Have an older generator 18-20 KW, model G0055060, 2007-2008 model with pre-nexus controller, serial 4995710.
Had customer purchase a new transfer switch with load shedding, Generac RXSC200A3, serial number 3002452955
and a new charger, 0G8023, both from Ziller. Customer has gas water heater, gas dryer and gas stove. I am an electrician with 30+
years experience and have been doing work at this residence for over 10 years, so I at least have a clue...
Client replaced his even older generator with this one. Load calc is under 70 amps (electric heat not used I live in Miami)., even though he has a 200 amp service with a 200 amp main breaker service disconnect. The original wiring to generator in 1" pvc only had 4 control wires, so I added 2 more.
There was no battery charger in original generator, he had it fed with an aux charger.
New transfer switch has a T1 wire going to generator, although there is no place to land it at the generator.
Am I better off
1. feeding the new battery charger from T1 in transfer switch and installing in new transfer switch enclosure and feeding
terminal 15B in generator and checking for charging voltage in run condition, ( I do have 0 grnd/common connected )
2. should I install the new charger in the generator assembly itself feeding 120 from T1 and neutral bus and placing 3/8
terminals on new group 26 battery to 12 v charger output , If so, should I disconnect/spare any existing connections
( see 3 )
3. follow no 2 above and find / remove connections to original charger ( if there is one ) that is fed by generator windings
( if there working) that was used to maintain low voltage control power / battery charge while in running mode.
4. something different
Generator does work, auto starts on loss of utility power ( on newly charged battery ), with a load of 42 amps A phase,
32 amps B phase. I added time delay on energize relays to the 2 air conditioners, set at different times and added the best
hard starts that I could find, the adjustable Amrad TES5 Easy-start 5. Makes a HUGE difference in start up surge current.
Appreciate your advice / input on this endeavor
Thanking you in advance, dhsvcs