[Greg.Ca]

My current system is 5.2 Currently advancing toward 5.2.4 Currently Dolby 'Almost' hoping to be soon Dolby 'Atmos'.

My NAD processor is eligible for a additional card that will extract four additional height channels. I bought the $600 card and are awaiting installation. I have a ROTEL 5 channel amplifier that has worked perfectly for years. It's connected by 5 RCA cables from my NAD processor. This Rotel is actually housed in my basement as it's always cooler in my basement and I never wanted to hear the additional fans that I but on top of it. (4K blu-ray player is also in the basement connected by fiber based HDMI cables)

While shopping for an additional amp for the height channels, I discovered that these external amps use a LOT of electricity. The current amp I am shopping for is an Outlaw 5 channel amp and I discovered that it lists it's electrical consumption at 1500 watts!!!!! WOW!!!!

http://outlawaudio.com/outlaw/docs/5000x_OM.pdf

My current Rotel RMB-1075 is rated at 800 watts power consumption.

https://www.rotel.com/sites/default/files/product/infosheets/RMB1075_InfoSheet_LR.pdf

I'm afraid that I may blow a standard 15 amp circuit breaker when both amps are hooked up to the same power source. HOW DO I OVERCOME THIS!!!!!!! If I run both amps together on the same circuit, I will pop the circuit breaker. I also have the NAD processor and the TV as well as one subwoofer all on the same AC circuit to prevent ground loops and hum. Surely there are a loot of guys that run two separate power amps. How do you manage power consumption?? This will become an issue soon as soon as I install the new power amp. I can already see the AC circuit breaker popping the first night after I add the 2nd power amp.

Thanks --Greg--

 

[GregLett]

Somehow I screwed up my previous post.

If you have 12 gauge wire you can add a 20A breaker.

You may be okay if you don't crank the volume but you are close.
15A breaker 1800W
20A breaker 2400W

 

[hopefullguy]

i use a rmb1075 and i cant see why you need a fan unless it is in a closed in space. mine gets barely warm but is in an open space.

there are calculators you can convert your watts use to amps etc to find out if your line can handle things.

"The domestic mains power supply in Australia is 240V AC, 50Hz. Standard 3-pin earthed power outlets are rated at 10Amps and are usually switched" so in my case i need to add up all the items in my HT room and check what lines they are connected to. from basic figures i need to up grade my HT room to 20 amp lines at the power board.

in the states yours is 120V i think

remember your gear wont be using peak power at the same time but better to have too much capacity than risk a problem imo

 

[bonscott]

My current system is 5.2 Currently advancing toward 5.2.4 Currently Dolby 'Almost' hoping to be soon Dolby 'Atmos'.

My NAD processor is eligible for a additional card that will extract four additional height channels. I bought the $600 card and are awaiting installation. I have a ROTEL 5 channel amplifier that has worked perfectly for years. It's connected by 5 RCA cables from my NAD processor. This Rotel is actually housed in my basement as it's always cooler in my basement and I never wanted to hear the additional fans that I but on top of it. (4K blu-ray player is also in the basement connected by fiber based HDMI cables)

While shopping for an additional amp for the height channels, I discovered that these external amps use a LOT of electricity. The current amp I am shopping for is an Outlaw 5 channel amp and I discovered that it lists it's electrical consumption at 1500 watts!!!!! WOW!!!!

http://outlawaudio.com/outlaw/docs/5000x_OM.pdf

My current Rotel RMB-1075 is rated at 800 watts power consumption.

https://www.rotel.com/sites/default/files/product/infosheets/RMB1075_InfoSheet_LR.pdf

I'm afraid that I may blow a standard 15 amp circuit breaker when both amps are hooked up to the same power source. HOW DO I OVERCOME THIS!!!!!!! If I run both amps together on the same circuit, I will pop the circuit breaker. I also have the NAD processor and the TV as well as one subwoofer all on the same AC circuit to prevent ground loops and hum. Surely there are a loot of guys that run two separate power amps. How do you manage power consumption?? This will become an issue soon as soon as I install the new power amp. I can already see the AC circuit breaker popping the first night after I add the 2nd power amp.

Thanks --Greg--

. NAD M 28. Class D 7 channel Amp.

 

[Audioguy1]

You need a dedicated line. I have a 12 gauge 20 amp feeding my Parasound 5250 only. All other gear(except subs) has its own dedicated line as well. When the amp starts to starve at high levels, distortion goes up exponentially, then you blow your drivers(usually the highs go first). The power starve will happen long before your breaker trips. It's a problem alright.

Best!

 

[DonH50]

Chances are you are using one or two orders of magnitude less than (1/10th to 1/100th) full power the vast majority of the time. Look at something like the SPL calculator linked below to see how much power you are actually using. Also, musical peaks are brief, and a circuit breaker will sustain a significant overload for a small amount of time. Many folk have systems that exceed the wall rating by 50% to 100% or more and yet have never had a problem simply because the average power is a tenth or less (probably much less) the maximum rating on the component's sticker.

_Peak SPL Calculator

 

[coolwi]

Buy a Kill a Watt meter, and measure the power and current usage of your current setup. It's likely way below the 800 watt number. It would give you a better sense of how much power each amplifier would consume at your typical usage.

However, these amps can cause power surge during powering on, so you might want to power them on one at a time.