Converter (Battery charger and 12 volt power supply)
Your converter is a 55 amp. (Medium size) 15 amps to 90 amps; with a rapid charge capability.
It comes with a male plastic phone type jack taped to the unit that, when inserted, will provide a temporary rapid charge for your 12 volt storage system. (single, or multiple 12 volt batteries, or an even number of Golf Cart batteries . Normal 13.6, to 14.2 fast charge.
This is a temporary mode of operation, as it would boil, or overcharge if left in. Useful for a quick charge need.
It’s maximum amp draw is 15 amps. (A/C)
If you blow fuses, look for reverse polarity, these fuses are designed for that.
Your converter has built in protection from:
Voltage spikes
Low line voltage (power from the main, coming in to the RV) Sometimes referred to as ‘Brown out’
Your converter can be used with, OR without a battery connected with no adverse effects.
All and all a pretty sophisticated piece of equipment.
Read up on the IQ Smart charger option;
http://www.iotaengineering.com/iq.htm
Ozz