It is rated for 16 kW but that may be dielectric breakdown voltage limitation.  
But we know it will at least do that.
So sqrt(16k/50)=17.88 amps

From: Carl Peterson 
Sent: Wednesday, May 30, 2018 12:40 PM
To: [email protected] 
Subject: [AFMUG] Power over LMR400

How many AMPs can I safely push over LMR-400 at 48V?  Around 175'.  I would 
like to power a Netonix IDC switch off of my DC plant using 10-15A but I'm not 
sure what LMR is rated for.

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