New build - DNO fuse size

[ETradesmen]

Good morning one and all,

I have a new build coming up (Hertfordshire) and was wondering what size fuse the supplier install now?

The reason why I’m asking is because a sub main is required due to the client not wanting the CU near the meter.

thanks,

 

[ChrisElectrical88]

90% I see are 80A, however give them a call to be certain.

 

[buzzlightyear]

You need to speak the local DNo, plus it depends on the loading.

 

[Ian1981]

Our sites are fitted with 100 amp fuses

 

[mattg4321]

Usually 100A here, but it depends on what has been requested and whether DNO has the capacity in the local area to supply it.

 

[Rockingit]

80A seems to be pretty standard, I've even seen some 60A's from new. But ask yourself when the install is going to be pulling 23kW..........

 

[Vortigern]

Around here (south west) there is a presumptive 60A as standard. I believe you have to request for anything higher in advance.

 

[Pete999]

Good morning one and all,

I have a new build coming up (Hertfordshire) and was wondering what size fuse the supplier install now?

The reason why I’m asking is because a sub main is required due to the client not wanting the CU near the meter.

thanks,

Ask the D/N/O.

 

[ETradesmen]

Thank you for all the replies.

It’s a 3 bedroom small end of terraced house.

I suppose regardless of 100a or 80a I’ll still need to wrestle a 25mm 3 core inside the meter cupboard.

60a would mean I could get away with a 16mm.

I’ll give them a buzz.

thanks

 

[Pete999]

Thank you for all the replies.

It’s a 3 bedroom small end of terraced house.

I suppose regardless of 100a or 80a I’ll still need to wrestle a 25mm 3 core inside the meter cupboard.

60a would mean I could get away with a 16mm.

I’ll give them a buzz.
.
thanks

You're welcome, Mate good luck

 

[Rockingit]

Thank you for all the replies.

It’s a 3 bedroom small end of terraced house.

I suppose regardless of 100a or 80a I’ll still need to wrestle a 25mm 3 core inside the meter cupboard.

60a would mean I could get away with a 16mm.

I’ll give them a buzz.

thanks

80A = 16mm..... unless there's more to the story?

 

[davesparks]

Thank you for all the replies.

It’s a 3 bedroom small end of terraced house.

I suppose regardless of 100a or 80a I’ll still need to wrestle a 25mm 3 core inside the meter cupboard.

60a would mean I could get away with a 16mm.

I’ll give them a buzz.

thanks

Why do you need to wrestle with 25mm 3 core?

What size submain are you installing? The size of the DNO's fuse does not dictate what size fuse you put in your switch fuse.