Fitting a new consumer unit

[sjl468]

Hi,
I’m a relatively "new electrician" who has spent 23 years as an engineer in the Royal Navy and I'm now embarking on a career as an electrician. I've passed 2381 and 2391 and have some experience in domestic electrics. What I need is a few tips as I learn more please from all of you experienced ones out there.
First bit of help concerns fitting a new consumer unit. I know how they work (rcd/rcbo's etc) but can someone tell me the "safest" way of extending the wires of existing circuits if the wires do not reach the newly positioned CU. I thought of the correct rating of "choc block".???

 

[JohnD]

butt-through insulated crimps, with heat-shrink. You can get crimps with their own heat-shrink incorporated, a bit more expensive but I think a briliant idea.

Oversleeve with heat-shrink or something else eqiovalent to the cable sheath. Stagger the crimps for neatness. Use a ratchet crimper. Sometime you can hide the extension joints behind a back-board, if you like that sort of thing. Or you can put then in mini-trunking (not bunched).

Sleeved crimps look rather unsightly to my eye if they are in plain view. Like varicose veins. If they are inside the CU enclosure they are quite bulky.

 

[Pensdown]

butt-through insulated crimps, with heat-shrink.

<<<spits out a lump of cheese

Options for a "proper job"

1. Terminal box with din rail connectors
2. Through crimps in an enclosure
3. Fixed choc strip in an enclosure









999. Through crimps in heat shrink

 

[JohnD]

what number are sleeved crimps in mini-trunking?

 

[Pensdown]

Sorry John, I only read the first line before I started choking

2A?

 

[ban-all-sheds]

#1 is good - easy access for testing as well.