110 and 12 volt

[ssrjim]

This is one of those things that if you are wrong you burn down your trailer or worse.

[wlooper89]

It is good to know that interference between different voltage wires is possible and I will watch for problems in that area. Something we have done already is install protective devices for the electrical circuits. These include fuses, circuit breakers and GFCI's. A GFCI protects only what is downstream (load side) so for my electrical system I decided it was a good idea to have one right after, or as close as possible to, the shore power inlet.

Bill

[BPFox]

This is one of those things that if you are wrong you burn down your trailer or worse.

The problem with this approach really isn't one of burning a trailer down. The problem is that the alternating current in your 110v ac line could induce a voltage spike in the 12 dc line. In most cases you are going to be ok, such as with 12 lights although you might experience some "flicker". This induced voltage could cause some damage to electronic devices that might be hooked up to 12 dc. Bottom line here is it is just not a good idea.

[wlooper89]

This is a very good point. I will watch for that and if it seems to be a problem when I install the AV system I will know what to do. Many thanks!

Bill

[bobbruso]

This is not a good idea for this reason. You are turning the 12 volt into 120 volts due to capacitance.

Do you maybe mean Inductance?

I don't know how much voltage you can induce under these conditions, but you can induce an AC signal.

Any Electricians care to comment?

[Leon]

Parallel wires exhibit both inductance and capacitance.