Another Inverter Question

what would be the ideal size wire (to avoid to much volt drop) should I use from the battery in the Van to the Inverter which is situated about 8ft away
Back Expand Un-Read 0 Moderator

Reply By: _gmd_pps - Friday, Feb 27, 2009 at 00:20

Friday, Feb 27, 2009 at 00:20
that depends on the current you intend to run over the cable.
I use 32 square mm for my 1800W inverter drawing 180amp peak.
for a 500W I would use 16sqmm.
good luck
gmd
AnswerID: 351260

Follow Up By: Member - Kiwi Kia - Friday, Feb 27, 2009 at 09:56

Friday, Feb 27, 2009 at 09:56
32 square mm ! Are you sure :-))

0
FollowupID: 619566

Follow Up By: _gmd_pps - Friday, Feb 27, 2009 at 11:37

Friday, Feb 27, 2009 at 11:37
yes I am sure, with a 350amp
have fun
gmd
0
FollowupID: 619583

Follow Up By: cobber - Friday, Feb 27, 2009 at 14:21

Friday, Feb 27, 2009 at 14:21
Sorry I should have said its a 300w Inverter
0
FollowupID: 619615

Reply By: Nomadic Navara - Friday, Feb 27, 2009 at 15:13

Friday, Feb 27, 2009 at 15:13
You can easily work it out yourself. Look under the heading "How to Choose the Right Cable" in this link - just remember, if you are using a wire earth and not a chassis earth then double your length for calculating.

PeterD
PeterD
Retired radio and electronics technician

Lifetime Member
My Profile  Send Message

AnswerID: 351339

Reply By: kcandco - Friday, Feb 27, 2009 at 21:11

Friday, Feb 27, 2009 at 21:11
Hi Cobber

Assuming a total distance of 4.8 metres (including earth return) drawing 30 amps and using 4mm diameter wire (12.57 square mm cross section) would yield you a voltage drop of approximately 0.19 volts. Dont forget to use a 50 amp andersen plug or similar for your connection.

cheers Kc
AnswerID: 351413

Reply By: RV Powerstream P/L - Saturday, Feb 28, 2009 at 12:03

Saturday, Feb 28, 2009 at 12:03
Hi KC
Goodto compare statistics.
I did 8FT at 28A with 8GGE and came up with 0.289V drop which is just acceptable assuming a high frequency inverter.
The 8Ft although single length allows double run calcs.
Ian
AnswerID: 351479

Sponsored Links

Popular Products (14)