Forum Discussion
MEXICOWANDERER
Sep 23, 2016Explorer
GdeTrailer,
Boy! I'll say! Trace boasted their inverters "Would easily operate at X3 rated nameplate" for a half hour, at 25c. I had (and sold) a 12-volt Trace 812 that tolerated a 3,000 watt motor start up. My dumb - the poor inverter survived innumerable clashes trying to fight 120 vac shore power (and auto-protected shutdown). Trace inverters were heavy. Even though they were pseudo sine wave.
Not any more. Those cheap featherweights on the market can barely meet their design wattage spec. I blew my true sine wave Samlex immediately off-line with a 2X load attempt.
Care must be taken matching an inverter to an inductive load start up (inrush). Pseudo sine wave inverters require more percentage safety startup leeway than do true sine wave inverters.
There's no benefit in spending any money to "try and save money" only to guarantee the purchase either fails to do the job or catches fire.
1. Find out the appliance run watt rating
2. Find out what type of motor is used
3. GOOGLE motor-type start up current inrush. It will be a percentage
4. This is valid only for dedicated inverter / motor connections
Boy! I'll say! Trace boasted their inverters "Would easily operate at X3 rated nameplate" for a half hour, at 25c. I had (and sold) a 12-volt Trace 812 that tolerated a 3,000 watt motor start up. My dumb - the poor inverter survived innumerable clashes trying to fight 120 vac shore power (and auto-protected shutdown). Trace inverters were heavy. Even though they were pseudo sine wave.
Not any more. Those cheap featherweights on the market can barely meet their design wattage spec. I blew my true sine wave Samlex immediately off-line with a 2X load attempt.
Care must be taken matching an inverter to an inductive load start up (inrush). Pseudo sine wave inverters require more percentage safety startup leeway than do true sine wave inverters.
There's no benefit in spending any money to "try and save money" only to guarantee the purchase either fails to do the job or catches fire.
1. Find out the appliance run watt rating
2. Find out what type of motor is used
3. GOOGLE motor-type start up current inrush. It will be a percentage
4. This is valid only for dedicated inverter / motor connections
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