Hello - hope someone can advise please.
I have a recently purchased second hand Myford lathe which has a 3-phase inverter (Siemens Micromaster 410)
Lathe all works fine but regularly trips my RCCB 80A 30mA breaker taking out half of the board - usually when first powering on. The inverter is...
Hi I have a 3phase shop in a high humidity area in (Hawaii) and I'm having some issues with low voltage on the single phase outlets on the 120v side.
Every once in a while the electric goes out on the regular outlets but the three phase works perfectly fine.
Usually at night all the outlets...
Hi there, I've got a 3 phase compressor and a small 8500W single and 3 phase generator. My compressor has a large 32amp plug on it but my generator only has a 16amp socket so my question being can I swap the 32amp plug to a 16amp plug?
Sorry if this is a daft question.
Thanks guys 🙂
It's coming out anyway so it's a rhetorical question.
What do you you all think of this?
Bits of wire used to bridge the bus bars and don't single phase consumer units need a linked switched line and neutral?
Hi there
I have not done a huge amount of work on 3phase.
I am installing a Induction Hob as part of a new Kitchen refurb- to be specific the hob is NEFF T59FSRX2.
It is a 11,100W with the ability to power limit and support single or three phase connection.
NEFF have not provided great...
A customer recently lost power to part of their electrical installation. On arrival I found all IEC 60947-3 devices had supposedly tripped - including the main switch rated at In 400A. Excluding the possibility of someone tapering with the board, can anyone think of any other reason why this...
I was speaking to an Electrician a few years back as he was balancing out a 3 phase supply.
To me it sounded like he was trying to get close to each phase supplying roughly the same Kw's to both of the lines/live/hot.
Is this correct, if so how close do you have to be in this balancing stage...
Hi! Currently doing a job that they have decided against getting gas meters and going all electric.
Electric boiler 9.5kw
2x shower 9.5kw
Hob say 6.5kw
2x 32a ringmains
2x 6a lighting circuits
I understand they have had a 13Kva supply installed.
Obviously this will not be enough to run all...
Colleagues - may have some help in finding out how old or when they stopped selling this item piece of switchgear please? Is it BILL as I recall it is without revisiting the site?
And from this picture alone what do you think of its material state and life remaining?
I have other pictures but...
Hi all,
I recently bought a CNC router and dust collector and need to connect it to my 3x380v+N power source.
I want the CNC router connected to the under/over voltage protection and the motor also connected to the overload protection.
Can someone please check if I connect the machines as in my...
Hi Guys
Got a new build house coming up, has 3phase ASHP specified.
Company commissioning the unit have specified to supplied via an RCBO, type C or D.
Done quick google and struggling to find any reputable make of 16a 30mA RCBO/ TP that will do the job..... anyone help me on this please ...
I'm a mechanical manager with some electrical background (2330 L2 from college, 18th ed, 2392).
About to be an M+E manager so need to brush up on areas I'm unfamiliar with - 3 phase wiring and testing is the big one.
Is there anyone in London area with access to a (used) 3phase board who can...
Hello all, looking for a bit of advice not been asked to fill in a new power supply for dno for a commercial premesis before. Do i put 70kva for a 3 phase supply that equates to 100A 3 phase head?
Usually on single phase i put 18.4kva for 80 supply and they always provide 100A head.
Thanks in...
Evening all, got this rating plate on a portable feed augar motor, it's currently wired in some seriously past it SY cable, the farmer wants to renew it , I've suggested H07RNF as best choice, but I'm not clued up on reading motor plates to size it, I see 29 on the plate, and assume it to be...
Hi All
So i have just got a job of doing a rewire on a small flat, which includes change of DB etc... Currently this is fed from a 3 phase DB in a commercial premises below. The feed cable is over 25m long (16mm T&E). the client has asked for a sub main tennant meter to be installed. At the...
I have a metal lathe, 1.5hp, 3phase, 575v motor. Can I just replace the motor with a single phase,220v motor? Would all the lathe wiring , switches, relays work? IF so, what HP motor should I buy? Thanks,
I have a 3 phase cable with overall and individual screens.
The cable goes from a switchboard to a transformer.
How do I connect the overall screen and the individual screens?
Connect on swbd side and at transformer loose?
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