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bluemaddog
new panel for new home

we are building a new home the plans say the eletrical VA quote is 55600 it says i need a 300 amp panel can anyone advise how you work this it ie how do you arrive at the figure 300amps from just 55600va

NEC
Re: new panel for new home

Ohms law.

55,600VA (Watts) / 240Volts = 231.666 Amps. Post back all electical usage and SQ/FT and would be happy to recalc.

JLMCDANIEL
Re: new panel for new home

Simple answer 55600va/240 volts =55600/240 volts = 231 amps

If you actually have that much of a constant load you multiple the amps times 1.25 so 231 X 1.25= 288.75 amps The smallest panel avalible would then be a 300 amp panel and service.
Jack

NEC
Re: new panel for new home
JLMCDANIEL wrote:

Simple answer 55600va/240 volts =55600/240 volts = 231 amps

If you actually have that much of a constant load you multiple the amps times 1.25 so 231 X 1.25= 288.75 amps The smallest panel avalible would then be a 300 amp panel and service.
Jack

Naw. Wrong.

The first 10Kva is figured at 100% and the rest at 40% as far as service size per NEC.

A load calc needs to be done for the home. Really doubt a 300A service is required.

JLMCDANIEL
Re: new panel for new home
NEC wrote:

Naw. Wrong.

The first 10Kva is figured at 100% and the rest at 40% as far as service size per NEC.

A load calc needs to be done for the home. Really doubt a 300A service is required.

I said "If you actually have that much of a constant load " perhaps I wasn't clear enough, I guess I should have added "unlikely". But I do agree that a load calc needs to be done and doubt a 300 amp panel would be required.
Jack

NEC
Re: new panel for new home
JLMCDANIEL wrote:

I said "If you actually have that much of a constant load " perhaps I wasn't clear enough, I guess I should have added "unlikely". But I do agree that a load calc needs to be done and doubt a 300 amp panel would be required.
Jack

If 55,600Va is a constant load, these folks need a serious lifestyle change.

JLMCDANIEL
Re: new panel for new home
NEC wrote:

If 55,600Va is a constant load, these folks need a serious lifestyle change.

Maybe they make a lot of money. Could be they are all plumbers.:D
Jack

NEC
Re: new panel for new home
JLMCDANIEL wrote:

Maybe they make a lot of money. Could be they are all plumbers.:D
Jack

Well, they are not electrical contractors for damn sure.

Ernie_Fergler
Re: new panel for new home
NEC wrote:

If 55,600Va is a constant load, these folks need a serious lifestyle change.

Just might be Al Gore's new cool abode.......:cool:

JLMCDANIEL
Re: new panel for new home

Perhaps a lot of grow lights?
Jack

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