GFI Protection on 480V, 1ph, 5kW space heater
GFI Protection on 480V, 1ph, 5kW space heater
(OP)
I am installing a 480V, single phase, 5kW space heater in a "hot box" around an above ground backflow. Do I need to feed this heater with a 2 pole, 480V, GFI breaker?





RE: GFI Protection on 480V, 1ph, 5kW space heater
RE: GFI Protection on 480V, 1ph, 5kW space heater
But I would use 30 mA. If using any at all.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: GFI Protection on 480V, 1ph, 5kW space heater
RE: GFI Protection on 480V, 1ph, 5kW space heater
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Sometimes I only open my mouth to swap feet...
RE: GFI Protection on 480V, 1ph, 5kW space heater
I believe 300mA GFP are available. It all depends on normal "leakage" or capacitive current of the equipment and circuit. You want to beat that.
RE: GFI Protection on 480V, 1ph, 5kW space heater
We have a big problem with 30 mA RCDs (as we call them) and nuisance tripping. Especially when there are VFDs involved. It may be because we have a higher voltage (230 V phase-ground). I think that our RCDs are specified somewhat like Must Trip > 30 mA and Must Not Trip < 18 mA.
I have been "saved" by 30 mA devices several times - I trust them too much.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: GFI Protection on 480V, 1ph, 5kW space heater
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...