On May 16, 8:16*pm, bilfre wrote:
On 2013-05-16 16:17:16 +0000, said:

That voltage drop is excessive. *The National Electric Code specifies
a drop of no more than 5% from the breaker box to the furthest outlet
at full load (Note that a 1500 watt load is about 85% of full load).

Checking the drop at various points from the breaker box to the outlet
supplying the computer is a good idea. *The faq at
http://www.psihq.com/iread/faqvolt.htmalso has suggestions.

PlainBill

Hi PlainBill,

Thanks for the response and the link. * I will go back to my friends
and look for the problem. *I suspect there is a loose connection at one
end or the other since it seems to be intermittent. *Checked my own
wiring with same load and only had a 4 volt drop.

billfre

Your own experience is more typical. 10 V is excessive. Aluminum
wiring??? I would be careful not to keep the load on continuously
just in case there is some heating somewhere in the walls. P = IV =
20 x 10 = 200Watts, probably not enuf to start a fire but just in
case!!!