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Setting overloads for three phase motors
Hi just a question on setting the thermal overloads of a three phase motor. I have heard a few electricians state a few things regarding what it should be set at 1. Get operational current of motor and set it just above that reading 2. Set it at full load current of the motor 3.set it at 110% of...- Buzz1980
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- motors phase setting three three phase
- Replies: 18
- Forum: UK Electrical Forum
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Smoke alarm problem - AICO Ei141
Hi, Our house has three of these alarms, interlinked so if one goes off then it sets the others off a couple of seconds later. For reasons I needn't go into I had one of them disconnected last night by removing the main unit from the base plate, and removing its battery. Also the lighting...- aesmith
- Thread
- aico alarm battery problem removing smoke smoke alarm three without
- Replies: 4
- Forum: DIY Electrical Advice
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three phase extension lead
Guys What cable would you guys use to make up a three phase extension lead for use with a jet washer? I was thinking SY cable but I can't earth the sheath in commando sockets. Someone suggested a heavy duty rubber type flex. What do you think? The supply would be 32a per phase.- markythesparky
- Thread
- extension extension lead phase three three phase
- Replies: 20
- Forum: UK Electrical Forum
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Three phase cable size
Can anyone tl ell me how to work out the size of an existing supply cable. It is a three phase supply into 200A fuses. The cable is buried in concrete ground and so I cannot see any markings on it. I've had a look at the cables upstream of the fuses and they look to be at least twice as larg as...- paulcopeman
- Thread
- cable cable size phase size three three phase
- Replies: 27
- Forum: UK Electrical Forum
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Three core
I know this has been touched upon but in domestic settings, apart from 2 gang switches - 3 core is most used for:strappers, timed fans, heat/smoke alarms. I'm not asking is it rough (i know it is) i'm asking is it SAFE and to regs. In the case of strappers: could you brown sleeve the cpc of...- Eddiesparks
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- three
- Replies: 38
- Forum: UK Electrical Forum
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three phase motor insulation resistance test
Hi all wondering if you could help clear something up for me. I was recently working on a three phase motor rated for 480volts a.c and wired in delta. So before powering up I done my dead testing and done my insulation resistance test at 500volts d.c which I thought was correct but read up on it...- Buzz1980
- Thread
- insulation insulation resistance insulation resistance test motor phase resistance test three three phase
- Replies: 14
- Forum: UK Electrical Forum
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New three phase motor winding burn out
We have been involved in the installation of a dust extraction system which is powered by a fairly large 3 phase motor (18A). The motor was pre-wire to a control box on the side of the extraction housing and the star/delta starter was also pre-wired. The only wiring that was required was the 2...- brizospark
- Thread
- checked drawing motor new out phase starter three three phase wind
- Replies: 44
- Forum: UK Electrical Forum
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Three phase solar
Starting a solar three phase project, how do you connect the generation meter from 8 three phase inverters, or will each inverter have it's own g meter? Appreciate a response- Lcfcbunny10
- Thread
- inverters meter phase protection solar three three phase
- Replies: 6
- Forum: Solar PV Forum | Solar Panels Forum
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