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RE: Other points

Posted by jea48 (A) on November 16, 2013 at 16:38:09

In Reply to: Other points posted by cdb on November 16, 2013 at 15:11:39:

CE is a "self-certifying" label. Yes, I agree to follow your guidlines/specs/RPs/whatever. No lab, no testing/inspecting of random samples, AFAIK. Not an OSHA approved NRTL (see linky).

In other words worthless.... The amp would never pass UL or CSA, jmho.

Emotiva seems confused and the bosses' comments don't help matters. I may have missed it, but I didn't see any power draw numbers in their spec column.

Just the 3500 watt by the IEC male connector on the back of the unit.
And this,
Power Supply:
3.3 kVA toroidal power transformer.
180,000 uF of storage capacitance.

Sure would like to know the size of the equipment Line protection fuse.

NEC Article 300 Table 310-15(B)(16)"
It's Art 310, Table 310-16 and above for conductor ampacities.

Sorry about that, don't know why I typed Article 300 and not 310. Especially when I got the Article, 310, correct in the Table.

For the 2011 NEC edition Table 310-16 is now Table 310.15(B)(16).
Page 70-154. A lot of code changes in the 2011 edition.

Personally, I'd do additional 20A/#12AWG circuits rather than try and bulk up a single one with fence-wire-stiff #10AWG.

I would tend to agree if he was installing at least a couple 20 amp circuits. Total connected load? Who knows.

Curious if the OP added into his length calc, up out of the panel and down to the recept location. Also if routing will affect the total length. You would be surprised how many newbie electrical estimators figure feeders lengths short. They forget to add the up and down, over and around.

Unless the residence is a monster McMansion with runs over say,125ft,(just to grab a fast number) and a monster HT setup, I wouldn't see Vd as much of an issue, for small-to-moderate sized 2CH systems. If so, at some rapid point a local sub-panel would be called for.

Well depends. Sometimes there is not a space for a sub panel. You have to consider resale. Some people don't care for the looks of a flush panel cover in a habitable room.

And then I remember reading places you do not want multiple dedicated branch circuits too short if your intension is to decouple the power supplies of audio equipment from one another. (Digital from analog)

My audio room's 2 dedicated circuits for the 2 channel system are over 75' from the panel. Both circuits are
#10-2 W/Grd NM-B cable. Preamp (tube), power amp (tube), and phono preamp SS, on one circuit, digital on the other. System is dead quiet.

Sometimes forgotten is the fact that stereo equipment has a specified operating voltage spread. It's not going to sound bad because you have 119VAC at the outlet, nor better if you have 121VAC.

Probably true if the voltage changes are somewhat steady state. But what if the changes in voltages are fluctuating fairly rapidly due to dynamic music played at a moderate to loud level. What does that do to the power supply of the amp and the power supplies of other equipment that is fed off the same circuit?

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