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Ask The Trades › DIY Forum › Electrical Questions › working out maximum demand

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working out maximum demand (Read 13628 times)

Y3 GDPR opt-out	Re: working out maximum demand Reply #17 - Jun 3^rd, 2009, 10:57pm Lectrician wrote on Jan 24^th, 2009, 8:22am: This is what makes me think the agreed capacity / maximum demand is not based on the fuse rating. What do you mean by this? Is there any other way its based?
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Lectrician

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Re: working out maximum demand
Reply #18 - Jun 4^th, 2009, 6:34am

Quote:

Lectrician wrote on Jan 24^th, 2009, 8:22am:

This is what makes me think the agreed capacity / maximum demand is not based on the fuse rating.

What do you mean by this? Is there any other way its based?

If you quote me in full, it makes sence? Not sure what you do not get?
He sais the tranny is feeding his 100amp TP head and a primary school. The tranny is not sized to support a 100amp head. You do sometimes see a miss match of fusing and agreed capacity.

Quote:

A 50kVa tranny is only going to be able to supply 70 ish amps per phase. This is what makes me think the agreed capacity / maximum demand is not based on the fuse rating.

« Last Edit: Jun 4^th, 2009, 6:39am by Lectrician »

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Goodsparks GDPR opt-out Total Thanks: 109 For This Post: 0	Re: working out maximum demand Reply #19 - Jun 4^th, 2009, 6:34pm Quote: You do sometimes see a miss match of fusing and agreed capacity. Its quite common. We've got an authorised service capacity of 800kva from a 1MVA sub on an 11kv ring with only capacity to supply upto 800 Kva. Incoming ACB is 1600a.
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