Dimmer rack wiring |
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GAZ.
Old Croc Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
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Posted: 23 July 2017 at 10:42pm |
One of the jobs on my to do list when time and money allow, is to rewire my dimmer rack.
Specifically the mains input. The rack consists of three 6x10amp pulsar dimmers which currently have 63 single ceeforms fitted to each dimmer on cables. I was thinking of having a 63a 3phase plug on a panel on the back of the rack with circuit breakers for each dimmer, and then re wire the dimmers to 3 phase configuration. However sometimes I don't have 3 phase power available and need to run the dimmers from a single phase supply, and I can't think of the best way to cater for both scenarios. I don't ever fully load the dimmers as I don't have enough lights, but I'd rather have it so it could do if needs be. Any suggestions? |
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100% Earth Moving Bass
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imageoven
Old Croc Joined: 28 March 2007 Location: Scotland Status: Offline Points: 2186 |
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If you have three of these dimmers what do you gain by wiring each to run on 3ph?
Could you not just buy or build a 63/3ph - 3 x 63/1ph distro and when you have no 3ph supply just connect however you do now. I would go 63A RCBO per output if you are building / specifying the distro. |
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Keep pushing on, things are gonna get better.
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GAZ.
Old Croc Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
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The idea is to do away with 3 loose coils of cable each with a 63 single plug crammed into the back of the rack, and build a fixed distro panel.
It makes more sense to me to use a single 63/3 connector rather than 3 63/1 connector which would also be expensive. If I were to then have 3 phase coming into the rack I may as well wire the dimmers for 3 phase. The other way I thought of is to leave the dimmers wired for single and wire 1 complete dimmer to each phase, and make up an adapter that has maybe a 63 single plug that connects to just one live and neutral plus earth in a 3phase socket so just one dimmer can be powered for smaller jobs. |
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100% Earth Moving Bass
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James Tengo
Old Croc Joined: 09 May 2008 Location: Brighton Status: Offline Points: 2155 |
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I would wire each pack as three phase, and then just have an input jumper that goes from 63/1 to 63/3 with the phase conductors linked. No repatching, all channels available if you are only running small loads
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GAZ.
Old Croc Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
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I'd thought of that as an option too, probably the best way to do it. Only thing I wondered about was if the terminals inside the 3 phase plug would accept 2 wires to do the links?
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100% Earth Moving Bass
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James Tengo
Old Croc Joined: 09 May 2008 Location: Brighton Status: Offline Points: 2155 |
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Small busbar in a rubber box project box might be the way to go. If you are buying rather than diy see what solutions ses / rubberbox / etc offer. Certainly the single to three phase (all linked) jumpers I have are ferruled cable links. Short jumper, therefore you won't need to use 16mm, 10mm may be suitable, check your manufacturer's cable specs.
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