TechnoRV Blog - Common Questions We Get About Installing a Progressive EMS (HW50C or HW30C)

From the site: TechnoRV Blog - Common Questions We Get About Installing a Progressive EMS (HW50C or HW30C)

Should I install the hardwired Progressive EMS unit before or after the transfer switch?You can install your Progressive EMS either before or after the transfer switch (both methods are described in the manual). The transfer switch is an automatic switch which switches your RV's power between shore-side power and generator power (your generator takes priority). The advantage of installing the unit before your transfer switch is that it can protect both your RV and the switch. If you install it after the switch, you guard against faulty generator power, but leave your switch vulnerable to surges and bad power. Since most generators have their own power monitors, our recommendation is to install it before&nb ...Read more...

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