7
OPM-142/D
ELECTRICAL CONNECTIONS
CAUTION:
Only qualified electricians should install electric wiring.
Wiring must conform to all applicable national, state,
and local codes. (Reference: National Fire Protection
Association Manual No. 70, National Electrical Code.)
DANGER: PERSONAL INJURY
If the generator is to be used as a standby power source, a
special disconnect switch must be installed to separate the
generator and the commercial power lines. The disconnect
must isolate the generator from the commercial power
lines and the load when the generator is on standby, and
must isolate the commercial power lines from the load and
generator when the generator is supplying power.
A properly rated and installed double throw manual power
isolation transfer switch must be used with a standby
generator. The transfer switch isolates the load from the
power line and allows you to safely operate your loads
without endangering the power line repair crew.
The load, connected to the normal terminals of the transfer
switch, is energized by the normal power line when the
switch is in the normal position. The generator, connected
to the emergency terminals of the switch, furnishes power
when the switch is in the emergency mode position.
There are two ways to install a manual transfer switch. The
first is to install the switch between the watt-hour meter
and the normal distribution panel. As with any system you
must install an entrance rated breaker before the manual
transfer switch. The manual transfer switch must in all cases
be equal to or greater than the rating of the entrance rated
breaker.
The second way to install the system is to purchase and
install an emergency distribution panel and move the
circuits you wish to back up to the new distribution panel.
In this case the manual transfer switch only has to be
sized to the amperage of the circuit breaker in the main
distribution panel that is feeding it.
Before deciding which system to install, first determine
which loads you can safely run on your PTO generator and
the cost of buying a large manual transfer switch versus
the cost of a smaller switch and the additional distribution
panel.
The only assembly work required after unpacking the
generator is to assemble the load disconnect plug, which
is contained in a bag in the sub-pack carton packed in the
generator crate.
The bag contains an instruction sheet, 2 plug bodies, four
contacts, a handle and the hardware to assemble the
disconnect plug. You will need to purchase the appropriate
length of fine stranded copper wire for your application in
order to complete the assembly of the disconnect plug.
VOLTAGE
RECOMMENDED
WIRE
CONTACTS
INCLUDED
120/240 1-PH
2/0
1/0 & 1/0 to #1
WARNING: EQUIPMENT DAMAGE
Never use acid core solder. When soldering insure no
excess solder runs down on the contact surface - Solder
on the contact surface will not allow the contacts to mate
properly causing them to burn up.
Each wire should be stripped back 7/8 of an inch and
inserted into one of the contacts in the plug kit. You will
then either need to solder them together using a good
grade of resin core solder or they can be crimped with an
appropriate compression crimper or both.
Approved crimping tools are:
1. Anderson Power Products
2. ETC Model HHS hydraulic crimper
3. ITT Blackburn No. 1640
4. Thomas & Betts #TBM5
To complete the assembly of the disconnect plug refer to
the instruction sheet in the plug kit.
WARNING: ELECTRICAL SHOCK
During the next step, the load disconnect plug should
not be plugged into its receptacle. Also, make sure that
the equipment to which the plug leads (cables) are being
connected is not energized (live).
Strip the insulation off of the free end of each of the plug
leads (cables) and connect them to the load transfer switch
or directly to the load.
