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Can you confirm if the Grey core is unused or concerted to something els? The armour of the SWA doesn't appear to be earthed at the supply end Also was the new RCCB tested or just put in could be that the new unit is actually faulty and not tripping when its meant to also you say its a TT...

If the installation is all in conduit why the twin and earth, surly singles would be much easier to work with?

150 amp Arc welder should run fine on a 13 amp plug for most work, a 16 amp socket B16 breaker is fine for my 180 amp arc welder. some cheep Chinese welders do blow fuses/breakers for fun though The OP seems keen to tell us about this "purpose built" "Professional" work shop but the...

Yeah bit fancy for DIY use though :P

Plasma cutter is the only real tool for cutting out intricate shapes in thin metal sheets, fairly neat cuts that can be filed up in a fraction of the time it would take with a dermal etc

No some people DIY because they enjoy the learning and the sense of achievement and also if they do it themselves they know its done to their own standard. I did the eclectics in my workshop myself using conduit and trunking and I dare say the install is a much higher standard then allot of...

sorry the original thread was locked so I had to reply separately

Sorry if there was a misunderstanding I was trying to say that as the OP calculated 6mm cable would satisfy the load of the new consumer unit however to be on the safe side 16mm tails should be used. This is a DIY forum and if someone askes a question then cherry picks the wrong bits of...

I know that hence the "Probbably" and the fact that I do not advise 6mm cable and instead told him to go with 25 or 16 which will be sufficient in any domestic situation with an 80/100 amp main fuse

He asked a question about cable sizes and I answered it if he uses 16mm there will be no problem it doesn't matter what the earthing system is as to the size of the line and neutral tails yes that is a consideration for other things but as far as the question he asked goes then he now has an...

How is it not useful it gives the OP the information that he wanted about the correct cable to use

Just to provide a useful response to the OP rather then useless drivel, while 6mm would probably satisfy your load and may technically be safe as the upstream OCPD would operate before the cable could become overloaded. Convention and possible a regulation somewhere would say that 16 or 25mm...

interesting point, I'm sure it wont be an issue for a foot or so of cable

Some times dimmer switches have a dimmed output and a on/off output so if the fan is wired separately to the switch or a new wire can be pulled in then the fan could still be on the same switch but not effected by the dimmer

Better give the DNO a call them I'm about to do some vacuuming and haven't notified that that I will be using a motor over 1kw The clause in the contract talks about fixed loads A 3hp compressor should not cause any problems on the network I can use one in my garage that is fed via a 4mm...

Surely the obvious way to bring it up to current regs would be to leave the main switch be and simply add a second RCD and configure the board correctly, I cant see a professional electrician leaving the board like this, the main point I was trying to make was that this setup screams DIY job

Is it me or is there no main switch on the CU just two RCDs I know there is a main isolator but that is shoddy work at the best

In that case at the top of the top section there will be two little wheels that follow a different track to the others and provide the downward force on the door seel strip when closed, simply loosen the adjusters off close the door then retighten them, it doesn't take much to force the motor to...

Of course everyone who buys these sorts of compressors has to seek explicit permission from the DNO to use there consumer device don't then :roll: http://www.machinemart.co.uk/shop/product/details/airmaster-14150-3hp-air-compressor...

Is this an up and over door or a sectional, If its a sectional door then the top guide wheels may need adjusting slightly.