Ireland's service fuses can be one of a few different types depending on the era the service was installed.
Very large single diazed fuses sealed inside clear enclosure (50A, 63A, 80 A)
British style holders as shown in that NZ picture although they accept IEC cylindrical fuses either 63 or 80 A.
100A is also possible with both systems but is relatively rare.
If you want a 100A single phase supply ESB networks has to do a local infrastructural survey.
Distribution systems were generally designed to mostly supply 63A single phase services with the odd 80A.
Older systems would have been designed around 50A single phase services !
If you need more power 3-phase is generally relatively easily availble and is occasionally used in large storage heating installations.
Various fuse systems are used in the minipilars depending on their age. BS, IEC and VDE approved.
Also, the consumer unit must be fused seperately.
E.g. the main board might have a 63A diazed or neozed fuse and the board for the storage heating might have another 63A fuse.
