House consumer unit to garage consumer unit

[Jbol1985]

Hi all

I’m planning to install a consumer unit in my garage. The unit will eventually power a 32amp hot tub, 2 double sockets and a small lighting circuit.
The distance from the house CU to garage CU will be about 10m. I plan to run single cables through 20mm steel conduit under my concrete drive once I cut a channel which will exit in the garage.

1. Is it advisable to run singles or T&E through the 20mm conduit?

2. What size cable is preferable (10mm)?

3. What size RCD/ RCBO should I use in the house CU to supple the garage consumer unit (50amp)?

I am an ex electrician who has been a naval engineer for 12 years now so I’m confident I can complete the work myself. Any advise/ comments on my 3 questions would be really helpful. Thanks

 

[Pete999]

I would whack 10mm on a 40a mcb

We are on the 18th edition now.

An this is all very basic.

I suggest employing someone competent to design and install for you. We can't offer step by step guides on here, against forum rules.

Also see post 8

 

[A032701]

you cannot run cat5 and power in the same ducting. the cat 5 insulation would have to be rated to the same voltage as the power. its regs

 

[Jbol1985]

I would whack 10mm on a 40a mcb

Thankyou. That’s what my calculations were saying.

 

[DPG]

What earthing arrangements do you have out of interest?

 

[Jjc]

Hi all

I’m planning to install a consumer unit in my garage. The unit will eventually power a 32amp hot tub, 2 double sockets and a small lighting circuit.
The distance from the house CU to garage CU will be about 10m. I plan to run single cables through 20mm steel conduit under my concrete drive once I cut a channel which will exit in the garage.

1. Is it advisable to run singles or T&E through the 20mm conduit?

2. What size cable is preferable (10mm)?

3. What size RCD/ RCBO should I use in the house CU to supple the garage consumer unit (50amp)?

I am an ex electrician who has been a naval engineer for 12 years now so I’m confident I can complete the work myself. Any advise/ comments on my 3 questions would be really helpful. Thanks

I can't believe a supply through a steel conduit underground. How stupid can you get. What's wrong with a steel wire armoured. ? I despair for the trade.

 

[Jjc]

Hi all

I’m planning to install a consumer unit in my garage. The unit will eventually power a 32amp hot tub, 2 double sockets and a small lighting circuit.
The distance from the house CU to garage CU will be about 10m. I plan to run single cables through 20mm steel conduit under my concrete drive once I cut a channel which will exit in the garage.

1. Is it advisable to run singles or T&E through the 20mm conduit?

2. What size cable is preferable (10mm)?

3. What size RCD/ RCBO should I use in the house CU to supple the garage consumer unit (50amp)?

I am an ex electrician who has been a naval engineer for 12 years now so I’m confident I can complete the work myself. Any advise/ comments on my 3 questions would be really helpful. Thanks

Stick to your day job

 

[Charlie_]

you cannot run cat5 and power in the same ducting. the cat 5 insulation would have to be rated to the same voltage as the power. its regs

Cat 5 swa & mains swa in same duct would be ok?

 

[EbolaSideRoom]

Cat 5 swa & mains swa in same duct would be ok?

Forgive my stupidity please Charlie, but are you agreeing with, or questioning, Alban Moffitt’s assertion that Cat5 run in duct alongside SWA @230V must have insulation rated “to the same as voltage as power”?

 

[Pete999]

Cat 5 swa & mains swa in same duct would be ok?

Reg Number please.

 

[EbolaSideRoom]

Forgive my stupidity please Charlie, but are you agreeing with, or questioning, Alban Moffitt’s assertion that Cat5 run in duct alongside SWA @230V must have insulation rated “to the same as voltage as power”?

I’ve just re-read Charlie’s question and noticed he mentions Cat5 SWA.

 

[Charlie_]

Reg 528.1?

 

[Pete999]

Reg 528.1?

Thanks