Arc Fault tripping

[Therealcrt]

Client says her bedroom circuit trips every 5 ish days.. I took a look in the panel and took the hot and neutral off the breaker. I did continuity test between all conductors and got nothing. I did an ohms test between hot and neutral and it was showing 178ohms of resistance.. I know a 500ft spool of #12 wire has 0.5 ohms of resistance so why did this hot/neutral have 178 ohms of resistance? Could there be a small pinch or knick in the wire somewhere within that Romex causing a very very slow trip since it’s on an arc fault breaker? The panel is roughly 100-120 feet from the bedroom, it’s in an assisted living facility

 

[curt swartz]

Are there any loads connected to the circuit? Including GFCI's, Dimmers, etc.

 

[Therealcrt]

Are there any loads connected to the circuit? Including GFCI's, Dimmers, etc.

An alarm clock, bedroom lamp, small little speaker that’s it

 

[Little Bill]

An alarm clock, bedroom lamp, small little speaker that’s it

You're reading through a load. You should take all loads off the circuit before taking a resistance reading.

 

[Therealcrt]

You're reading through a load. You should take all loads off the circuit before taking a resistance reading.

Thank you

 

[ptonsparky]

Why do you think that it's an Arc Fault issue?
What is the brand and catalog #, how old, does it have diagnostic features?