Thread: Wiring 1000w inverter to trailer harness

Originally Posted by Gav 110

Maybe an Anderson plug near the battery, same on the inverter and a short extension cord (240v variety) to plug into the said item

Yep, exactly, perfect. Run high voltage for longer distances to reduce amperage and thus losses.

Might I suggest a simpler option -

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SWMBO uses it at home now too, due to speed and convenience, with the coffee system sitting mostly unused.

Hi
to be safe if you install a1Kw inverter minimum cable capicity should be 100 A with a 100A fuse . eventhough you are "only using 500w unit " now one day you will say "hey I have 1 Kw available i will use it "
cable size is dependant on
1 max current
2 how far from the battery it is for minimum volltage drop .
go on the internet there is plenty of charts available to advise cable size BUT make sure youn are looking at low voltage dc charts
Agree with keep as close to battery as possible . I run a 1Kw inverter in my camper for a CPAP machine only 1 m from battery . Never had a problem .
discodude94
Assos dip elec eng

There is a big voltage drop on 12v along that length of wire. Best bet is inverter close to battery and use a 240v extension cord. Much less power loss and very simple too :-)

Originally Posted by discodude94

Hi
to be safe if you install a1Kw inverter minimum cable capicity should be 100 A with a 100A fuse . eventhough you are "only using 500w unit " now one day you will say "hey I have 1 Kw available i will use it "
cable size is dependant on
1 max current
2 how far from the battery it is for minimum volltage drop .
go on the internet there is plenty of charts available to advise cable size BUT make sure youn are looking at low voltage dc charts
Agree with keep as close to battery as possible . I run a 1Kw inverter in my camper for a CPAP machine only 1 m from battery . Never had a problem .
discodude94
Assos dip elec eng

Don't forget the fuse, as close to the battery as possible. Also remember that even in standby mode your inverter will probably have a 1 or 2 amp parasitic current draw.
And like previously mentioned use the body Earth not the battery terminal

When hooking up an inverter to a 2nd battery, what is the reasoning behind connecting to a chassis earth rather than directly to the battery negative terminal?