Another marking on the nameplate label required by UL states that the converter
should not be mounted in zero clearance compartments because overheating and thermal shutdown will result.
As to the issue of the 22-inch clearance to the front of the converter:
This statement was made in reference to the NEC article 551-45(b) exception No 1 pertaining to the AC panelboard section of the converter. Also see the RVIA
handbook page E-66. It simply states that the power center panelboard must have 22 inches of clearance workspace after Installation.
The panelboard is considered exposed where the panelboard face is within 2 inches of the finished surface to which it is mounted . A non-locking decretive
door may be installed in front of the distribution panelboard however the panelboard must be within 2 inches of a finished surface, not including the door
thickness. This is so that the panelboard can be readily accessed when the door is opened, exposing the 22-inch minimum clearance workspace but not allowing
enough room between the panelboard and the door for storage.
As to the issue of the adequate room for wire routing and fan air intake:
Our intent here is to state that there must be enough clearance around the converter to provide adequate intake airflow for cooling the converter system
electronics. Also you must leave enough room for the AC and DC field wiring to be installed. In most cases leaving enough room for the field wiring will assure
adequate air intake clearance. The main concern seems to be about the clearance to the converter exhaust louvers located in the front of the converter when a
decorative door is added over the front of the converter. Because of physical design of the converter the exhaust louvers and the AC panelboard are in the same
plane, hence the added door will not be greater than 2 inches from the louvers because of compliance with NEC 551-45 (b) requirement for the panelboard. This
will restrict to some degree the exhaust airflow.
The only way to attack this problem is through trial and error. The converter must be placed under the clearance-limiting condition then its operation monitored
to verify correct operation. If the converter shuts down due to overheating then the clearance area must be increased to allow proper airflow. The converter has
been tested under completely blocked ventilation conditions and will not become a fire hazard but will not hold up to its full rated output load specifications.
Please keep in mind that operating the converter under restricted air flow conditions will elevate the operating temperatures inside the converter and may reduce
the life expectancy over time. The converter was designed to operate indefinitely at full load @25c (77f) ambient with the ventilation openings open to the
living quarters.
Parallax Power Supply L.L.C. cannot be held liable for poor performance or failures of the converter due to restricted air flow installations.

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5432
Main
Line
When Equipped with " Option A" option, suitable for use in accordance
with article 702 of the National Electrical Code, ANSI/NFPA 70.
Refer to
only when
using Main
Breaker
Refer to
only when
using Line
Terminal
FIELD WIRING 60 C MIN.
TORQUE RATINGS:
Line Terminal: 35 IN. LBS.
Neutral Bar: 35 IN. LBS.
Equip. Ground: AWG IN. LBS.
8 40
10 - 14 35
Line Terminal
10 - 14 CU Conductor
Isolated
Neutral
10 - 14 CU
Equip. Ground
Wiring Connector
NOTE: One of the typical diagrams, shown below
pertains to this model. Main breaker must be used when
3 or more branch breakers are used. The following
breakers are suitable for MAIN and BRANCH breakers:
Bryant - BR , BD, G FC B, Filler Plate-fp-1B
ITE Gould - QP, QT, Filler Plate-QF3
Thomas & Betts - TB, TBBD
Filler Plate - FP-1CTB
Square D - HOM : Filler Plate-HO M FP
TORQUE RATINGS: 8-14 AWG - 36 IN. LBS.
Square D - HOM T: Filler Plate-HOMFP
TORQUE RATINGS: 8-14 AWG - 26 IN. LBS.
Short circuit rating of this panelboard is 10,000 RMS symmetrical
amperes, 120VAC, but the rating is limited to the lowest interrupting
capacity at a supply voltage of any breaker installed. The replacement
circuit breakers must be of the same type and interrupting ratings.
MOUNT PANEL AS SHOWN BELOW
PANELBOARD WIRING DIAGRAM
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7300 Series Wiring Labels
120 VAC Wiring Label
(located on back of metal dead front plate
covering breaker compartment)
Electrical installation shall
comply with Article 551 and
other applicable sections of the
National Electric Code.

1-800-443-4859
The Power to Bring People and Places Together !
Examples of Listed Circuit Breaker Types

1-800-443-4859
The Power to Bring People and Places Together !
All information, drawings, flowcharts, and schematics are the
property of Parallax Power Supply L.L.C. All rights reserved.
Refer installation and servicing to qualified service
personnel. Service information provided solely for use by
Licensed Electricians and Certified RV Technicians. No
endorsement of technical expertise, arising from the use of the
information supplied is either expressed or implied.
7300 Series Wiring Labels
DC Wiring Label
(located inside door right side)
12 VDC installation shall comply
with ANSI/RVIA 12 V.
Fuse Diagram
Replace with Little Fuse type 257 fuse
Or Bussmann type ATC fuse.
Max. Reverse Polarity Protection
Fuse size: 30A
A: AC DISTRIBUTION PANEL
This panel contains the AC breakers for each of the 120 VAC branch circuits
of the RV. To turn AC breakers ON or OFF, switch breaker handle. Breaker
posistion is indicated by visual ON, OFF. To reset a tripped breaker, switch
breaker handle OFF, then ON
B: DC DISTRIBUTION PANEL
This panel contains the 12 volt DC fuses for each of the 12 VDC load circuits
of the RV. The DC distribution panel is designed for blade type fuses with a
maximum size of 20 amperes. If a fuse blows, do not replace with a fuse larger
than indicated on the label.
C: Power Converter - 120 VAC TO 12 VDC
When 120 VAC is connected to the Power Converter section either via
commercial power or generator, the converter will automatically provide the 12
volt DC power to operate the 12 volt DC power lights and 12 volt DC motors in
the RV. When 120 VAC is not connected to the Power Converter section, the RV
storage battery(ies) automatically provide the necessary 12 volt DC to operate
this equipment.
D: BATTERY CHARGING SECTION
When 120 VAC is connected to the Power Converter section, the total DC
amperage output of the converter is available for recharging the RV battery(ies),
minus current used by 12 volt load equipment.
E: INSTALLATION REQUIREMENTS (HORIZONTAL MOUNTING ONLY)
Mount the series 7300 Power Plus Control to a verticle surface with the
front of the control center open to the living area of the RV. Leave adequate
room for ventilation and wire routing.
A: CONVERTER OUTPUT: CKTS 1 - 9 VDC Positive load circuits for RV 12 volt loads.
DO NOT USE HIGHER THAN 20 AMPERE FUSE.
B: REVERSE BATTERY POLARITY PROTECTION FUSES. REPLACE WITH 30
AMPERE MAXIMUM.
C: LUG FOR POSITIVE LEAD OF 12 VOLT BATTERY. Use #8 AWG CU conductor
with 90 degree Celcius insulation rating minimum.
D: LUG FOR NEGATIVE LEAD OF 12 VOLT BATTERY. Use #8 AWG CU conductor
with 90 degree Celcius insulation rating minimum.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE
OR ELECTRIC SHOCK, REPLACE ONLY WITH SAME
RATINGS AND TYPE OF FUSE.
51092338-000
Maximum branch Circuit Fuse size: 20 A

1-800-443-4859
The Power to Bring People and Places Together !
All information, drawings, flowcharts, and schematics are the
property of Parallax Power Supply L.L.C. All rights reserved.
Refer installation and servicing to qualified service
personnel. Service information provided solely for use by
Licensed Electricians and Certified RV Technicians. No
endorsement of technical expertise, arising from the use of the
information supplied is either expressed or implied.
7300 Series DC Wiring
1. Converter DC output lead.
2. Converter “reverse battery polarity”
protection fuses.
3. “C” Terminal – Connect to battery
Positive wiring. # 8 CU AWG
minimum w/ 90 degree Celsius
insulation rating required.
4. “D” Terminal – Connect to 12 volt
load Negatives and battery Negative.
# 8 CU AWG minimum w/ 90 degree
Celsius insulation rating required.
5. 12 Volt load circuit Positive
connection terminals. Fuse each load
circuit per NEC Code (Table 310-16)
appropriate to AWG and temperature
rating of conductor used.
12 VDC installation shall comply with
ANSI/RVIA 12 V
GR series terminal bar
recommended.
DC load circuits
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Product shown with Door and dead front plate removed.