Running a DC4 21'?

[Hop]

I was looking at adding a DC4 into my wet room to run a couple extra heaters and turn a vent fan and possibly another fan over the sump on and off. While reading the manual, it states that the phone cord should be less than 10'. If I needed 21', is that too long?

 

[clp]

The max recommended length is 10 feet, however, I know of several people that have used 50 feet cables without problems. 21' is not recommended but will likely work.

Curt

 

[Hop]

Thanks Curt,

I'll most likely give it a try!

 

[ReefLurker]

Curt,
My experience with other projects has been that typical flat phone line wire is a poor wire to use for communication purposes. If a 2 pair 22 gauge wire with a shield was used, wouldnt that be a safer bet for distances longer then 10'?
Thanks,
Jeff

 

[clp]

For the best noise immunity use twisted pair wire. Pins 1 & 2, and 3 & 4 should be the pairs. Note that as in a standard telephone cord the internal wire connections reversed in the cable (i.e. pin 1 goes to pin 4, pin 2 -> pin 3, pin 3 -> 2, pin 4 -> 1).

Curt