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Look before you calculate: the demand against the supply fuseCan you calculate a board you haven't looked at?
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| Sum of protective devices | 130 A — over a 100 A fuse |
| Maximum demand | 71.2 A — comfortably inside 100 A, and inside 80 A too |
DNO cut-out fuses are typically 80 A or 100 A. If the demand will not fit, the options are to reduce it, to refuse the work, or to ask the DNO for a second phase or a three-phase supply — which is possible and expensive.
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