This post has been edited by RagingCandy: Mar 17 2023, 05:15 AM
RCCB for Water Heater
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 Mar 17 2023, 05:14 AM
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#1
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205 posts Joined: Sep 2014 
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Hi there, my house is a 3 stories terrace with 3 phase electric supply. Developer gave 0.3A RCCB. Is it safe?
This post has been edited by RagingCandy: Mar 17 2023, 05:15 AM |
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Mar 19 2023, 01:52 PM
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#2
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Junior Member
205 posts Joined: Sep 2014
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QUOTE(ceo684 @ Mar 18 2023, 01:23 AM) Completely useless for human life protection. Shitty developer. There is one sub-db which using a 0.1A RCCB. Shall I change the main-DB to 0.1A or lower?Its only good for fire protection. 0.3A RCD has NO PLACE in residential domestic use. For single RCD (whole house RCD) your RCDs shall be a 30mA (0.03A) [one per house] to be code compliant; AND a 10mA (0.01A) [one for each water heater circuit].  |
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Mar 19 2023, 01:53 PM
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#3
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Junior Member
205 posts Joined: Sep 2014
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QUOTE(brutus @ Mar 19 2023, 10:16 AM) For single phase the RCCB is 100mA for power and 30mA for lighting. For water heater it is 10mA. Means using 300mA RCCB is okay? Noob hereIf 3-phase the main RCCB is 300mA (effectively 100mA per single phase) and 100A (around 33mA for single phase). Dont think there is any application for 3-phase heater in a residential home. |
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Mar 19 2023, 09:05 PM
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#4
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Junior Member
205 posts Joined: Sep 2014
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QUOTE(brutus @ Mar 19 2023, 07:54 PM) For a 3-phase supply, yes it is OK. But if you have instant/storage heater, run a different RCCB of 10mA (either 16A or 20A) for best protection. My friend told me the same to ass individual 10mA for water heater.For my own home I have individual RCCB for: 1) Power Circuit (63A 100mA) 2) Lighting Circuit (25A 30mA) 3) Solar Heater Circuit (16A 10mA) Mine is on single phase setup. |
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Mar 19 2023, 09:07 PM
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#5
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205 posts Joined: Sep 2014
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QUOTE(ceo684 @ Mar 19 2023, 06:17 PM) Six times ded. Hexa kill 300mA is only used in commercial/industrial applications. You don’t run huge motors at home Got it. will change it to 100mA then. |
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Mar 22 2023, 02:15 PM
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#6
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205 posts Joined: Sep 2014
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QUOTE(ceo684 @ Mar 20 2023, 12:20 AM) Use 30mA, no developed country use 100mA for homes one. Got it... Will do so....thanks for the guidance... |
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