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Deleted member 155212
Hi, I have received conflicting advice about Main Isolator Switches and would appreciate forum member's help to plan a way ahead. Looking to the future I might need a 7.4kW/32A charging point and the garage isolator is only 60A.
1. Recently, during a kitchen refurb, double pole Mains Isolators were fitted in the Meter Enclosure - image 1. 25mm2 'tails' were fitted because the incoming power was upgraded to 100A.
2. Inside the garage, opposite the Meter Enclosure, the new 'tails' are connected to an old MEM Isolator Switch - image 2. That Isolator switch has a ceramic re-wirable fuse and that fuse is only rated at 60A.
3. The armoured cable from that MEM Isolator Switch goes to a new, metal, split load Consumer Unit inside the house - image 3. Naturally that Consumer Unit has another Mains Isolator Switch.
The oldest part of the installation is the MEM Isolator Switch. I am having trouble finding a ceramic MEM re-wirable 100A fuse and am not sure that is the best solution anyway. So my questions are:
1. Do I actually need the MEM Isolator Switch in the garage if the Meter Enclosure and the Consumer Unit both have isolator switches?
2. Could that MEM Isolator Switch just be removed OR should it simply be replaced with a 100A cartridge type fuse OR a suitable 100A breaker?
3. "One day" I will need to fit a Charging Unit for a car and the location of the MEM Isolator Switch would be a good point to take a cable through the garage wall to the outside for that charging point. So what would that arrangement look like? Would it be a very small 'Consumer Type' unit with an isolator switch plus a 32A 'take off' connection for the charging point?
4. OR should the power for that charging point come from the new 'Consumer Unit' inside the house (i.e. the unit in image 3)? It seems odd to take the power all the way to the Consumer Unit in the house and then cable it all the way back to the garage.
Apologies for some of the terminology. Any help and advice would be greatly appreciated. Thanks for your time.
1. Recently, during a kitchen refurb, double pole Mains Isolators were fitted in the Meter Enclosure - image 1. 25mm2 'tails' were fitted because the incoming power was upgraded to 100A.
2. Inside the garage, opposite the Meter Enclosure, the new 'tails' are connected to an old MEM Isolator Switch - image 2. That Isolator switch has a ceramic re-wirable fuse and that fuse is only rated at 60A.
3. The armoured cable from that MEM Isolator Switch goes to a new, metal, split load Consumer Unit inside the house - image 3. Naturally that Consumer Unit has another Mains Isolator Switch.
The oldest part of the installation is the MEM Isolator Switch. I am having trouble finding a ceramic MEM re-wirable 100A fuse and am not sure that is the best solution anyway. So my questions are:
1. Do I actually need the MEM Isolator Switch in the garage if the Meter Enclosure and the Consumer Unit both have isolator switches?
2. Could that MEM Isolator Switch just be removed OR should it simply be replaced with a 100A cartridge type fuse OR a suitable 100A breaker?
3. "One day" I will need to fit a Charging Unit for a car and the location of the MEM Isolator Switch would be a good point to take a cable through the garage wall to the outside for that charging point. So what would that arrangement look like? Would it be a very small 'Consumer Type' unit with an isolator switch plus a 32A 'take off' connection for the charging point?
4. OR should the power for that charging point come from the new 'Consumer Unit' inside the house (i.e. the unit in image 3)? It seems odd to take the power all the way to the Consumer Unit in the house and then cable it all the way back to the garage.
Apologies for some of the terminology. Any help and advice would be greatly appreciated. Thanks for your time.
