what i've found out is that the equipment dealer has purchased the 85A per phase oven for my customers bakery with the understanding that her unit had a 150A per phase supply, which turns out to be just 100A when i came to inspect it! A 63A oven was originally specified however this larger oven was what was available to the dealer. So the matter now is deciding whether the 100A supply can cope with the de-rated now 63A oven along with the rest of the installation.
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