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Installation
3–10
445-0145-01-01
Calculating Fuse/Circuit Breaker Size
Because your batteries can provide thousands of amps of short-circuit
current, you need fuses or circuit breakers that can safely withstand the
short-circuit current that the batteries can produce.
To select the correct fuse type and size:
1.
Determine the total short-circuit current rating for your batteries. For
example:
• If you are using one battery to power your inverter and its short-
circuit current rating is 500 amps, the total short-circuit current
rating is 500 amps.
• If you are powering your inverter with two 12 volt batteries
connected in parallel, and each battery has a short-circuit current
rating of 500 amps, the total short-circuit current rating is 1000
amps.
• If you are powering your inverter with two 6 volt batteries
connected in series, and each battery has a short-circuit current
rating of 500 amps, the total short-circuit current rating is 500
amps.
2.
Once you have determined the total short-circuit current rating of
your batteries, pick the fuse/circuit breaker’s interrupt capacity based
on the short-circuit current calculated in step 1.
3.
Pick the fuse/circuit breaker’s current rating based on the product
used:
•
XPower 1200 Plus
: 150 Adc
•
XPower 1750 Plus
: 250 Adc
Fuses can be bought at any marine supply store, RV supply store, or
electrical products store.
Note
: For batteries connected in parallel, the total short-circuit current
rating is the sum of the short-circuit current ratings of all of the batteries
connected in parallel. For batteries connected in series, the total short-
circuit current rating is equal to the short-circuit rating of a single
battery.
XPower 1200 Plus 1750 Plus.book Page 10 Friday, October 21, 2005 4:19 PM
Summary of Contents for XPower 1000 Plus
Page 1: ...XPower Inverter 1000 Plus and 1750 Plus Owner s Guide...
Page 4: ...iv...
Page 12: ...xii...
Page 16: ...1 4...
Page 60: ...B 10...
Page 64: ...C 4...