O
owenskinner
Hi all.
New to this place and have a question about TT distribution.
New 80A TT Supply being put in.
Have to send it 45m to a new Barn Conversion but am unsure best practice.
I am going to put a time delayed 100mA RCD by the Main fuse and then get a consumer unit with 30mA standard type RCD at the Barn Conversion.
Is there any need to protect it for overload and short circuit? As I understand it anything more than 3 Metres from the DNO fuse then it needs to be fused. If so is a High current (80A) MCB sufficient or should an HRC be used?
I was thinking of using a double pole 80A 100mA RCBO, but no one seems to make them (RCBO) with a higher current rating than 40A (Or do they????).
This led me down the path of Wylex 4 Way Metal Clad Panel (Compare Wylex ESM8 Wylex Enclosure Kent Products), 100A 100mA time delayed RCD and then Doube Pole 80A MCB (High Current MCB Double Pole 80A - High Current MCB Double Pole 80 Amp - High Current MCBs Double Pole - High Current MCBs 63 Amp To 125 Amp - Expert Electrical).
Am I being belt and braces or is this the best way to go?
Any neater, solutions more than welcome.
New to this place and have a question about TT distribution.
New 80A TT Supply being put in.
Have to send it 45m to a new Barn Conversion but am unsure best practice.
I am going to put a time delayed 100mA RCD by the Main fuse and then get a consumer unit with 30mA standard type RCD at the Barn Conversion.
Is there any need to protect it for overload and short circuit? As I understand it anything more than 3 Metres from the DNO fuse then it needs to be fused. If so is a High current (80A) MCB sufficient or should an HRC be used?
I was thinking of using a double pole 80A 100mA RCBO, but no one seems to make them (RCBO) with a higher current rating than 40A (Or do they????).
This led me down the path of Wylex 4 Way Metal Clad Panel (Compare Wylex ESM8 Wylex Enclosure Kent Products), 100A 100mA time delayed RCD and then Doube Pole 80A MCB (High Current MCB Double Pole 80A - High Current MCB Double Pole 80 Amp - High Current MCBs Double Pole - High Current MCBs 63 Amp To 125 Amp - Expert Electrical).
Am I being belt and braces or is this the best way to go?
Any neater, solutions more than welcome.