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4.6 ELECTRICAL LOAD
4.6.1 WATTAGE AND LOAD
Your Wallenstein generator has two wattage
(power) specifications that need to be considered
when you are connecting loads: continuous watts
and maximum watts.
At the same time there are two different types of
loads, resistive and reactive.
REACTIVE LOAD
Generally a tool or appliance that contains an
electric motor
is a reactive load, Reactive loads
have two modes of operation: startup and running.
An electric motor
starting watts
(reactive load)
could possibly require up to 3 x its
running watts
at start up.
In other words wattage will spike at starting and
level off to running (continuous) wattage when it is
operating normally. (See wattage chart)
RESISTIVE LOAD
A resistive load is
lighting, hot plate, TV,
etc,
Resistive loads generally will not spike and starting
wattage is the same as running wattage.
(See
wattage chart)
CONTINUOUS WATTAGE
Continuous wattage is the wattage range that can be
safely generated by the alternator for an extended
period.
MAXIMUM WATTAGE
Maximum wattage is the wattage range the
generator can produce but for only short periods
of time (electric motor starting). Drawing maximum
wattage for extended periods will cause the breaker
to trip.
4.6.2 CALCULATING LOAD
When calculating load in watts, you will need to
determine two wattage values:
• running w starting wattage:
determine
the starting wattage of your reactive loads and
add them to the running wattage of your resistive
loads.
• running wattage only:
add up the running
wattage of both the resistive and reactive loads.
load calculation ex-
ample
Wattage Combination
Status
total starting w total running wattage is
within the continuous rating
OK
total starting wattage is over the continuous
rating but below maximum, and total running
wattage is within continuous rating
OK
total starting wattage is over the continuous &
maximum rating, and total running wattage is
within continuous rating
Stop
total starting wattage is over the continuous &
maximum rating, and total running wattage is
over continuous rating
Stop
both the total starting wattage and total running
wattage are over the continuous rating but
below maximum
Stop
Qty
Load
Starting
Watts
Running
Watts
1
Refrigerator/Freezer
1200
192
1
Furnace Fan (1/8 hp)
500
300
6
Lighting (40w ea)
240
240
Totals
1940
732
Load Calculation Example
Generator Spec: 2000 maximum watt, 1500 continuous watt
The example totals match the second combination
on the chart, and shows that the run status is OK.
Summary of Contents for WHS12000
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