Best option is to operate the pull switch only when the shower is switched off at the shower itself. This prevents arcing in the contacts of the pull switch and thus extending its life time. Arcing wears the contacts and worn contacts can become hot when passing current and that is the most common reason for failaure of shower pull switches.
Turning the pull switch off after the shower is turned off does remove power from the shower so it is marginally safer to do so.
the showers always turned off using the off button on the shower. but just wanted to know if the pull switch is safe to leave on all the time, someone told me to just leave it on but don't want the switch to burn out, if that would even happen.
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