I'm building a self-contained semi-portable device.
It will perform the following functions:
Provide 300W of true sine 235VAC power
Illuminate a room during a power cut, or provide a work lamp where
there's no mains
Charge USB devices
Provide compressed air, particularly in order to inflate tyres
Provide a 30A 12V DC supply for short periods.
22Ah deep discharge battery
12V 200W compressor
USB psu (from 12VDC)
LED lamp on ball and socket
2A intelligent charger
Fuse block for low current 12V circuits
30A main battery fuse
25A compressor fuse
25A inverter fuse
IEC mains male for charger input
13A socket for inverter output
What to do about grounding?
I plan to connect the following together:
The earth terminal on the IEC
The earth terminal on the 13A socket
The metal cradle that holds the compressor
The earth terminal on the inverter
The metal panel that holds all the controls (this will ground all the
accessible metalwork such as switch bodies and toggles.)
1. Is the above OK?
2. Should I ground the negative side of the 12V circuitry or let it
float? It will not be grounded via the charger or inverter.
- posted 1 month ago