Recent content by ashtraywasp

There are two MCBs marked as Spare separate to any RCDs but I haven't opened the CU yet to make sure. Yeah the aim is to find a balance. I meant as in what module, not how to get it in the box. I mean getting it approved by an electrician so I can insure the building and comply with the...

Yeah that's true, I'll have a read through Document P and see what we can do ourselves and can't.

I never said I knew more than them, just that from looking at information online I found several ways to do things and needed input on what works best. Just wanted to do it the correct way and save money by doing what we can ourselves.

Ah right, thanks for all the info. We already have an FCU on the bedroom going to the outside, but yeah not gonna be enough with all my PC and equipment plus dryer and heater, even if we don't put the washing machine there. I want the office to be insured so I will need to get it certified...

And am I allowed to add all this myself and then get an electrician to certify it? I understand the difference and advantages between this setup and having one RCBO in the main CU in the house connected to the SWA cable with only MCBs per subcircuit in the sub CU, but as the house is currently...

I saw it on a video about the UK law on modifying existing CUs, quoting Document P. Unsure of how true it is. I'm unsure if there's an unprotected section in the house already, there are gaps between subsections of the main CU, so there mught be space to put an MCB or RCD in there. The...

We do have an existing extension from the bedroom outlets coming out to the garden through an SWA cable already but that would be coupled to the 32A MCB in the CU. There is already two heaters in the bedroom so I don't think that would be enough to supply the entire garden office with outlets...

Yeah you're probably right. And yes I mean that setup, with an RCBO ideally upstream of the MCBs but downstream from the SWA, and within the subunit in the garden office. I have seen that you actually aren't allowed by law to make any changes to the house CU, does that apply to the subunit in...

Well yes but the costs of the materials ballooned a fair bit before we even got to do the electrics, so room has slowly dwindled. Yes that seems to be what I will aim for, ideally we can do the whole installation in the garden and they just connect it all according to law. We can wire up all...

I understand that is the best thing to do, but most people seem to be fine using an RCD with downstream MCBs per subunit, that's why I ask. I also wanted to keep the circuits separated for in case of failure on one it doesn't take the whole thing down. I understand what they do to an extent, I...

Ah right I see, the structure is built out of a wooden frame so no metal involved. The washing machine is not a must for now as we would need to sort the water supply but the dryer will be going in. My partner's dad is coming to help do the electrical installation but he's not an electrician so...

Ah I see I didn't know there were multiple ways to get it certified. The current CU in the house seems to be made up of RCDs with downstream MCBs exclusively, so would it be fine to have a 63A RCD or RCBO added to a separate stream in the main CU, then down a 6 mm² SWA cable down to a subunit...

I am building an outbuilding with a garden office and a shed, and I need to know how to wire it. The consumer unit in the house seems to have RCDs feeding MCBs for each subcircuit. I'm planning to have four subcircuits in the building, one for the outlets in the garden office, one washing...