Sean_SA
Well-Known Member
- Joined
- May 24, 2020
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Hi guys
I have some questions regarding wiring sizing and grounding my control panel correctly. I'm going to be running a 63A control panel 230v... 2 x 5500w elements running at a time.
The electric brewery recommends 10 gauge wire for wiring the element components(relays, contactors, fuses) for 5500w elements. 10 gauge wire is the equivalent of 6mm² in my country. 6mm² is rated at 41 amps here and 4mm² is rated at 32 amps... so seeing as each element only pulls around 23 amps can I not use 4mm² instead of 6mm²? Each element will have its own 32A contactor, 40A relay and 32A fuse.
Then regarding grounding my control panel below. There is a grounding post in the door (top left of image) but nothing in the main enclosure besides the threaded bolts used to fasten the back plate. How do I then ground the main enclosure? Should I fit a grounding bar or can I simply use the threaded bolts for the backplate as a ground post as well?
Finally, and this is wire size related again. In the diagram below they show 10 gauge (6mm²) grounding wire going to the pump receptacles. In my situation I have chosen to go with 10 amp kettle plug connections for the pumps. Would I really need to use such thick wire for the grounding or could I just use 2.5mm² (14 gauge) wire?
Thanks guys
I have some questions regarding wiring sizing and grounding my control panel correctly. I'm going to be running a 63A control panel 230v... 2 x 5500w elements running at a time.
The electric brewery recommends 10 gauge wire for wiring the element components(relays, contactors, fuses) for 5500w elements. 10 gauge wire is the equivalent of 6mm² in my country. 6mm² is rated at 41 amps here and 4mm² is rated at 32 amps... so seeing as each element only pulls around 23 amps can I not use 4mm² instead of 6mm²? Each element will have its own 32A contactor, 40A relay and 32A fuse.
Then regarding grounding my control panel below. There is a grounding post in the door (top left of image) but nothing in the main enclosure besides the threaded bolts used to fasten the back plate. How do I then ground the main enclosure? Should I fit a grounding bar or can I simply use the threaded bolts for the backplate as a ground post as well?
Finally, and this is wire size related again. In the diagram below they show 10 gauge (6mm²) grounding wire going to the pump receptacles. In my situation I have chosen to go with 10 amp kettle plug connections for the pumps. Would I really need to use such thick wire for the grounding or could I just use 2.5mm² (14 gauge) wire?
Thanks guys