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Hi All

I’m in need of a bit of advice. I’ve recently started a new job and have been given the task of relocating some machinery. There are 3 separate machines on the line with 1 feed from a bus bar with a 35mm cable protected by 125a fuses.

What I’m planning is to take the feed to the first machine through a main switch, then to a terminal block and off to 3 separate 80a fus
 
Hi All

I’m in need of a bit of advice. I’ve recently started a new job and have been given the task of relocating some machinery. There are 3 separate machines on the line with 1 feed from a bus bar with a 35mm cable protected by 125a fuses.

What I’m planning is to take the feed to the first machine through a main switch, then to a terminal block and off to 3 separate 80a fus

I’m not sure why my whole post didn’t come through 🤔 anyhow…

3 separate 80a fuse disconnects, then off to the the machines. According to the cable tables, 16mm cable is enough, but I’m sure I’ve seen somewhere that the cables are de-rated for inside panels and I would actually need 25mm.

I’ve worked in maintenance for years, but not much installation and design experience, so thought it best to ask you guys first!
 
Need more info such as length of circuit and the anticipated loads.
 

Reply to Panel wiring and cable size question in the Industrial Electrician Talk area at ElectriciansForums.net

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