leo603•5d ago

I argued with a guy about using shielded cable for a long run, and he was totally right

This installer from a different company told me at a supply house that I should always use shielded 22/4 for runs over 150 feet, especially near fluorescent lights. I thought it was overkill and told him so. Well, I did a job in an old warehouse last month with 200-foot runs and got constant false alarms on the motion sensors. I swapped in the shielded cable he mentioned, and the problem vanished completely. Has anyone else found a specific distance where unshielded cable just starts causing trouble?

2 comments

2 Comments

evan_anderson5d ago

Over 150 feet" seems like a made up rule to me.

rodriguez.cora5d ago

Sounds like a weird thing to get hung up on.