Recent content by Risteard

I searched for the "thought" post you have alluded to, but failed to locate it.

The way I read it is that he stated that it was the suspicion (of many), and didn't elucidate his own view on that.

He means the Neutral conductor. There isn't any such thing as an "Rn conductor". Rn relates to the resistance of the Neutral conductor, and is not a name for the conductor itself. Sloppy incorrect and meaningless use of terminology by your Electrician.

Three-way switching is a made-up and incorrect term. It's two-way and intermediate switching - an intermediate switch still only switches in two ways.

It's not that uncommon for these sorts of appliances to have dedicated circuits.

Sorry, yes, the old price. Although I'd be looking more what you were quoted than your imagined price.

Not sure how that contractor could operate a profitable business at those sorts of prices...

Those sorts of appliances should each be on a single socket-outlet. A double socket-outlet is not rated for that. (They are only rated for 20A across both outlets, tested with a slight overload (14A) on one side and 6A on the other.) In this sense the triple socket-outlet is probably less risky...

It definitely won't be SWA.

In his defence I would suggest that it's accepted good practice to Earth unused cores, however it's certainly not a requirement in BS7671 terms.

EVSEs generally shouldn't be supplied from a 32A protective device. A 40A is far more appropriate as you do not want a device operating at its full rated capacity for many hours at a time.

RCBOs aren't RCCBs. RCD is the umbrella term, but an RCCB does not have overcurrent protection so can be used to distinguish between RCCBs and RCBOs. That's why I tend to use the term RCCB to refer to those devices.

Many RCBOs aren't. An RCBO is an RCD as per the definitions.

Also correct, or four pole for a three-phase EVSE installation.

You're absolutely correct - it must be a dedicated RCD for each EVSE.