shunt disco very long path... network signal to trigger... or dry contact only?

[wyreman]

I have to run 400' over hill and dale - transitioning levels and materials to get to a very old fpe qmqb 100a 3phase disco
I am looking for alternative methods.

I have been running some very useful network control of HVAC systems lately with network control picking GErr7's
really pretty robust - sometimes there is a little network lag, that's about it


In this case this is an existing structure that has just got a State Inspector call for a disconnect within sight.
The machine has a local shutdown control but no local disconnect of all conductors coming out to the unit.
Like me,,, It's pretty old =0
hihi

That's all fine
Low voltage shunt wire may be what I run.
I'm looking for feedback on alternate ways to intercept those power wires way over there without [my son] crawling 200' in the mud then coming up and running emt on concrete, boring and coring all the way.

Network picking GE RR7 looks appealing.
Forget about using RF!!
I may just use some dry contacts and skinny Cu anyway because I really don't ever want to have that thing shunt when it's not supposed to or,,, the other way around !

thanks Guys

 

[pjholguin]

Hello,

How far apart are those setups? What voltage are they?

Pjholguin

I have to run 400' over hill and dale - transitioning levels and materials to get to a very old fpe qmqb 100a 3phase disco
I am looking for alternative methods.

I have been running some very useful network control of HVAC systems lately with network control picking GErr7's
really pretty robust - sometimes there is a little network lag, that's about it


In this case this is an existing structure that has just got a State Inspector call for a disconnect within sight.
The machine has a local shutdown control but no local disconnect of all conductors coming out to the unit.
Like me,,, It's pretty old =0
hihi

That's all fine
Low voltage shunt wire may be what I run.
I'm looking for feedback on alternate ways to intercept those power wires way over there without [my son] crawling 200' in the mud then coming up and running emt on concrete, boring and coring all the way.

Network picking GE RR7 looks appealing.
Forget about using RF!!
I may just use some dry contacts and skinny Cu anyway because I really don't ever want to have that thing shunt when it's not supposed to or,,, the other way around !

thanks Guys
View attachment 11749

 

[humphs60]

Yikes

Yikes

Hello,

How far apart are those setups? What voltage are they?

Pjholguin

That's exactly what I was wondering! Looks like 36" and a code violation...

 

[wyreman]

Looks like 200 linear feet and almost 400 foot of wire from the point of use to the source.
It's 240v 3phase 100a
Thx


In belief, man can do anything

 

[wyreman]

Update : insp may be ok with a much shorter run from operator to unit in which case the job is straightforward thx !


In belief, man can do anything

 

[wyreman]

That's exactly what I was wondering! Looks like 36" and a code violation...

would that be a code violation ... or a utility engineer question
they were less strict in the 1950's than they are today!

no 4160 no 12k no 480 just 1950FP