RoyB wrote:
I wouldn't like plugging into a hot source as well unless the device getting power is turned OFF.
Even when I just plug in drop cord for a lamp I always have the lamp turned off...
Out of curiosity I just read carefully through my Progressive Industries EMS-HW30C owner's manual and
nowhere does it say anything at all about first turning off source power with a switch or breaker before plugging in the trailer's main service cable. Rather, under Operating Instructions it says -
1) Plug into AC power.
2) Digital display will read 888 for one second and then begin scrolling the voltage, amps, line frequency, and error code, if any. In addition, the time delay light will flash while the EMS is going through it's countdown and will stop when the unit engages.Obviously, with electronics in the box, the EMS must draw
some power when first plugged in but it's so little that Progressive obviously doesn't consider that draw anywhere near large enough to insist that source power first be turned off before connecting to it. As such, I just make sure my converter's main breaker is off before plugging into whatever source I may be using at the time and let the EMS handle it from there ... once it indicates all is OK then I simply turn on the main breaker ... reverse procedure when powering down.
