Xantrex and cable sizes

[Steve Pfiffner]

115ft to the Xantrex from the batteries sounds like a crazy installation to
me. I spent my life in the
welding supply business and worked on big welders (low voltage, high amp,
DC) and I think you will find
MCM cable hard to find but 4/0 welding cable should be readily available and
off the shelf connectors to attach two cables to one lug are available if
wanted. You can "stack" them to get the capacity you need.
If available always pay more for 34awg stranded cable (instead of standard
30awg), the extra flexibility
can really help.

Steve
Wannabee

[bumpersbird]

Steve,

That was 115' total wire.

It's only 22' feet from inverters to the Batts. Via inside of rail
mounting. It's really a Guestimation, could be a little more or less.

Or four wires of 22' each. 2 Pos. 2Neg. 2 wires per inverter/charger

Not really so far fetched. with the exception that it will not work:{

Like so many things Looked good on paper.

At this point in the installation I've decided to put the new units
in the origonal inverter box inside the engine compartment.

Kurt Horvath
95 Pt-42
10AC



--- In WanderlodgeForum@yahoogroups.com, "Steve Pfiffner"
wrote:
>
> 115ft to the Xantrex from the batteries sounds like a crazy
installation to
> me. I spent my life in the
> welding supply business and worked on big welders (low voltage,
high amp,
> DC) and I think you will find
> MCM cable hard to find but 4/0 welding cable should be readily
available and
> off the shelf connectors to attach two cables to one lug are
available if
> wanted. You can "stack" them to get the capacity you need.
> If available always pay more for 34awg stranded cable (instead of
standard
> 30awg), the extra flexibility
> can really help.
>
> Steve
> Wannabee
>

[Dorn Hetzel]

It's not true that you can't make the wires thick enough or parallel enough of them to work. I don't know how many it would take, but you can find various tools for computing voltage drop in a given wire at a given current in amps. Ask Xantrex how much voltage drop is acceptable and parallel wires until each carries an amount of current that doesn't result in too much voltage drop. Then decide if the bundle of wire is too thick too deal with

On Tue, Jun 10, 2008 at 10:03 AM, bumpersbird <"bumpersbird@yahoo.com"> wrote:

Steve,



That was 115' total wire.



It's only 22' feet from inverters to the Batts. Via inside of rail

mounting. It's really a Guestimation, could be a little more or less.



Or four wires of 22' each. 2 Pos. 2Neg. 2 wires per inverter/charger



Not really so far fetched. with the exception that it will not work:{



Like so many things Looked good on paper.



At this point in the installation I've decided to put the new units

in the origonal inverter box inside the engine compartment.



Kurt Horvath

95 Pt-42

10AC



--- In "WanderlodgeForum%40yahoogroups.com", "Steve Pfiffner"

wrote:

>

> 115ft to the Xantrex from the batteries sounds like a crazy

installation to

> me. I spent my life in the

> welding supply business and worked on big welders (low voltage,

high amp,

> DC) and I think you will find

> MCM cable hard to find but 4/0 welding cable should be readily

available and

> off the shelf connectors to attach two cables to one lug are

available if

> wanted. You can "stack" them to get the capacity you need.

> If available always pay more for 34awg stranded cable (instead of

standard

> 30awg), the extra flexibility

> can really help.

>

> Steve

> Wannabee

>